JPH0837731A - Bus protective relay - Google Patents

Abstract

PURPOSE:To enable a bus protective relay to perform normal monitoring when a circuit breaker is inspected. CONSTITUTION:An input means 1A receives the opening/closing conditions of the auxiliary contacts of a circuit breaker which are opened/closed in accordance with the opening/closing of the main contact of the breaker and a deciding means 5 fetches the opening/closing conditions of the auxiliary contacts received by the means 1A to a means 2 which combines the opening/closing conditions of the auxiliary contacts of a disconnecting switch which are opened/ closed in accordance with the opening/closing of the main contact of the switch. When, for example, the main contact of the disconnecting switch is set to an intermediate position and the auxiliary contacts (a) and (b) of the switch are opened, both input sections 10a and 10b output L-signals and an exclusive-OR gate 21 becomes invalid and outputs an L-signal. Therefore, the output of an inverter gate 61 becomes an H-signal. Since the circuit breaker is turned off, an input section 14 outputs an L-signal and an AND gate 51 outputs an L-signal. Therefore, an output means 3 does not output any abnormality detecting signal and erroneous monitoring does not occur.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は電力系統の断路器接点
情報を監視する機能を備えた母線保護継電装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a busbar protection relay device having a function of monitoring disconnector contact information of a power system.

【０００２】[0002]

【従来の技術】図５は電力系統の標準二重母線方式を例
とする一般的な母線保護継電装置を示す回路図である。
この図５において、１０１は甲母線、１０２は乙母線、
１０３は甲母線１０１と乙母線１０２とを接続するため
の母線連絡しゃ断器、１０４は送電線などの電源側母線
を構成するＡ端回線、１０５は配電線などの負荷側母線
を構成するＢ端回線、１０６は上記とは別の配電線など
の負荷側母線を構成するＣ端回線、１０７はＡ端回線１
０４を甲母線１０１に接続するための母線選択断路器、
１０８はＡ端回線１０４を乙母線１０２に接続するため
の母線選択断路器、１０９はＢ端回線１０５を甲母線１
０１に接続するための母線選択断路器、１１０はＢ端回
線１０５を乙母線１０２に接続するための母線選択断路
器、１１１はＣ端回線１０６を甲母線１０１に接続する
ための母線選択断路器、１１２はＣ端回線１０６を乙母
線１０２に接続するための母線選択断路器、１１３はＡ
端回線１０４に設けられた回線しゃ断器、１１４はＢ端
回線１０５に設けられた回線しゃ断器、１１５はＣ端回
線１０６に設けられた回線しゃ断器、１１６はＡ端回線
１０４に設けられた計器用変流器、１１７はＢ端回線１
０５に設けられた計器用変流器、１１８はＣ端回線１０
６に設けられた計器用変流器、１１９は甲母線保護継電
器、１２０は乙母線保護継電器である。2. Description of the Related Art FIG. 5 is a circuit diagram showing a general busbar protection relay device, which exemplifies a standard double busbar system of an electric power system.
In FIG. 5, 101 is the Kobus, 102 is the Obus,
Reference numeral 103 is a busbar breaker for connecting the upper busbar 101 and the second busbar 102, 104 is an A-end line that constitutes a power-supply-side busbar such as a transmission line, and 105 is a B-end that constitutes a load-side busbar such as a distribution line. A line, 106 is a C-end line that constitutes a load-side bus such as a distribution line different from the above, and 107 is an A-end line 1
Busbar disconnecting switch for connecting 04 to Kobusen 101,
Reference numeral 108 is a busbar selection disconnecting switch for connecting the A-end line 104 to the O-bus line 102, and 109 is the B-end line 105.
A bus line selection disconnector for connecting to 01, a 110 bus line selection disconnector for connecting the B-end line 105 to the O-bus line 102, and a 111 line for selecting the C-terminal line 106 to the upper bus line 101 , 112 is a bus selection disconnector for connecting the C-end line 106 to the O-bus 102, and 113 is A
A circuit breaker provided in the end line 104, 114 a line breaker provided in the B end line 105, 115 a line breaker provided in the C end line 106, and 116 an instrument provided in the A end line 104 Current transformer 117 is B end line 1
05 current transformer for instrument, 118 is C terminal line 10
6 is a current transformer for measuring instruments, 119 is an A-bus protective relay, and 120 is an O-bus protective relay.

【０００３】この図５に示す母線保護継電装置の動作を
説明する。図５では標準二重母線方式を例示してあるの
で、母線連絡しゃ断器１０３を閉成した上で、母線選択
断路器１０７〜１１２を切り換えることによって、無停
電でＡ端・Ｂ端・Ｃ端回線１０４〜１０６などの複数の
回線を甲・乙母線１０１，１０２のいずれかに接続する
母線切り換えが行える。例えば、図５に「入」、「切」
の文字を付記したように、母線選択断路器１０７の主接
点が「入（閉成に相当する）」、母線選択断路器１０８
の主接点が「切（開成に相当する）」、母線選択断路器
１０９の主接点が「切」、母線選択断路器１１０の主接
点が「入」、母線選択断路器１１１の主接点が「入」、
母線選択断路器１１２の主接点が「切」になっている場
合は、Ａ端・Ｃ端回線１０４，１０６が甲母線１０１に
接続され、これらＡ端・Ｂ端回線１０４，１０６におけ
る計器用変流器１１６，１１８の二次側が各相ごとに全
部並列に接続され、これら計器用変流器１１６，１１８
の出力が甲母線保護継電器１１９に導入される一方、Ｂ
端回線１０５が乙母線１０２に接続され、このＣ端回線
１０６における計器用変流器１１７の二次側が各相ごと
に並列に接続され、この計器用変流器１１７の出力が乙
母線保護継電器１２０に導入される。The operation of the busbar protective relay device shown in FIG. 5 will be described. Since the standard double bus system is illustrated in FIG. 5, after closing the bus-bar breaker 103 and switching the bus-selection disconnectors 107-112, uninterrupted A-end / B-end / C-end. Bus lines can be switched to connect a plurality of lines such as the lines 104 to 106 to either the instep or the O-bus line 101 or 102. For example, in Figure 5, "On", "Off"
As indicated by the additional character, the main contact of the busbar selection disconnector 107 is “ON (corresponding to closing)”, and the busbar selection disconnector 108
, The main contact of the bus bar selection disconnecting switch 109 is “OFF”, the main contact of the bus bar selecting disconnecting switch 110 is “ON”, the main contact of the bus bar selecting disconnecting switch 111 is “ On ",
When the main contact of the busbar selection disconnecting switch 112 is "OFF", the A-end / C-end lines 104 and 106 are connected to the instep busbar 101, and the instrument transformers at these A-end / B-end lines 104 and 106 are connected. The secondary sides of the current transformers 116 and 118 are all connected in parallel for each phase, and these current transformers 116 and 118 for meters are used.
The output of B is introduced to the protection relay 119 of Kobusen, while B
The end line 105 is connected to the O-bus line 102, the secondary side of the current transformer 117 for the instrument in the C-end line 106 is connected in parallel for each phase, and the output of the current transformer 117 for the instrument is the O-bus protective relay. Introduced at 120.

【０００４】図６は上記母線保護継電装置における一般
的な断路器接点受信回路を示す回路図である。この図６
では説明を簡明にすることから図５に示す甲母線保護継
電器１１９におけるＡ端回線１０４の２つの母線選択断
路器１０７，１０８に関する断路器接点受信回路を例と
して図示してある。この図６において、１２１は制御高
電位電源線、１２２は制御低電位電源線であって、この
制御低電位電源線１２２の電位は接地電位に設定される
のが普通である。１２３は母線選択断路器１０７の主接
点開閉情報を受信する入力部であって、これは断路器補
助ａ接点１２３ａ−１と断路器補助ｂ接点１２３ｂ−１
とを有し、断路器補助ａ接点１２３ａ−１は母線選択断
路器１０７の主接点の開閉（入切に相当する）と同じに
開閉し、断路器補助ｂ接点１２３ｂ−１は母線選択断路
器１０７の主接点の開閉と逆に開閉する。これら断路器
補助ａ接点１２３ａ−１の固定接点部の一方と断路器補
助ｂ接点１２３ｂ−１の固定接点部の一方とが制御高電
位電源線１２１に並列に接続されている。１２４は入力
部１２３で受け取った主接点開閉情報を図８に示す断路
器接点情報監視回路に送信する出力部であって、これは
ホトカプラ１２４ａ−１，１２４ｂ−１を有する。ホト
カプラ１２４ａ−１の動作入力端は断路器補助ａ接点１
２３ａ−１の固定接点部の他方と制御低電位電源線１２
２とに直列に接続され、ホトカプラ１２４ｂ−１の動作
入力端は断路器補助ｂ接点１２３ｂ−１の固定接点部の
他方と制御低電位電源線１２２とに直列に接続されてい
る。よって、ホトカプラ１２４ａ−１の出力端１２４ａ
−２には、断路器補助ａ接点１２３ａ−１が開成したま
まのとき低電位であるＬ信号が出力され、断路器補助ａ
接点１２３ａ−１が閉成したままのとき高電位であるＨ
信号が出力される。ホトカプラ１２４ｂ−１の出力端１
２４ｂ−２には、断路器補助ｂ接点１２３ｂ−１が閉成
したままのとき高電位であるＨ信号が出力され、断路器
補助ｂ接点１２３ｂ−１が開成したままのとき低電位で
あるＬ信号が出力される。１２５は母線選択断路器１０
８の主接点開閉情報を受信する入力部であって、これは
断路器補助ａ接点１２５ａ−１と断路器補助ｂ接点１２
５ｂ−１とを有し、断路器補助ａ接点１２５ａ−１は母
線選択断路器１０８の主接点の開閉と同じに開閉し、断
路器補助ａ接点１２５ｂ−１は同母線選択断路器１０８
の主接点の開閉と逆に開閉する。これら断路器補助ａ接
点１２５ａ−１の固定接点部の一方と断路器補助ｂ接点
１２５ｂ−１の固定接点部の一方とが制御高電位電源線
１２１に並列に接続されている。１２６は入力部１２５
で受け取った母線選択断路器１０８の主接点開閉情報を
図８に示す断路器接点情報監視回路に送信する出力部で
あって、これはホトカプラ１２６ａ−１，１２６ｂ−１
を有する。ホトカプラ１２６ａ−１の動作入力端は断路
器補助ａ接点１２５ａ−１の固定接点部の他方と制御低
電位電源線１２２とに直列に接続され、ホトカプラ１２
６ｂ−１の動作入力端は断路器補助ｂ接点１２５ｂ−１
の固定接点部の他方と制御低電位電源線１２２とに直列
に接続されている。よって、ホトカプラ１２６ａ−１の
出力端１２６ａ−２には、断路器補助ａ接点１２５ａ−
１が開成したままのとき低電位であるＬ信号が出力さ
れ、断路器補助ａ接点１２５ａ−１が閉成したままのと
き高電位であるＨ信号が出力される。ホトカプラ１２６
ｂ−１の出力端１２６ｂ−２には、断路器補助ｂ接点１
２５ｂ−１が閉成したままのとき高電位であるＨ信号が
出力され、断路器補助ｂ接点１２５ｂ−１が開成したま
まのとき低電位であるＬ信号が出力される。FIG. 6 is a circuit diagram showing a general disconnector contact receiving circuit in the above busbar protective relay device. This Figure 6
In order to simplify the explanation, a disconnector contact receiving circuit for the two busbar selective disconnectors 107 and 108 of the A-end line 104 in the upper busbar protective relay 119 shown in FIG. 5 is shown as an example. In FIG. 6, 121 is a control high potential power supply line, 122 is a control low potential power supply line, and the potential of this control low potential power supply line 122 is usually set to the ground potential. Reference numeral 123 denotes an input unit for receiving main contact opening / closing information of the busbar selection disconnector 107, which is a disconnector auxiliary a contact 123a-1 and a disconnector auxiliary b contact 123b-1.
And the disconnector auxiliary a-contact 123a-1 is opened / closed in the same manner as the opening / closing (corresponding to on / off) of the main contact of the busbar selection disconnector 107, and the disconnector auxiliary b-contact 123b-1 is a busbar selection disconnector. It opens and closes in reverse to the opening and closing of the main contact of 107. One of the fixed contact portions of the disconnector auxiliary a-contact 123a-1 and one of the fixed contact portions of the disconnector auxiliary b-contact 123b-1 are connected in parallel to the control high-potential power line 121. Reference numeral 124 denotes an output unit for transmitting the main contact opening / closing information received by the input unit 123 to the disconnector contact information monitoring circuit shown in FIG. 8, which has photocouplers 124a-1 and 124b-1. The operation input end of the photocoupler 124a-1 is a disconnector auxiliary a-contact 1
23a-1 on the other side of the fixed contact portion and the control low potential power line 12
2 is connected in series, and the operation input end of the photocoupler 124b-1 is connected in series to the other fixed contact portion of the disconnector auxiliary b contact 123b-1 and the control low potential power supply line 122. Therefore, the output end 124a of the photocoupler 124a-1
-2, the L signal which is a low potential is output when the disconnector auxiliary a contact 123a-1 is still open, and the disconnector auxiliary a
H, which is a high potential when the contact 123a-1 remains closed
The signal is output. Output end 1 of photocoupler 124b-1
An H signal having a high potential is output to 24b-2 when the disconnector auxiliary b-contact 123b-1 remains closed, and a low potential L when the disconnector auxiliary b-contact 123b-1 remains open. The signal is output. 125 is a busbar selection disconnector 10
8 is an input unit for receiving main contact opening / closing information, which is a disconnector auxiliary a-contact 125a-1 and a disconnector auxiliary b-contact 12
5b-1 and the disconnector auxiliary a-contact 125a-1 is opened and closed in the same manner as the main contact of the busbar selection disconnector 108, and the disconnector auxiliary a-contact 125b-1 is connected to the same busbar selection disconnector 108.
Open and close the reverse of the main contact of. One of the fixed contact portions of the disconnector auxiliary a-contact 125a-1 and one of the fixed contact portions of the disconnector auxiliary b-contact 125b-1 are connected in parallel to the control high-potential power line 121. 126 is an input unit 125
It is an output unit for transmitting the main contact opening / closing information of the bus bar selection disconnecting switch 108 received in step 1 to the disconnecting switch contact information monitoring circuit shown in FIG. 8, which is photo couplers 126a-1 and 126b-1.
Have. The operation input terminal of the photocoupler 126a-1 is connected in series to the other of the fixed contact portions of the disconnector auxiliary a-contact 125a-1 and the control low potential power supply line 122.
The operation input end of 6b-1 is a disconnector auxiliary b contact 125b-1.
Is connected in series to the other of the fixed contact portions and the control low potential power supply line 122. Therefore, the output end 126a-2 of the photocoupler 126a-1 is connected to the auxiliary disconnector auxiliary a contact 125a-.
When 1 remains open, an L signal of low potential is output, and when the disconnector auxiliary a-contact 125a-1 remains closed, an H signal of high potential is output. Photo coupler 126
At the output end 126b-2 of b-1, a disconnector auxiliary b contact 1
A high potential H signal is output when 25b-1 remains closed, and a low potential L signal is output when the disconnector auxiliary b contact 125b-1 remains open.

【０００５】この図６に示す断路器接続受信回路の動作
を説明する。この図６において、例えば、図５の母線選
択断路器１０７の主接点が閉成となり、図５の母線選択
断路器１０８の主接点が開成となり、図５のＡ端回線１
０４が甲母線１０１に接続された状態の場合は、母線選
択断路器１０７に対応する断路器補助ａ接点１２３ａ−
１が図６の図示状態とは逆の状態に閉成し、同母線選択
断路器１０７に対応する断路器補助ｂ接点１２３ｂ−１
が図６の図示状態とは逆の状態に開成し、母線選択断路
器１０８に対応する断路器補助ａ接点１２５ａ−１が図
６の図示状態と同じ状態に開成し、同母線選択断路器１
０８に対応する断路器補助ｂ接点１２５ｂ−１が図６の
図示状態と同じ状態に閉成したままとなる。結果とし
て、制御電流が制御高電位電源線１２１から断路器補助
ａ接点１２３ａ−１とこれに接続したホトカプラ１２４
ａ−１とを経由して制御低電位電源線１２２に流れ、こ
のホトカプラ１２４ａ−１の出力端１２４ａ−２には断
路器補助ａ接点１２３ａ−１の閉成を受信したことを表
す正転信号として高電位であるＨ信号が出力される一
方、断路器補助ｂ接点１２３ｂ−１に接続されたホトカ
プラ１２４ｂ−１には制御電流が流れず、同ホトカプラ
１２４ｂ−１の出力端１２４ｂ−２には断路器補助ｂ接
点１２３ｂ−１の開成を受信したことを表す反転信号と
して低電位であるＬ信号が出力される。また、断路器補
助ａ接点１２５ａ−１に接続したホトカプラ１２６ａ−
１には制御電流が流れず、同ホトカプラ１２６ａ−１の
出力端１２６ａ−２には断路器補助ａ接点１２５ａ−１
の開成を受信したことを表す反転信号として低電位であ
るＬ信号が出力される一方、制御電流が制御高電位電源
線１２１から断路器補助ｂ接点１２５ｂ−１とこれに接
続したホトカプラ１２６ｂ−１とを経由して制御低電位
電源線１２２に流れ、このホトカプラ１２６ｂ−１の出
力端１２６ｂ−２には断路器補助ｂ接点１２５ｂ−１の
閉成を受信したことを表す正転信号として高電位である
Ｈ信号が出力される。The operation of the disconnector connection receiving circuit shown in FIG. 6 will be described. In FIG. 6, for example, the main contact of the bus bar selection disconnecting switch 107 shown in FIG. 5 is closed, and the main contact of the bus bar selecting disconnection switch 108 shown in FIG. 5 is opened.
When 04 is connected to the upper busbar 101, a disconnector auxiliary a contact 123a-corresponding to the busbar selection disconnector 107 is connected.
1 is closed in a state opposite to the state shown in FIG. 6, and a disconnector auxiliary b contact 123b-1 corresponding to the same bus line selection disconnector 107.
6 is opened in a state opposite to that shown in FIG. 6, and the disconnector auxiliary a contact 125a-1 corresponding to the busbar selection disconnector 108 is opened in the same state as that shown in FIG.
The disconnector auxiliary b contact 125b-1 corresponding to 08 remains closed in the same state as that shown in FIG. As a result, the control current flows from the control high-potential power line 121 to the disconnector auxiliary a-contact 123a-1 and the photocoupler 124 connected thereto.
A normal signal indicating that the closing of the disconnector auxiliary a-contact 123a-1 is received at the output end 124a-2 of the photocoupler 124a-1 via the control low potential power supply line 122. While the H signal having a high potential is output as, the control current does not flow to the photocoupler 124b-1 connected to the disconnector auxiliary b contact 123b-1, and the output end 124b-2 of the photocoupler 124b-1 does not flow. An L signal, which is a low potential, is output as an inversion signal indicating that the opening of the disconnector auxiliary b contact 123b-1 is received. Also, a photo coupler 126a-connected to the disconnector auxiliary a-contact 125a-1.
1, a control current does not flow, and the photocoupler 126a-1 has an output end 126a-2, which is connected to the disconnector auxiliary a-contact 125a-1.
While the L signal, which is a low potential, is output as an inversion signal indicating that the open state has been received, the control current flows from the control high potential power supply line 121 to the disconnector auxiliary b contact 125b-1 and the photocoupler 126b-1 connected thereto. To the control low-potential power supply line 122, and the output end 126b-2 of this photocoupler 126b-1 has a high potential as a normal signal indicating that the closing of the disconnector auxiliary b-contact 125b-1 is received. H signal is output.

【０００６】図７は上記母線保護継電装置における一般
的なしゃ断器接点受信回路を示す回路図である。この図
７では説明を簡明にすることから図５に示すＡ端回線１
０４に設けられた回線しゃ断器１１３および図５では図
示を省略したＮ端回線に設けられる図外の回線しゃ断器
に関するしゃ断器接点受信回路を例として図示してあ
る。図７における点線は図５に示すＢ端・Ｃ端回線１０
５，１０６に設けられた回線しゃ断器１１４，１１５に
関するしゃ断器接点受信回路構成要素としての入力部と
出力部との図示が省略されたことを表す。この図７にお
いて、１２７は制御高電位電源線、１２８は制御低電位
電源線であって、この制御低電位電源線１２８の電位は
接地電位に設定されるのが普通である。１２９は回線し
ゃ断器１１３の主接点開閉情報を受信する入力部であっ
て、これはしゃ断器補助ａ接点１２９ａを有し、しゃ断
器補助ａ接点１２９ａは回線しゃ断器１１３の主接点の
開閉（入切に相当する）と同じに開閉する。このしゃ断
器補助ａ接点１２９ａの固定接点部の一方が制御高電位
電源線１２１に接続されている。１３０は入力部１２９
で受け取った主接点開閉情報を図外の表示盤に送信する
出力部であって、これはホトカプラ１３０ａ−１を有す
る。ホトカプラ１３０ａ−１の動作入力端はしゃ断器補
助ａ接点１２９ａの固定接点部の他方と制御低電位電源
線１２８とに直列に接続されている。よって、ホトカプ
ラ１３０ａ−１の出力端１３０ａ−２には、しゃ断器補
助ａ接点１２９ａが開成したままのとき低電位であるＬ
信号が出力され、しゃ断器補助ａ接点１２９ａが閉成し
たままのとき高電位であるＨ信号が出力される。１３１
は上記図外のＮ端回線に設けられる回線しゃ断器の主接
点開閉情報を受信する入力部であって、これはしゃ断器
補助ａ接点１３１ａを有し、しゃ断器補助ａ接点１３１
ａは回線しゃ断器の主接点の開閉と同じに開閉する。こ
のしゃ断器補助ａ接点１３１ａの固定接点部の一方が制
御高電位電源線１２１に接続されている。１３２は入力
部１３１で受け取った主接点開閉情報を図外の表示盤に
送信する出力部であって、これはホトカプラ１３２ａ−
１を有する。ホトカプラ１３２ａ−１の動作入力端はし
ゃ断器補助ａ接点１３１ａの固定接点部の他方と制御低
電位電源線１２８とに直列に接続されている。よって、
ホトカプラ１３２ａ−１の出力端１３２ａ−２には、し
ゃ断器補助ａ接点１３１ａが開成したままのとき低電位
であるＬ信号が出力され、しゃ断器補助ａ接点１３１ａ
が閉成したままのとき高電位であるＨ信号が出力され
る。FIG. 7 is a circuit diagram showing a general breaker contact receiving circuit in the above-mentioned busbar protective relay device. In FIG. 7, since the explanation is simplified, the A-end line 1 shown in FIG.
The circuit breaker 113 provided at 04 and the circuit breaker contact receiving circuit related to the circuit breaker (not shown) provided at the N-end circuit (not shown in FIG. 5) are illustrated as examples. The dotted line in FIG. 7 is the B-end / C-end line 10 shown in FIG.
5, the illustration of the input section and the output section as circuit breaker contact receiving circuit constituent elements relating to the circuit breakers 114 and 115 provided in 5, 106 is omitted. In FIG. 7, 127 is a control high potential power supply line, 128 is a control low potential power supply line, and the potential of this control low potential power supply line 128 is usually set to the ground potential. Reference numeral 129 denotes an input unit for receiving main contact opening / closing information of the circuit breaker 113, which has a circuit breaker auxiliary a contact 129a, and the circuit breaker auxiliary a contact 129a opens / closes (turns on / off) the main contact of the circuit breaker 113. Corresponding to the cut) open and close the same. One of the fixed contact portions of the circuit breaker auxiliary a-contact 129a is connected to the control high potential power supply line 121. 130 is an input unit 129
It is an output unit for transmitting the main contact opening / closing information received in (1) to a display panel (not shown), which has a photocoupler 130a-1. The operation input terminal of the photocoupler 130a-1 is connected in series to the other of the fixed contact portions of the circuit breaker auxiliary a-contact 129a and the control low potential power supply line 128. Therefore, the output terminal 130a-2 of the photocoupler 130a-1 has a low potential L when the breaker auxiliary a-contact 129a remains open.
A signal is output, and when the circuit breaker auxiliary a contact 129a remains closed, an H signal of high potential is output. 131
Is an input unit for receiving the main contact opening / closing information of the circuit breaker provided in the N-end line (not shown), which has a circuit breaker auxiliary a contact 131a.
a opens and closes in the same way as the main contact of the circuit breaker. One of the fixed contact portions of the circuit breaker auxiliary a-contact 131a is connected to the control high potential power supply line 121. Reference numeral 132 is an output unit for transmitting the main contact opening / closing information received by the input unit 131 to a display panel (not shown).
One. The operation input terminal of the photocoupler 132a-1 is connected in series to the other fixed contact portion of the circuit breaker auxiliary a contact 131a and the control low potential power supply line 128. Therefore,
At the output end 132a-2 of the photocoupler 132a-1, an L signal having a low potential is output when the circuit breaker auxiliary a contact 131a remains open, and the circuit breaker auxiliary a contact 131a is output.
When is closed, the H signal, which is a high potential, is output.

【０００７】図８は上記母線保護継電装置における従来
の断路器接点情報監視回路を示す回路図である。この図
８では説明を簡明にすることから図５に示すＡ端回線１
０４の２つの母線選択断路器１０７，１０８およびＣ端
回線１０６の２つの母線選択断路器１１１，１１２に関
する断路器接点情報監視回路を例として図示してある。
図８における点線は図５に示す母線選択断路器１０９，
１１０に関する断路器接点情報監視回路構成要素として
の入力部とイクスクルーシブオアゲート、インバータゲ
ート、オアゲートの図示を省略したことを表す。この図
８において、１は入力手段であって、これは図６に示す
断路器接続受信回路の出力を個別に受信する複数の入力
部１０ａ，１０ｂ，１１ａ，１１ｂ，１２ａ，１２ｂ，
１３ａ，１３ｂを有する。入力部１０ａは図６に示すホ
トカプラ１２４ａ−１の出力端１２４ａ−２からの出力
を受信し、入力部１０ｂは図６に示すホトカプラ１２４
ｂ−１の出力端１２４ｂ−２からの出力を受信し、入力
部１１ａは図６に示すホトカプラ１２６ａ−１の出力端
１２６ａ−２からの出力を受信し、入力部１１ｂは図６
に示すホトカプラ１２６ｂ−１の出力端１２６ｂ−２か
らの出力を受信し、入力部１２ａは図５に示す母線選択
断路器１１１に対応する断路器補助ａ接点の開閉条件に
応じるホトカプラからの出力を受信し、入力部１２ｂは
図５に示す母線選択断路器１１１に対応する断路器補助
ｂ接点の開閉条件に応じるホトカプラからの出力を受信
し、入力部１３ａは図５に示す母線選択断路器１１２に
対応する断路器補助ａ接点の開閉条件に応じるホトカプ
ラからの出力を受信し、入力部１３ｂは図５に示す母線
選択断路器１１２に対応する断路器補助ｂ接点の開閉条
件に応じるホトカプラからの出力を受信する。２は組み
合わせ手段であって、これは入力部１０ａ，１０ｂの出
力を入力するイクスクルーシブオアゲート２１と、入力
部１１ａ，１１ｂの出力を入力するイクスクルーシブオ
アゲート２２と、入力部１２ａ，１２ｂの出力を入力す
るイクスクルーシブオアゲート２３と、入力部１３ａ，
１３ｂの出力を入力するイクスクルーシブオアゲート２
４とを有する。３は出力手段であって、これは複数のオ
アゲート３１，３２と、これらオアゲートの出力を入力
とする限時機能を有するタイマ３３とを備える。オアゲ
ート３１はイクスクルーシブオアゲート２１，２２の出
力をインバータゲート６１，６２を個別に介して入力
し、オアゲート３２はイクスクルーシブオアゲート２
３，２４の出力をインバータゲート６３，６４を個別に
介して入力する。４はタイマ３３から出力される異常検
知信号で発光や音または音声などの警報を発生する警報
手段である。FIG. 8 is a circuit diagram showing a conventional disconnector contact information monitoring circuit in the above-mentioned busbar protection relay device. In order to simplify the explanation in FIG. 8, the A-end line 1 shown in FIG.
The disconnector contact information monitoring circuit for the two busbar selection disconnectors 107, 108 of No. 04 and the two busbar selection disconnectors 111, 112 of the C-end line 106 is shown as an example.
The dotted line in FIG. 8 is the bus line selection disconnector 109 shown in FIG.
It is shown that the input section, the exclusive OR gate, the inverter gate, and the OR gate as components of the disconnector contact information monitoring circuit for 110 are omitted. In FIG. 8, reference numeral 1 denotes an input means, which is a plurality of input sections 10a, 10b, 11a, 11b, 12a, 12b, which individually receive the outputs of the disconnector connection receiving circuit shown in FIG.
It has 13a and 13b. The input unit 10a receives the output from the output end 124a-2 of the photocoupler 124a-1 shown in FIG. 6, and the input unit 10b receives the photocoupler 124 shown in FIG.
The output from the output end 124b-2 of b-1 is received, the input unit 11a receives the output from the output end 126a-2 of the photocoupler 126a-1 shown in FIG. 6, and the input unit 11b receives the output from FIG.
5 receives the output from the output end 126b-2 of the photocoupler 126b-1, and the input unit 12a outputs the output from the photocoupler according to the opening / closing condition of the disconnector auxiliary a contact corresponding to the busbar selection disconnector 111 shown in FIG. 5, the input unit 12b receives the output from the photocoupler according to the switching condition of the disconnector auxiliary b contact corresponding to the busbar selection disconnector 111 shown in FIG. 5, and the input unit 13a receives the busbar selection disconnector 112 shown in FIG. The output from the photocoupler according to the opening / closing condition of the disconnector auxiliary a-contact corresponding to is input to the input unit 13b from the photocoupler according to the opening / closing condition of the disconnector auxiliary b-contact corresponding to the bus selection switch 112 shown in FIG. Receive output. Reference numeral 2 denotes a combination means, which includes an exclusive OR gate 21 for inputting outputs of the input units 10a and 10b, an exclusive OR gate 22 for inputting outputs of the input units 11a and 11b, and an input unit 12a, An exclusive OR gate 23 for inputting the output of 12b, an input unit 13a,
Exclusive OR gate 2 to input the output of 13b
4 and. Reference numeral 3 is an output means, which comprises a plurality of OR gates 31 and 32, and a timer 33 having a time delay function that receives the outputs of these OR gates. The OR gate 31 inputs the outputs of the exclusive OR gates 21 and 22 individually via the inverter gates 61 and 62, and the OR gate 32 inputs the exclusive OR gate 2
The outputs of 3 and 24 are input through the inverter gates 63 and 64 individually. Reference numeral 4 is an alarm means for generating an alarm such as light emission, sound or voice by an abnormality detection signal output from the timer 33.

【０００８】この図８に示す断路器接点情報監視回路の
動作を説明する。この断路器接点情報監視回路は、例え
ば図６に示す断路器補助ａ接点１２３ａ−１が閉成して
いるときは断路器補助ｂ接点１２３ｂ−１が開成してい
ることに着目し、入力部１０ａ，１０ｂに入力された断
路器補助接点の開閉条件の組み合わせによって、断路器
接点情報としての母線選択断路器１０７〜１１２の接点
の異常、実機とリレー盤間のケーブル断線およびリレー
盤内の断路器接点受信回路の異常などの有無を監視す
る。例えば、入力部１０ａに入力された断路器補助ａ接
点１２３ａ−１の開閉条件が閉成を表すＨ信号で、入力
部１０ｂに入力された断路器補助ａ接点１２３ｂ−１の
開閉条件が閉成を表すＨ信号である場合、または、入力
部１０ａに入力された断路器補助ａ接点１２３ａ−１の
開閉条件が開成を表すＬ信号で、入力部１０ｂに入力さ
れた断路器補助ａ接点１２３ｂ−１の開閉条件が開成を
表すＬ信号である場合のように、入力部１０ａ，１０ｂ
から出力される信号が同じレベルの場合には、イクスク
ルーシブオアゲート２１が不成立となり、イクスクルー
シブオアゲート２１の出力はＬ信号となり、インバータ
ゲート６１の出力はＬ信号からＨ信号となり、出力手段
３がタイマ３３の所定の限時動作後に異常検知信号を警
報手段４に出力する。また、入力部１１ａ，１１ｂ，１
２ａ，１２ｂなどに入力される母線選択断路器１０８〜
１１２に関する接点条件に対しても、断路器接点情報監
視回路は上記と同様の働きをして異常有無の監視を常時
行う。このように断路器補助接点の開閉条件のみの組み
合わせによって断路器接点情報を監視する回路の類似構
成は、例えば特開昭６０−９３７３１号公報に開示され
ている。The operation of the disconnector contact information monitoring circuit shown in FIG. 8 will be described. This disconnector contact information monitoring circuit focuses on that the disconnector auxiliary b contact 123b-1 is opened when the disconnector auxiliary a contact 123a-1 shown in FIG. Depending on the combination of the opening / closing conditions of the disconnecting switch auxiliary contacts input to 10a and 10b, the abnormality of the contacts of the bus bar selecting disconnecting switches 107 to 112 as disconnecting switch contact information, the cable disconnection between the actual machine and the relay panel, and the disconnection in the relay panel Monitor for abnormalities in the receiver contact circuit. For example, the opening / closing condition of the disconnector auxiliary a-contact 123a-1 input to the input unit 10a is an H signal indicating closing, and the opening / closing condition of the disconnector auxiliary a-contact 123b-1 input to the input unit 10b is closed. Or an L signal indicating the opening / closing condition of the disconnector auxiliary a-contact 123a-1 input to the input unit 10a indicating that the switch is open, and the disconnector auxiliary a-contact 123b-input to the input unit 10b. As in the case where the opening / closing condition of 1 is the L signal indicating the opening, the input units 10a and 10b
When the signals output from are at the same level, the exclusive OR gate 21 is not established, the output of the exclusive OR gate 21 becomes the L signal, the output of the inverter gate 61 becomes the H signal from the L signal, and the output The means 3 outputs an abnormality detection signal to the alarm means 4 after the timer 33 performs a predetermined timed operation. Also, the input units 11a, 11b, 1
2a, 12b, etc. input to the busbar selection disconnector 108-
Also for the contact condition regarding 112, the disconnector contact information monitoring circuit operates in the same manner as described above to constantly monitor the presence or absence of an abnormality. Such a similar configuration of the circuit for monitoring the disconnector contact information by only combining the opening / closing conditions of the disconnector auxiliary contact is disclosed, for example, in Japanese Patent Laid-Open No. 60-93731.

【０００９】[0009]

【発明が解決しようとする課題】上記従来の母線保護継
電装置では、以上のように断路器接点情報監視回路が断
路器補助接点の開閉条件のみの組み合わせによって断路
器接点情報を監視するように構成されているので、例え
ば、母線選択断路器１０７〜１１２の点検時において、
点検を行う母線選択断路器の主接点が中間位置になり、
この主接点が中間位置となった母線選択断路器に対応す
る断路器補助ａ接点および断路器補助ｂ接点が共に中間
位置となることがある。この場合、図８において、入力
部１０ａ，１０ｂが共にＬ信号を出力し、イクスクルー
シブオアゲート２１が不成立となってＬ信号を出力し、
インバータゲート６１がＨ信号を出力し、オアゲート３
１がＨ信号を出力する。このオアゲート３１からのＨ信
号の出力がタイマ３３の限時動作経過後も継続すると、
タイマ３３が異常検知信号を警報手段４に出力する。結
果として、断路器接点情報監視回路が断路器接点の異常
を検出し、その都度、警報手段４が警報を発生し、母線
保護継電装置による母線保護および系統分離の運用が禁
止されるという問題があった。In the above-mentioned conventional busbar protection relay device, the disconnector contact information monitoring circuit monitors the disconnector contact information only by the combination of the opening / closing conditions of the auxiliary disconnector contacts as described above. Since it is configured, for example, at the time of checking the busbar selection disconnectors 107-112,
The main contact of the busbar selection disconnector to be inspected is at the intermediate position,
Both the disconnector auxiliary a contact and the disconnector auxiliary b contact corresponding to the busbar selection disconnector whose main contact is in the intermediate position may be in the intermediate position. In this case, in FIG. 8, the input units 10a and 10b both output the L signal, the exclusive OR gate 21 is not established, and the L signal is output.
The inverter gate 61 outputs the H signal, and the OR gate 3
1 outputs the H signal. If the output of the H signal from the OR gate 31 continues after the timer 33 has passed the time limit operation,
The timer 33 outputs an abnormality detection signal to the alarm means 4. As a result, the disconnector contact information monitoring circuit detects an abnormality of the disconnector contact, and the alarm means 4 issues an alarm each time, and the busbar protection relay is prohibited from operating the busbar protection and system separation. was there.

【００１０】この発明は上記のような課題を解決するた
めになされたものであり、その目的は母線選択断路器の
点検時でも断路器接点情報監視回路の監視動作が正常に
動作し、母線保護継電装置による母線保護および系統分
離の運用が正常に行えるようにする。The present invention has been made to solve the above problems, and an object thereof is to ensure that the monitoring operation of the disconnector contact information monitoring circuit operates normally even when the busbar selection disconnector is inspected to protect the busbar. To enable normal operation of bus protection and system separation by relay devices.

【００１１】[0011]

【課題を解決するための手段】請求項第１項に記載され
た第１の発明に係る母線保護継電装置は、入力手段と決
定手段とを備え、入力手段が回線しゃ断器における主接
点の開閉に伴い開閉するしゃ断器補助接点の開閉条件を
受け取り、決定手段が入力手段で受け取ったしゃ断器補
助接点の開閉条件を、母線選択断路器における主接点の
開閉に伴い開閉する断路器補助接点の開閉条件の組み合
わせに取り込むことによって、断路器接点情報監視回路
の監視動作を許可または禁止のいずれかに決定する構成
としたものである。A busbar protection relay device according to a first aspect of the present invention is provided with input means and determination means, the input means being a main contact of a circuit breaker. The opening / closing condition of the circuit breaker auxiliary contact, which opens / closes with the opening / closing, is received by the deciding means by the input means. The configuration is such that the monitoring operation of the disconnector contact information monitoring circuit is determined to be either permitted or prohibited by incorporating it into the combination of switching conditions.

【００１２】請求項第２項に記載された第２の発明に係
る母線保護継電装置は、第１の発明の入力手段が回線し
ゃ断器における主接点の開閉と同じに開閉するしゃ断器
補助ａ接点の閉条件を受け取り、第１の発明の決定手段
が入力手段で受け取ったしゃ断器補助ａ接点の開条件
を、母線選択断路器における主接点の開閉に伴い開閉す
る断路器補助接点の開閉条件の組み合わせに取り込むこ
とによって、断路器接点情報監視回路の監視動作を許可
または禁止のいずれかに決定する構成としたものであ
る。A busbar protection relay device according to a second aspect of the present invention is a circuit breaker auxiliary a in which the input means of the first aspect of the invention opens and closes in the same manner as the opening and closing of the main contact in a circuit breaker. An opening / closing condition for a disconnecting switch auxiliary contact that receives the closing condition of the contact and opens / closes the opening condition of the circuit breaker auxiliary a contact received by the determining means of the first invention by the inputting device in accordance with the opening / closing of the main contact in the busbar selective disconnecting switch. The monitoring operation of the disconnector contact point information monitoring circuit is determined to be either permitted or prohibited by taking in the combination of the above.

【００１３】請求項第３項に記載された第３の発明に係
る母線保護継電装置は、第１の発明の入力手段が回線し
ゃ断器における主接点の開閉と逆に開閉するしゃ断器補
助ｂ接点の開閉条件を受け取り、第１の発明の決定手段
が入力手段で受け取ったしゃ断器補助ｂ接点の開条件
を、母線選択断路器における主接点の開閉に伴い開閉す
る断路器補助接点の開閉条件の組み合わせに取り込むこ
とによって、断路器接点情報監視回路の監視動作を許可
または禁止のいずれかに決定する構成としたものであ
る。A busbar protection relay device according to a third aspect of the present invention is a circuit breaker auxiliary b in which the input means of the first aspect of the invention opens and closes in reverse to the opening and closing of the main contact of the circuit breaker. An opening / closing condition for a disconnecting switch auxiliary contact, which receives the opening / closing condition of the contact and opens / closes the opening condition of the circuit breaker auxiliary b contact received by the determining means of the first invention by the inputting means, according to the opening / closing of the main contact in the busbar selection disconnecting switch. The monitoring operation of the disconnector contact point information monitoring circuit is determined to be either permitted or prohibited by taking in the combination of the above.

【００１４】請求項第４項に記載された第４の発明に係
る母線保護継電装置は、入力手段と決定手段とを備え、
入力手段が複数の母線選択断路器に対応して設けられ母
線選択断路器の主接点の切動作に応じオン操作される押
し釦スイッチの「入」条件を受け取り、決定手段が入力
手段で受け取った押し釦スイッチの「入」条件を、母線
選択断路器における主接点の開閉に伴い開閉する断路器
補助接点の開閉条件の組み合わせに取り込むことによっ
て、断路器接点情報監視回路の監視動作を許可または禁
止のいずれかに決定する構成としたものである。A busbar protection relay device according to a fourth aspect of the present invention is provided with input means and determination means,
The input means receives the "ON" condition of the push button switch that is provided corresponding to the plurality of busbar selection disconnectors and is turned on in response to the disconnecting operation of the main contact of the busbar selection disconnector, and the determination means receives it by the input means. Allowing or disabling the monitoring operation of the disconnector contact information monitoring circuit by incorporating the "ON" condition of the push button switch into the combination of the opening and closing conditions of the auxiliary disconnector switch that opens and closes with the opening and closing of the main contact in the busbar selective disconnector It is configured to be determined as one of the above.

【００１５】請求項第５項に記載された第５の発明に係
る母線保護継電装置は、入力手段と決定手段とを備え、
入力手段が複数の母線選択断路器に統一して設けられ母
線選択断路器の主接点の切動作に応じオン操作される押
し釦スイッチの「入」条件を受け取り、決定手段が入力
手段で受け取った押し釦スイッチの「入」条件を、母線
選択断路器における主接点の開閉に伴い開閉する断路器
補助接点の開閉条件の組み合わせに取り込むことによっ
て、断路器接点情報監視回路の監視動作を許可または禁
止のいずれかに決定する構成としたものである。A busbar protection relay device according to a fifth aspect of the present invention is provided with input means and determination means,
The input means receives the "ON" condition of the push-button switch that is integrally provided for a plurality of busbar selection disconnectors and is turned on in response to the disconnection operation of the main contact of the busbar selection disconnector, and the determination means receives it by the input means. Allowing or disabling the monitoring operation of the disconnector contact information monitoring circuit by incorporating the "ON" condition of the push button switch into the combination of the opening and closing conditions of the auxiliary disconnector switch that opens and closes with the opening and closing of the main contact in the busbar selective disconnector It is configured to be determined as one of the above.

【００１６】[0016]

【作用】第１の発明の母線保護継電装置は、回線しゃ断
器の主接点の開閉条件によって、断路器接点情報監視回
路の監視動作を許容したり禁止する。The busbar protection relay device according to the first aspect of the invention permits or prohibits the monitoring operation of the disconnector contact information monitoring circuit depending on the opening / closing condition of the main contact of the circuit breaker.

【００１７】第２の発明の母線保護継電装置は、回線し
ゃ断器の主接点の開閉条件中の「入」条件によって、断
路器接点情報監視回路の監視動作を許容したり禁止す
る。The busbar protection relay device of the second invention permits or prohibits the monitoring operation of the disconnector contact information monitoring circuit according to the "ON" condition in the opening / closing conditions of the main contact of the circuit breaker.

【００１８】第３の発明の母線保護継電装置は、回線し
ゃ断器の主接点の開閉条件中の「切」条件によって、断
路器接点情報監視回路の監視動作を許容したり禁止す
る。The busbar protection relay device according to the third aspect of the present invention permits or prohibits the monitoring operation of the disconnector contact information monitoring circuit depending on the "off" condition in the opening and closing conditions of the main contact of the circuit breaker.

【００１９】第４の発明の母線保護継電装置は、複数の
母線選択断路器に対応して設けられ母線選択断路器の主
接点の切動作に応じオン操作される押し釦スイッチの
「入」条件によって、断路器接点情報監視回路の監視動
作を許容したり禁止する。The busbar protection relay device according to the fourth aspect of the present invention is an "ON" push-button switch which is provided corresponding to a plurality of busbar selection disconnecting switches and which is turned on in response to the disconnection operation of the main contacts of the busbar selecting disconnectors. Depending on the conditions, the monitoring operation of the disconnector contact information monitoring circuit is permitted or prohibited.

【００２０】第５の発明の母線保護継電装置は、複数の
母線選択断路器に統一して設けられ母線選択断路器の主
接点の切動作に応じオン操作される押し釦スイッチの
「入」条件によって、断路器接点情報監視回路の監視動
作を許容したり禁止する。The busbar protection relay device according to the fifth aspect of the present invention is provided with a plurality of busbar selection disconnecting switches and is turned on when a main contact of the busbar selecting disconnector is turned off. Depending on the conditions, the monitoring operation of the disconnector contact information monitoring circuit is permitted or prohibited.

【００２１】[0021]

【実施例】以下、この発明の各実施例について図１乃至
図４を用い、前記従来例と同一部分に同一符号を付して
説明する。これらの図１乃至図４では説明を簡明にする
ことから図５に示すＡ端回線１０４の２つの母線選択断
路器１０７，１０８およびＣ端回線１０６の２つの母線
選択断路器１１１，１１２に関する断路器接点情報監視
回路を例として図示してある。なお、各実施例におい
て、電力系統の標準二重母線方式を例とする母線保護継
電装置、母線保護継電装置における断路器接点受信回路
およびしゃ断器接点受信回路については同一であるので
図５乃至図７をそのまま使用する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Each embodiment of the present invention will be described below with reference to FIGS. In order to simplify the description in FIGS. 1 to 4, disconnection of the two busbar selection disconnectors 107 and 108 of the A-end line 104 and the two busbar selection disconnectors 111 and 112 of the C-end line 106 shown in FIG. The device contact information monitoring circuit is shown as an example. In each embodiment, the busbar protection relay device, the disconnector contact reception circuit and the circuit breaker contact reception circuit in the busbar protection relay device, which are examples of the standard double busbar system of the electric power system, are the same, and therefore, FIG. 7 to 7 are used as they are.

【００２２】実施例１（請求項１、請求項２に対応）．
図１は実施例１の母線保護継電装置における断路器接点
情報監視回路を示す回路図である。この図１における点
線は図５に示す母線選択断路器１０９，１１０に関する
断路器接点情報監視回路構成要素としての入力部とイク
スクルーシブオアゲート、インバータゲート、オアゲー
ト、回線しゃ断器１１４の入力部などの図示を省略した
ことを表す。図１において、この実施例１の断路器接点
情報監視回路は、従来例と同様なイクスクルーシブオア
ゲート２１〜２４から構成された組み合わせ手段２と、
オアゲート３１，３２および監視不良確認タイマ３３か
ら構成される出力手段３と、警報手段４と、インバータ
ゲート６１〜６４に加え、入力手段１Ａと決定手段５と
を備える。入力手段１Ａは従来例と同様な図６に示す断
路器接続受信回路の出力を個別に受信する複数の入力部
１０ａ，１０ｂ，１１ａ，１１ｂ，１２ａ，１２ｂ，１
３ａ，１３ｂに加え、図７に示すしゃ断器接点受信回路
の出力を個別に受信する複数の入力部１４，１５を有す
る。入力部１４は図５に示すＡ端回線１０４に設けられ
た回線しゃ断器１１３の主接点と同じに開閉する図７に
示すしゃ断器補助ａ接点１２９ａの開閉条件に対応する
図７に示すホトカプラ１３０ａ−１の出力端１３０ａ−
２からの出力を受信する。入力部１５は図５に示すＣ端
回線１０６に設けられた回線しゃ断器１１５の主接点と
同じに開閉する図外のしゃ断器補助ａ接点の開閉条件に
対応する図外のホトカプラの出力端からの出力を受信す
る。決定手段５は入力手段２の入力部１４，１５で受け
取ったしゃ断器補助ａ接点の開閉条件を組み合わせ手段
２の出力に取り込むことによって、断路器接点情報監視
回路の監視動作の許容または禁止を決定する。つまり、
決定手段５はアンドゲート５１，５２，５３，５４を有
する。アンドゲート５１は、母線選択断路器１０７に対
応する断路器補助ａ接点１２３ａ−１と断路器補助ｂ接
点１２３ｂ−１との開閉条件としての入力部１０ａ，１
０ｂの出力を組み合わせるイクスクルーシブオアゲート
２１の出力をインバータゲート６１を介して入力とする
とともに、Ａ端回線１０４の回線しゃ断器１１３に対応
するしゃ断器補助ａ接点１２９ａの開閉条件としての入
力部１４の出力を入力とする。このアンドゲート５１の
出力は出力手段３のオアゲート３１に入力される。アン
ドゲート５２は、母線選択断路器１０７に対応する断路
器補助ａ接点１２５ａ−１と断路器補助ｂ接点１２５ｂ
−１との開閉条件としての入力部１１ａ，１１ｂの出力
を組み合わせるイクスクルーシブオアゲート２２の出力
をインバータゲート６２を介して入力とするとともに、
Ａ端回線１０４の回線しゃ断器１１３に対応するしゃ断
器補助ａ接点１２９ａの開閉条件としての入力部１４の
出力を入力とする。このアンドゲート５２の出力は出力
手段３のオアゲート３１に入力される。アンドゲート５
３は、母線選択断路器１１１に対応する断路器補助ａ接
点と断路器補助ｂ接点との開閉条件としての入力部１２
ａ，１２ｂの出力を組み合わせるイクスクルーシブオア
ゲート２３の出力をインバータゲート６３を介して入力
とするとともに、Ｃ端回線１０６の回線しゃ断器１１５
に対応するしゃ断器補助ａ接点の開閉条件としての入力
部１５の出力を入力とする。このアンドゲート５３の出
力は出力手段３のオアゲート３２に入力される。アンド
ゲート５４は、母線選択断路器１１２に対応する断路器
補助ａ接点と断路器補助ｂ接点との開閉条件としての入
力部１３ａ，１３ｂの出力を組み合わせるイクスクルー
シブオアゲート２４の出力をインバータゲート６４を介
して入力とするとともに、Ｃ端回線１０６の回線しゃ断
器１１５に対応するしゃ断器補助ａ接点の開閉条件とし
ての入力部１５の出力を入力とする。このアンドゲート
５４の出力は出力手段３のオアゲート３２に入力され
る。Example 1 (corresponding to claim 1 and claim 2).
FIG. 1 is a circuit diagram showing a disconnector contact information monitoring circuit in the busbar protective relay device according to the first embodiment. The dotted line in FIG. 1 is an input section as a disconnector contact information monitoring circuit constituent element regarding the busbar selection disconnectors 109 and 110 shown in FIG. 5, and an exclusive OR gate, an inverter gate, an OR gate, an input section of the circuit breaker 114, etc. Is omitted. In FIG. 1, the disconnecting switch contact information monitoring circuit according to the first embodiment is a combination means 2 composed of the exclusive OR gates 21 to 24 similar to the conventional example,
The output means 3 including the OR gates 31 and 32 and the monitoring failure confirmation timer 33, the alarm means 4, the inverter gates 61 to 64, and the input means 1A and the determination means 5 are provided. The input means 1A has a plurality of input sections 10a, 10b, 11a, 11b, 12a, 12b, 1 for individually receiving the outputs of the disconnector connection receiving circuit shown in FIG.
In addition to 3a and 13b, it has a plurality of input parts 14 and 15 which individually receive the outputs of the circuit breaker contact receiving circuit shown in FIG. The input unit 14 opens and closes in the same way as the main contact of the circuit breaker 113 provided in the A-end line 104 shown in FIG. 5, and corresponds to the opening / closing condition of the circuit breaker auxiliary a contact 129a shown in FIG. -1 output end 130a-
Receive output from 2. The input unit 15 is opened and closed in the same manner as the main contact of the circuit breaker 115 provided in the C-end line 106 shown in FIG. 5 from the output end of the photo coupler (not shown) corresponding to the opening / closing condition of the circuit breaker auxiliary a contact (not shown). Receive the output of. The determining means 5 determines whether to permit or prohibit the monitoring operation of the disconnector contact information monitoring circuit by incorporating the switching condition of the circuit breaker auxiliary a-contact received by the input units 14 and 15 of the input means 2 into the output of the combining means 2. To do. That is,
The determination means 5 has AND gates 51, 52, 53, 54. The AND gate 51 is an input unit 10a, 1 as an opening / closing condition of the disconnector auxiliary a-contact 123a-1 and the disconnector auxiliary b-contact 123b-1 corresponding to the busbar selection disconnector 107.
The output of the exclusive OR gate 21 that combines the outputs of 0b is input via the inverter gate 61, and the input section as the opening / closing condition of the breaker auxiliary a contact 129a corresponding to the line breaker 113 of the A-end line 104. The output of 14 is input. The output of the AND gate 51 is input to the OR gate 31 of the output means 3. The AND gate 52 has a disconnector auxiliary a contact 125a-1 and a disconnector auxiliary b contact 125b corresponding to the busbar selection disconnector 107.
The output of the exclusive OR gate 22 that combines the outputs of the input units 11a and 11b as an opening / closing condition with -1 is input through the inverter gate 62, and
The output of the input unit 14 as an opening / closing condition of the circuit breaker auxiliary a contact 129a corresponding to the circuit breaker 113 of the A-end line 104 is input. The output of the AND gate 52 is input to the OR gate 31 of the output means 3. AND gate 5
3 is an input unit 12 as an opening / closing condition of a disconnector auxiliary a contact and a disconnector auxiliary b contact corresponding to the busbar selection disconnector 111.
The output of the exclusive OR gate 23 that combines the outputs of a and 12b is input through the inverter gate 63, and the line breaker 115 of the C-end line 106 is used.
The output of the input unit 15 as the opening / closing condition of the circuit breaker auxiliary a contact corresponding to is input. The output of the AND gate 53 is input to the OR gate 32 of the output means 3. The AND gate 54 is an inverter gate that combines the outputs of the exclusive OR gates 24 that combine the outputs of the input units 13a and 13b as the opening / closing conditions of the disconnector auxiliary a contact and the disconnector auxiliary b contact corresponding to the busbar selection disconnector 112. The input is made via 64, and the output of the input unit 15 as an opening / closing condition of the circuit breaker auxiliary a contact corresponding to the circuit breaker 115 of the C-end line 106 is taken as an input. The output of the AND gate 54 is input to the OR gate 32 of the output means 3.

【００２３】この実施例１の動作について説明する。母
線選択断路器１０７に対応する断路器補助ａ接点１２３
ａ−１が閉成し、入力部１０ａがＨ信号を受信している
ときは、母線選択断路器１０７に対応する断路器補助ｂ
接点１２３ｂ−１が開成し、入力部１０ｂがＬ信号を受
信しているのが正常な監視動作であることに着目し、例
えば、回線しゃ断器１１３の「入」の条件によって断路
器接点情報監視回路の監視動作を正常に許容したり禁止
する。The operation of the first embodiment will be described. Disconnector auxiliary a-contact 123 corresponding to the busbar selection disconnector 107
When a-1 is closed and the input unit 10a receives the H signal, the disconnector auxiliary b corresponding to the bus selection disconnector 107 is provided.
Paying attention to the normal monitoring operation that the contact 123b-1 is opened and the input unit 10b is receiving the L signal, for example, the disconnector contact information monitoring is performed under the condition of "ON" of the line breaker 113. Allows or prohibits normal circuit monitoring operations.

【００２４】具体的には、母線選択断路器１０７が
「入」でＡ端回線１０４が甲母線１０１に接続された状
態において、母線選択断路器１０７に対応する断路器補
助ａ接点１２３ａ−１が閉成しているとともに入力部１
０ａがＨ信号を出力し、母線選択断路器１０７に対応す
る断路器補助ｂ接点１２３ｂ−１が開成していることに
よって、図１に示す入力部１０ａがＨ信号を出力し、入
力部１０ｂがＬ信号を出力していると、イクスクルーシ
ブオアゲート２１が成立してＨ信号を出力し、インバー
タゲート６１の出力はＬ信号となる。よって、この時、
入力部１４が回線しゃ断器１１３に対応するしゃ断器ａ
接点１２９ａの開閉条件を表すＨ信号またはＬ信号を出
力しても、図１に示す決定手段５のアンドゲート５１は
Ｌ信号を出力手段３に出力する。つまり、決定手段５は
入力部１０ａ，１０ｂの出力レベル（一方がＨ信号で他
方がＬ信号）が不一致と正常なときは、入力部１４の出
力レベル（Ｈ信号またはＬ信号）に無関係に、断路器接
点受信回路が正常と判断する。Specifically, in the state where the busbar selection disconnector 107 is "ON" and the A-end line 104 is connected to the upper busbar 101, the disconnector auxiliary a contact 123a-1 corresponding to the busbar selection disconnector 107 is Closed and input section 1
0a outputs the H signal, and the disconnecting switch auxiliary b contact 123b-1 corresponding to the bus bar selecting disconnecting switch 107 is opened, so that the input unit 10a shown in FIG. When outputting the L signal, the exclusive OR gate 21 is established to output the H signal, and the output of the inverter gate 61 becomes the L signal. Therefore, at this time,
Circuit breaker a whose input unit 14 corresponds to the circuit breaker 113
Even if the H signal or the L signal indicating the opening / closing condition of the contact 129 a is output, the AND gate 51 of the determining means 5 shown in FIG. 1 outputs the L signal to the output means 3. That is, when the output levels of the input units 10a and 10b (one of which is the H signal and the other of which is the L signal) do not match and the output levels of the input units 10a and 10b are normal, the determining unit 5 is independent of the output level of the input unit 14 (the H signal or the L signal). The disconnector contact receiving circuit is judged to be normal.

【００２５】次に、母線選択断路器１０７の点検時にお
いて、同母線選択断路器１０７の主接点が中間位置にな
った場合、断路器補助ａ接点１２３ａ−１と断路器補助
ｂ接点１２３ｂ−１とが共に開成した状態となり、入力
部１０ａ，１０ｂが共にＬ信号を出力し、イクスクルー
シブオアゲート２１が不成立となってＬ信号を出力し、
インバータゲート６１の出力はＨ信号となる。この時、
Ａ端回線１０４への電力供給は停止されており、回線し
ゃ断器１１３は「切」となっているので、入力部１４が
Ｌ信号を出力し、アンドゲート５１はＬ信号を出力し、
出力手段３が異常検知信号を出力せず、断路器接点情報
監視回路の監視動作は正常に許容され、監視不良に至ら
ない。Next, when the main contact of the busbar selection disconnector 107 is in the intermediate position during the inspection of the busbar selection disconnector 107, the auxiliary disconnector auxiliary a contact 123a-1 and the auxiliary disconnector auxiliary b contact 123b-1. And are in the open state, the input sections 10a and 10b both output the L signal, the exclusive OR gate 21 is not established, and the L signal is output.
The output of the inverter gate 61 becomes the H signal. This time,
Since the power supply to the A-end line 104 is stopped and the line breaker 113 is turned off, the input unit 14 outputs the L signal, and the AND gate 51 outputs the L signal.
The output means 3 does not output the abnormality detection signal, the monitoring operation of the disconnector contact information monitoring circuit is normally permitted, and the monitoring failure does not occur.

【００２６】また、母線選択断路器１０７が「入」でＡ
端回線１０４が甲母線１０１に接続され、母線選択断路
器１０７に対応する断路器補助ａ接点１２３ａ−１が閉
成し、母線選択断路器１０７に対応する断路器補助ｂ接
点１２３ｂ−１が開成している状態において、実器とリ
レー盤間のケーブル断線が起こると、入力部１０ａ，１
０ｂがＬ信号を出力し、イクスクルーシブオアゲート２
１が不成立となってＬ信号を出力し、インバータゲート
６１の出力はＨ信号となる。この時、Ａ端回線１０４に
は電力が供給されており、回線しゃ断器１１３は「入」
となっているので、入力部１４はＨ信号を出力し、アン
ドゲート５１はＨ信号を出力し、オアゲート３１がＨ信
号を出力し、タイマ３３が起動し、このタイマ３３の所
定の限時動作経過後も、上記アンドゲート３１のＨ信号
の出力が継続していると、タイマ３３が異常信号を警報
手段４に出力し、断路器接点情報監視回路の監視動作は
正常に禁止され、監視不良に至らない。Further, when the busbar selection disconnector 107 is "ON", A
The end line 104 is connected to the instep bus 101, the disconnector auxiliary a contact 123a-1 corresponding to the busbar selection disconnector 107 is closed, and the disconnector auxiliary b contact 123b-1 corresponding to the busbar selection disconnector 107 is opened. If a cable break between the actual device and the relay panel occurs while the input unit 10a, 1
0b outputs L signal, exclusive or gate 2
When 1 is not satisfied, the L signal is output, and the output of the inverter gate 61 becomes the H signal. At this time, power is being supplied to the A-end line 104, and the line breaker 113 is turned on.
Therefore, the input unit 14 outputs the H signal, the AND gate 51 outputs the H signal, the OR gate 31 outputs the H signal, the timer 33 is started, and the predetermined time-delayed operation of the timer 33 elapses. After that, if the output of the H signal from the AND gate 31 continues, the timer 33 outputs an abnormal signal to the alarm means 4, and the monitoring operation of the disconnector contact information monitoring circuit is normally prohibited, resulting in a monitoring failure. I can't reach it.

【００２７】要するにこの実施例１では、図１に示すよ
うに、入力部１４，１５と決定手段５とが回線しゃ断器
１１３〜１１５の主接点の開閉条件中の「入」条件によ
って断路器接点情報監視回路の監視動作を許容したり禁
止するように構成したので、表示盤に使用される回線し
ゃ断器１１３〜１１５の主接点の開閉条件中の「入」条
件をそのまま断路器接点情報監視回路に利用する簡単な
構造でありながら、母線選択断路器１０７〜１１２の点
検時において、点検を行う母線選択断路器の主接点が中
間位置になった場合でも、出力手段３が異常検知信号を
出力せず、断路器接点情報監視回路が監視不良にならな
い。加えて、保護範囲の回線に電力が供給されている場
合には、断路器接点情報監視回路が正常な監視動作を行
うので、母線保護継電装置による母線保護および系統分
離の運用が常に適切に行える。In summary, in the first embodiment, as shown in FIG. 1, the input parts 14 and 15 and the determining means 5 are connected to the disconnecting switch by the "on" condition among the opening and closing conditions of the main contacts of the circuit breakers 113 to 115. Since the monitoring operation of the information monitoring circuit is configured to be permitted or prohibited, the "ON" condition in the opening / closing conditions of the main contacts of the circuit breakers 113 to 115 used for the display panel is maintained as it is. The output means 3 outputs an abnormality detection signal even when the main contact of the busbar selection disconnecting switch 107-112 to be inspected is in the intermediate position when the busbar selection disconnecting switches 107-112 are inspected. The disconnector contact information monitoring circuit does not fail. In addition, when power is supplied to the line within the protection range, the disconnector contact information monitoring circuit performs normal monitoring operation, so busbar protection and system separation should always be properly operated by the busbar protection relay device. You can do it.

【００２８】実施例２（請求項３に対応）．図２は実施
例２の母線保護継電装置における断路器接点情報監視回
路を示す回路図である。この図２における点線は図５に
示す母線選択断路器１０９，１１０に関する断路器接点
情報監視回路構成要素としての入力部とイクスクルーシ
ブオアゲート、インバータゲート、オアゲート、回線し
ゃ断器１１４の入力部などの図示を省略したことを表
す。図２において、この実施例２の断路器接点情報監視
回路は、実施例１における回線しゃ断器の主接点の
「入」条件に代えて、回線しゃ断器の主接点の「切」条
件を用いたことに特徴がある。具体的には、実施例１に
おける回線しゃ断器１１３，１１５の主接点の「入」条
件を受信する入力部１４，１５に代替し、入力手段１Ｂ
が回線しゃ断器１１３，１１５の主接点の「切」条件を
受信する入力部１４Ａ，１５Ａを有し、決定手段５Ａが
入力部１４Ａ，１５Ａでの回線しゃ断器の主接点「切」
条件を組み合わせ手段２の出力に取り込む。入力部１４
Ａは回線しゃ断器１１３の主接点の「切」条件を受信中
は図外のインバータゲートによってＨ信号を出力し、そ
れ以外は同図外のインバータゲートによってＬ信号を出
力する。入力部１５Ａは回線しゃ断器１１５の主接点の
「切」条件を受信中は図外のインバータゲートによって
Ｈ信号を出力し、それ以外は同図外のインバータゲート
によってＬ信号を出力する。決定手段５Ａは禁止入力付
きアンドゲート５１Ａ，５２Ａ，５３Ａ，５４Ａを備え
る。禁止入力付きアンドゲート５１Ａは入力部１０ａ，
１０ｂの出力を組み合わせるイクスクルーシブオアゲー
ト２１の出力をインバータゲート６１を介して入力とす
るとともに、入力部１４Ａの出力を禁止入力とする。禁
止入力付きアンドゲート５２Ａは入力部１１ａ，１１ｂ
の出力を組み合わせるイクスクルーシブオアゲート２２
の出力をインバータゲート６２を介して入力とするとと
もに、入力部１４Ａの出力を禁止入力とする。禁止入力
付きアンドゲート５３Ａは入力部１２ａ，１２ｂの出力
を組み合わせるイクスクルーシブオアゲート２３の出力
をインバータゲート６３を介して入力とするとともに、
入力部１５Ａの出力を禁止入力とする。禁止入力付きア
ンドゲート５４Ａは入力部１３ａ，１３ｂの出力を組み
合わせるイクスクルーシブオアゲート２４の出力をイン
バータゲート６４を介して入力とするとともに、入力部
１５Ａの出力を禁止入力とする。Embodiment 2 (corresponding to claim 3). FIG. 2 is a circuit diagram showing a disconnector contact information monitoring circuit in the busbar protective relay device according to the second embodiment. The dotted line in FIG. 2 is an input section as a disconnector contact information monitoring circuit constituent element relating to the busbar selection disconnectors 109 and 110 shown in FIG. 5, and an exclusive OR gate, an inverter gate, an OR gate, an input section of the circuit breaker 114, etc. Is omitted. In FIG. 2, the disconnecting switch contact information monitoring circuit of the second embodiment uses the “off” condition of the main contact of the line breaker instead of the “on” condition of the main contact of the line breaker in the first embodiment. It is characterized by this. Specifically, instead of the input units 14 and 15 that receive the “ON” condition of the main contacts of the circuit breakers 113 and 115 in the first embodiment, the input unit 1B is used.
Has input sections 14A and 15A for receiving the "disconnect" condition of the main contacts of the circuit breakers 113 and 115, and the determining means 5A is "disconnect" to the main contacts of the circuit breakers at the input sections 14A and 15A.
The conditions are taken into the output of the combination means 2. Input unit 14
A receives an "OFF" condition of the main contact of the circuit breaker 113, and outputs an H signal by an inverter gate (not shown), and outputs an L signal by an inverter gate (not shown) otherwise. The input unit 15A outputs an H signal by an inverter gate (not shown) while receiving the "off" condition of the main contact of the circuit breaker 115, and outputs an L signal by an inverter gate (not shown) otherwise. The deciding means 5A is provided with AND gates 51A, 52A, 53A and 54A with prohibition input. The AND gate 51A with the prohibition input has the input unit 10a,
The output of the exclusive OR gate 21 that combines the outputs of 10b is input through the inverter gate 61, and the output of the input unit 14A is prohibited input. The AND gate 52A with prohibition input is provided in the input sections 11a and 11b.
Exclusive OR gate 22 that combines the outputs of
Is output via the inverter gate 62, and the output of the input unit 14A is prohibited. The AND gate 53A with inhibition input receives the output of the exclusive OR gate 23, which combines the outputs of the input units 12a and 12b, as an input via the inverter gate 63, and
The output of the input unit 15A is prohibited. The AND gate 54A with prohibition input inputs the output of the exclusive OR gate 24 that combines the outputs of the input units 13a and 13b via the inverter gate 64, and the output of the input unit 15A as the prohibition input.

【００２９】この実施例２の動作について説明する。母
線選択断路器１０７が「入」でＡ端回線１０４が甲母線
１０１に接続された状態において、母線選択断路器１０
７に対応する断路器補助ａ接点１２３ａ−１が閉成して
いることによって入力部１０ａがＨ信号を出力し、母線
選択断路器１０７に対応する断路器補助ｂ接点１２３ｂ
−１が開成していることによって入力部１０ｂがＬ信号
を出力していると、イクスクルーシブオアゲート２１が
成立してＨ信号を出力し、インバータゲート６１の出力
はＬ信号となる。よって、この時、入力部１４が回線し
ゃ断器１１３に対応するしゃ断器ａ接点１２９ａの開閉
条件を表すＨ信号またはＬ信号を出力しても、決定手段
５Ａのアンドゲート５１はＬ信号を出力手段３に出力す
る。つまり、決定手段５Ａは入力部１０ａ，１０ｂの出
力レベル（一方がＨ信号で他方がＬ信号）が不一致と正
常なときは、入力部１４の出力レベル（Ｈ信号またはＬ
信号）に無関係に、断路器接点受信回路が正常と判断す
る。The operation of the second embodiment will be described. When the busbar selection disconnector 107 is “ON” and the A-end line 104 is connected to the instep busbar 101, the busbar selection disconnector 10
The disconnector auxiliary a-contact 123a-1 corresponding to No. 7 is closed so that the input unit 10a outputs the H signal, and the disconnector auxiliary-b contact 123b corresponding to the bus selection disconnector 107.
When the input unit 10b outputs the L signal due to -1 being opened, the exclusive OR gate 21 is established to output the H signal, and the output of the inverter gate 61 becomes the L signal. Therefore, at this time, even if the input unit 14 outputs the H signal or the L signal representing the opening / closing condition of the circuit breaker a contact 129a corresponding to the circuit breaker 113, the AND gate 51 of the determining unit 5A outputs the L signal. Output to 3. That is, when the output levels of the input units 10a and 10b (one of which is the H signal and the other of which is the L signal) do not coincide with each other and the output level of the input unit 14 is normal (H signal or L signal).
Regardless of the signal), the disconnector contact receiving circuit determines that it is normal.

【００３０】次に、母線選択断路器１０７の点検時にお
いて、同母線選択断路器１０７の主接点が中間位置にな
った場合、断路器補助ａ接点１２３ａ−１と断路器補助
ｂ接点１２３ｂ−１とが共に開成した状態となり、入力
部１０ａ，１０ｂが共にＬ信号を出力し、イクスクルー
シブオアゲート２１が不成立となってＬ信号を出力し、
インバータゲート６１の出力はＨ信号となる。この時、
回線しゃ断器１１３は「切」となっているので、入力部
１４ＡがＨ信号を出力し、アンドゲート５１の禁止入力
はＬ信号となり、アンドゲート５１はＬ信号を出力し、
出力手段３が異常検知信号を出力せず断路器接点情報監
視回路の監視動作は正常に許容され、監視不良に至らな
い。Next, when the main contact of the busbar selection disconnector 107 is in the intermediate position during inspection of the busbar selection disconnector 107, the disconnector auxiliary a-contact 123a-1 and the disconnector auxiliary b-contact 123b-1 are provided. And are in the open state, the input sections 10a and 10b both output the L signal, the exclusive OR gate 21 is not established, and the L signal is output.
The output of the inverter gate 61 becomes the H signal. This time,
Since the line breaker 113 is "off", the input section 14A outputs the H signal, the inhibition input of the AND gate 51 becomes the L signal, and the AND gate 51 outputs the L signal.
Since the output means 3 does not output the abnormality detection signal, the monitoring operation of the disconnector contact information monitoring circuit is normally permitted, and the monitoring failure does not occur.

【００３１】また、母線選択断路器１０７が「入」でＡ
端回線１０４が甲母線１０１に接続され、母線選択断路
器１０７に対応する断路器補助ａ接点１２３ａ−１が閉
成し、母線選択断路器１０７に対応する断路器補助ｂ接
点１２３ｂ−１が開成している状態において、実機とリ
レー盤間のケーブル断線が起こると、入力部１０ａ，１
０ｂがＬ信号を出力し、イクスクルーシブオアゲート２
１が不成立となってＬ信号を出力し、インバータゲート
６１の出力はＨ信号となる。この時、Ａ端回線１０４に
は電力が供給されており、回線しゃ断器１１３は「入」
となっているので、入力部１４ＡはＬ信号を出力し、ア
ンドゲート５１の禁止入力はＨ信号となり、アンドゲー
ト５１がＨ信号を出力し、タイマ３３が起動し、このタ
イマ３３の所定の限時動作経過後も、上記アンドゲート
３１のＨ信号の出力が継続していると、タイマ３３が異
常信号を警報手段４に出力し、断路器接点情報監視回路
の監視動作は正常に禁止され、監視不良に至らない。Further, when the bus bar selection disconnector 107 is "ON", A
The end line 104 is connected to the instep bus 101, the disconnector auxiliary a contact 123a-1 corresponding to the busbar selection disconnector 107 is closed, and the disconnector auxiliary b contact 123b-1 corresponding to the busbar selection disconnector 107 is opened. If the cable breaks between the actual machine and the relay board in the operating state, the input parts 10a, 1
0b outputs L signal, exclusive or gate 2
When 1 is not satisfied, the L signal is output, and the output of the inverter gate 61 becomes the H signal. At this time, power is being supplied to the A-end line 104, and the line breaker 113 is turned on.
Therefore, the input section 14A outputs the L signal, the prohibition input of the AND gate 51 becomes the H signal, the AND gate 51 outputs the H signal, the timer 33 is activated, and the predetermined time limit of the timer 33 is reached. If the H signal of the AND gate 31 continues to be output even after the operation, the timer 33 outputs an abnormal signal to the alarm means 4, and the monitoring operation of the disconnector contact information monitoring circuit is normally prohibited. Does not lead to failure.

【００３２】要するにこの実施例２では、図２に示すよ
うに、入力部１４Ａ，１５Ａと決定手段５Ａとが回線し
ゃ断器１１３〜１１５の主接点の開閉条件中の「切」条
件によって断路器接点情報監視回路の監視動作を許容し
たり禁止するように構成したので、表示盤に使用される
回線しゃ断器１１３〜１１５の主接点の開閉条件中の
「切」条件を図外のインバータゲートで反転して断路器
接点情報監視回路に利用する簡単な構造でありながら、
母線選択断路器１０７〜１１２の点検時において、点検
を行う母線選択断路器の主接点が中間位置になった場合
でも、出力手段３が異常検知信号を出力せず、断路器接
点情報監視回路が監視不良にならない。加えて、保護範
囲の回線に電力が供給されている場合には、断路器接点
情報監視回路が正常な監視動作を行うので、母線保護継
電装置による母線保護および系統分離の運用が常に適切
に行える。In summary, in the second embodiment, as shown in FIG. 2, the input sections 14A and 15A and the determining means 5A are connected to the disconnecting switch contacts by the "off" condition among the opening and closing conditions of the main contacts of the line breakers 113 to 115. Since it is configured to allow or prohibit the monitoring operation of the information monitoring circuit, the "OFF" condition in the opening / closing conditions of the main contacts of the circuit breakers 113 to 115 used for the display board is inverted by the inverter gate (not shown). Although it has a simple structure to be used for a disconnector contact information monitoring circuit,
At the time of inspecting the busbar selection disconnectors 107 to 112, even when the main contact of the busbar selection disconnector to be inspected is in the intermediate position, the output means 3 does not output an abnormality detection signal and the disconnector contact information monitoring circuit It does not cause poor monitoring. In addition, when power is supplied to the line within the protection range, the disconnector contact information monitoring circuit performs normal monitoring operation, so busbar protection and system separation should always be properly operated by the busbar protection relay device. You can do it.

【００３３】実施例３（請求項４に対応）．図３は実施
例３の母線保護継電装置における断路器接点情報監視回
路を示す回路図である。この図３における点線は図５に
示す母線選択断路器１０９，１１０に関する断路器接点
情報監視回路構成要素としての入力部とイクスクルーシ
ブオアゲート、インバータゲート、オアゲート、母線選
択断路器１０９，１１０に対応して設けられる押し釦ス
イッチの入力部などの図示を省略したことを表す。図３
において、この実施例３の断路器接点情報監視回路は、
実施例１および実施例２における回線しゃ断器の主接点
の開閉条件に代えて、母線選択断路器の主接点を切った
ときに、操作者がオン操作する押し釦スイッチの「入」
条件を用いたことに特徴がある。具体的には、実施例１
および実施例２における回線しゃ断器の主接点開閉条件
を受信する入力部１４，１５に代替し、入力手段１Ｃが
母線選択断路器１０７，１０８に対応して設けられた押
し釦スイッチの「入」条件を受信する入力部１４Ｂと母
線選択断路器１１１，１１２に対応して設けられた押し
釦スイッチの「入」条件を受信する入力部１５Ａとを有
し、決定手段５Ａが入力部１４Ａ，１５Ａでの押し釦ス
イッチ「入」条件を組み合わせ手段２の出力に取り込
む。押し釦スイッチは、操作者が１回目に押すと閉成状
態を保持したままとなり、この閉成状態保持中において
操作者が２回目に押すと開成するロック付き構造になっ
ている。Embodiment 3 (corresponding to claim 4). FIG. 3 is a circuit diagram showing a disconnector contact information monitoring circuit in the busbar protective relay device according to the third embodiment. The dotted line in FIG. 3 indicates the input section as the disconnector contact information monitoring circuit constituent element relating to the busbar selection disconnectors 109 and 110 shown in FIG. 5 and the exclusive OR gate, the inverter gate, the OR gate, and the busbar selection disconnectors 109 and 110. This indicates that the illustration of the input portion of the push button switch provided correspondingly is omitted. FIG.
In the third embodiment, the disconnector contact information monitoring circuit of the third embodiment is
Instead of the opening / closing condition of the main contact of the circuit breaker in the first and second embodiments, the operator turns on the push button switch when the main contact of the busbar selection disconnector is turned off.
It is characterized by using conditions. Specifically, Example 1
Also, in place of the input units 14 and 15 for receiving the main contact opening / closing conditions of the circuit breaker in the second embodiment, the input means 1C is "ON" of the push button switch provided corresponding to the bus bar selection disconnectors 107 and 108. The determining unit 5A has an input unit 14B for receiving a condition and an input unit 15A for receiving the "ON" condition of a push button switch provided corresponding to the bus bar selection disconnectors 111, 112, and the deciding means 5A has the input units 14A, 15A. The push-button switch “ON” condition in step 3 is taken into the output of the combination means 2. The push button switch has a lock structure in which the closed state is maintained when the operator presses it for the first time and is opened when the operator presses it for the second time while the closed state is maintained.

【００３４】この実施例３の動作について説明する。母
線選択断路器１０７が「入」でＡ端回線１０４が甲母線
１０１に接続された状態において、母線選択断路器１０
７に対応する断路器補助ａ接点１２３ａ−１が閉成して
いることによって入力部１０ａがＨ信号を出力し、母線
選択断路器１０７に対応する断路器補助ｂ接点１２３ｂ
−１が開成していることによって入力部１０ｂがＬ信号
を出力していると、イクスクルーシブオアゲート２１が
成立してＨ信号を出力し、インバータゲート６１の出力
はＬ信号となる。よって、この時、入力部１４Ｂが第１
断路器ロック情報としての押し釦スイッチの開閉条件を
表すＨ信号またはＬ信号を出力しても、決定手段５Ａの
アンドゲート５１はＬ信号を出力手段３に出力する。つ
まり、決定手段５Ａは入力部１０ａ，１０ｂの出力レベ
ル（一方がＨ信号で他方がＬ信号）が不一致と正常なと
きは、入力部１４の出力レベル（Ｈ信号またはＬ信号）
に無関係に、断路器接点受信回路が正常と判断する。The operation of the third embodiment will be described. When the busbar selection disconnector 107 is “ON” and the A-end line 104 is connected to the instep busbar 101, the busbar selection disconnector 10
The disconnector auxiliary a-contact 123a-1 corresponding to No. 7 is closed so that the input unit 10a outputs the H signal, and the disconnector auxiliary-b contact 123b corresponding to the bus selection disconnector 107.
When the input unit 10b outputs the L signal due to -1 being opened, the exclusive OR gate 21 is established to output the H signal, and the output of the inverter gate 61 becomes the L signal. Therefore, at this time, the input unit 14B is the first
Even if the H signal or the L signal indicating the opening / closing condition of the push button switch is output as the disconnector lock information, the AND gate 51 of the determining unit 5A outputs the L signal to the output unit 3. That is, when the output levels of the input units 10a and 10b (one of which is the H signal and the other of which is the L signal) do not match with each other, the determining unit 5A normally outputs the output level of the input unit 14 (the H signal or the L signal).
Regardless of, the disconnector contact receiving circuit is judged to be normal.

【００３５】次に、母線選択断路器１０７の点検時にお
いて、同母線選択断路器１０７の主接点が中間位置にな
った場合、断路器補助ａ接点１２３ａ−１と断路器補助
ｂ接点１２３ｂ−１とが共に開成した状態となり、入力
部１０ａ，１０ｂが共にＬ信号を出力し、イクスクルー
シブオアゲート２１が不成立となってＬ信号を出力し、
インバータゲート６１の出力はＨ信号となる。この時、
母線選択断路器１０７の点検時ということから、同母線
選択断路器１０７に対応する押し釦スイッチは「入」と
なっているので、入力部１４ＢがＨ信号を出力し、アン
ドゲート５１の禁止入力はＬ信号となり、アンドゲート
５１はＬ信号を出力し、出力手段３が異常検知信号を出
力せず断路器接点情報監視回路の監視動作は正常に許容
され、監視不良に至らない。Next, when the main contact of the busbar selection disconnector 107 is in the intermediate position during inspection of the busbar selection disconnector 107, the disconnector auxiliary a-contact 123a-1 and the disconnector auxiliary b-contact 123b-1 are provided. And are in the open state, the input sections 10a and 10b both output the L signal, the exclusive OR gate 21 is not established, and the L signal is output.
The output of the inverter gate 61 becomes the H signal. This time,
Since the busbar selection disconnector 107 is being inspected, the pushbutton switch corresponding to the busbar selection disconnector 107 is "ON", so that the input unit 14B outputs the H signal and the inhibition input of the AND gate 51. Becomes an L signal, the AND gate 51 outputs an L signal, the output means 3 does not output an abnormality detection signal, the monitoring operation of the disconnector contact information monitoring circuit is normally permitted, and monitoring failure does not occur.

【００３６】また、母線選択断路器１０７が「入」でＡ
端回線１０４が甲母線１０１に接続され、母線選択断路
器１０７に対応する断路器補助ａ接点１２３ａ−１が閉
成し、母線選択断路器１０７に対応する断路器補助ｂ接
点１２３ｂ−１が開成している状態において、実機とリ
レー盤間のケーブル断線が起こると、入力部１０ａ，１
０ｂがＬ信号を出力し、イクスクルーシブオアゲート２
１が不成立となってＬ信号を出力し、インバータゲート
６１の出力はＨ信号となる。この時、母線選択断路器１
０７〜１１２の点検時でないことから、押し釦スイッチ
は「切」となっているので、入力部１４ＢはＬ信号を出
力し、アンドゲート５１の禁止入力はＨ信号となり、ア
ンドゲート５１がＨ信号を出力し、タイマ３３が起動
し、このタイマ３３の所定の限時動作経過後も、上記ア
ンドゲート３１のＨ信号の出力が継続していると、タイ
マ３３が異常信号を警報手段４に出力し、断路器接点情
報監視回路の監視動作は正常に禁止され、監視不良に至
らない。Further, when the busbar selection disconnector 107 is "ON", A
The end line 104 is connected to the instep bus 101, the disconnector auxiliary a contact 123a-1 corresponding to the busbar selection disconnector 107 is closed, and the disconnector auxiliary b contact 123b-1 corresponding to the busbar selection disconnector 107 is opened. If the cable breaks between the actual machine and the relay board in the operating state, the input parts 10a, 1
0b outputs L signal, exclusive or gate 2
When 1 is not satisfied, the L signal is output, and the output of the inverter gate 61 becomes the H signal. At this time, the busbar selection disconnector 1
Since the push button switch is "off" because it is not during inspection of 07 to 112, the input section 14B outputs the L signal, the inhibition input of the AND gate 51 becomes the H signal, and the AND gate 51 outputs the H signal. Is output, the timer 33 is activated, and if the H signal of the AND gate 31 continues to be output even after the elapse of a predetermined time-delayed operation of the timer 33, the timer 33 outputs an abnormal signal to the alarm means 4. , The monitoring operation of the disconnector contact information monitoring circuit is normally prohibited, and the monitoring failure does not occur.

【００３７】要するにこの実施例３では、図３に示すよ
うに、入力部１４Ｂ，１５Ｂと決定手段５Ａとが母線選
択断路器１０７〜１１２に対応して設けられる押し釦ス
イッチの「入」条件によって断路器接点情報監視回路の
監視動作を許容したり禁止するように構成したので、母
線選択断路器１０７〜１１２に対応して設けた押し釦ス
イッチの「入」条件をそのまま断路器接点情報監視回路
に利用する簡単な構造でありながら、Ａ端・Ｂ端・Ｃ端
回線１０４〜１０６の各回線ごとの監視が行え、母線選
択断路器１０７〜１１２の点検時において、点検を行う
母線選択断路器の主接点が中間位置になった場合でも、
出力手段３が異常検知信号を出力せず、断路器接点情報
監視回路が監視不良にならない。加えて、保護範囲の回
線に電力が供給されている場合には、断路器接点情報監
視回路が正常な監視動作を行うので、母線保護継電装置
による母線保護および系統分離の運用が常に適切に行え
る。In summary, in the third embodiment, as shown in FIG. 3, the input sections 14B and 15B and the determining means 5A are set according to the "ON" condition of the push button switches provided corresponding to the bus bar selection disconnectors 107-112. Since the monitoring operation of the disconnector contact information monitoring circuit is configured to be permitted or prohibited, the "ON" condition of the push button switch provided corresponding to the bus bar selection disconnectors 107 to 112 is directly maintained in the disconnector contact information monitoring circuit. Although it is a simple structure to be used for, the A-end / B-end / C-end lines 104-106 can be monitored for each line, and the busbar selection disconnectors 107-112 are inspected at the time of inspection. Even when the main contact of is in the middle position,
The output means 3 does not output the abnormality detection signal, and the disconnector contact information monitoring circuit does not fail in monitoring. In addition, when power is supplied to the line within the protection range, the disconnector contact information monitoring circuit performs normal monitoring operation, so busbar protection and system separation should always be properly operated by the busbar protection relay device. You can do it.

【００３８】実施例４（請求項５に対応）．図４は実施
例４の母線保護継電装置における断路器接点情報監視回
路を示す回路図である。この図４における点線は図５に
示す母線選択断路器１０９，１１０に関する断路器接点
情報監視回路構成要素としての入力部とイクスクルーシ
ブオアゲート、インバータゲート、オアゲートなどの図
示を省略したことを表す。図４において、この実施例４
の断路器接点情報監視回路は、実施例３におけるＡ端・
Ｂ端・Ｃ端回線１０４〜１０６の各回線ごとに設けられ
た押し釦スイッチの開閉条件に代えて、Ａ端・Ｂ端・Ｃ
端回線１０４〜１０６の全部に対し統一して設けられた
押し釦スイッチの「入」条件を用いたことに特徴があ
る。具体的には、実施例３における入力部１４Ｂ，１５
Ｂに代替し、入力手段１Ｄが母線選択断路器１０７〜１
１２に対し１つ設けられた押し釦スイッチの「入」条件
を受信する入力部１６を有し、決定手段５Ａが入力部１
６での押し釦スイッチ「入」条件を組み合わせ手段２の
出力に取り込む。押し釦スイッチは、実施例３の押し釦
スイッチと同様にロック付き構造になっている。Embodiment 4 (corresponding to claim 5). FIG. 4 is a circuit diagram showing a disconnector contact information monitoring circuit in the busbar protective relay device according to the fourth embodiment. Dotted lines in FIG. 4 indicate that the input parts as the disconnector contact information monitoring circuit constituent elements for the busbar selection disconnectors 109 and 110 shown in FIG. 5 and the exclusive OR gate, the inverter gate, the OR gate, etc. are omitted. . In FIG.
The disconnector contact information monitoring circuit of No. A is the end A in the third embodiment.
Instead of the opening / closing conditions of the push button switch provided for each of the B-end / C-end lines 104 to 106, the A-end / B-end / C
It is characterized in that the “ON” condition of the push button switch provided uniformly for all of the end lines 104 to 106 is used. Specifically, the input units 14B and 15 in the third embodiment
Instead of B, the input means 1D has a bus bar selection disconnector 107-1.
12 has an input unit 16 for receiving the “ON” condition of the push button switch, and the determination unit 5A has the input unit 1
The push-button switch “ON” condition in 6 is taken into the output of the combination means 2. The push button switch has a lock structure like the push button switch of the third embodiment.

【００３９】この実施例４の動作について説明する。母
線選択断路器１０７が「入」でＡ端回線１０４が甲母線
１０１に接続された状態において、母線選択断路器１０
７に対応する断路器補助ａ接点１２３ａ−１が閉成して
いることによって入力部１０ａがＨ信号を出力し、母線
選択断路器１０７に対応する断路器補助ｂ接点１２３ｂ
−１が開成していることによって入力部１０ｂがＬ信号
を出力していると、イクスクルーシブオアゲート２１が
成立してＨ信号を出力し、インバータゲート６１の出力
はＬ信号となる。よって、この時、入力部１６が第１断
路器ロック情報としての押し釦スイッチの開閉条件を表
すＨ信号またはＬ信号を出力しても、決定手段５Ａのア
ンドゲート５１はＬ信号を出力手段３に出力する。つま
り、決定手段５Ａは入力部１０ａ，１０ｂの出力レベル
（一方がＨ信号で他方がＬ信号）が不一致と正常なとき
は、入力部１４の出力レベル（Ｈ信号またはＬ信号）に
無関係に、断路器接点受信回路が正常と判断する。The operation of the fourth embodiment will be described. When the busbar selection disconnector 107 is “ON” and the A-end line 104 is connected to the instep busbar 101, the busbar selection disconnector 10
The disconnector auxiliary a-contact 123a-1 corresponding to No. 7 is closed so that the input unit 10a outputs the H signal, and the disconnector auxiliary-b contact 123b corresponding to the bus selection disconnector 107.
When the input unit 10b outputs the L signal due to -1 being opened, the exclusive OR gate 21 is established to output the H signal, and the output of the inverter gate 61 becomes the L signal. Therefore, at this time, even if the input unit 16 outputs the H signal or the L signal indicating the opening / closing condition of the push button switch as the first disconnector lock information, the AND gate 51 of the determining unit 5A outputs the L signal. Output to. That is, when the output levels of the input units 10a and 10b (one of which is the H signal and the other of which is the L signal) do not match and the output levels of the input units 10a and 10b are normal, regardless of the output level of the input unit 14 (the H signal or the L signal), The disconnector contact receiving circuit is judged to be normal.

【００４０】次に、母線選択断路器１０７の点検時にお
いて、同母線選択断路器１０７の主接点が中間位置にな
った場合、断路器補助ａ接点１２３ａ−１と断路器補助
ｂ接点１２３ｂ−１とが共に開成した状態となり、入力
部１０ａ，１０ｂが共にＬ信号を出力し、イクスクルー
シブオアゲート２１が不成立となってＬ信号を出力し、
インバータゲート６１の出力はＨ信号となる。この時、
母線選択断路器１０７の点検時ということから、押し釦
スイッチは「入」となっているので、入力部１６がＨ信
号を出力し、アンドゲート５１の禁止入力はＬ信号とな
り、アンドゲート５１はＬ信号を出力し、出力手段３が
異常検知信号を出力せず断路器接点情報監視回路の監視
動作は正常に許容され、監視不良に至らない。Next, when the main contact of the bus bar selection disconnecting switch 107 is in the intermediate position during inspection of the bus bar selecting disconnecting switch 107, the disconnecting switch auxiliary a contact 123a-1 and the disconnecting switch auxiliary b contact 123b-1. And are in the open state, the input sections 10a and 10b both output the L signal, the exclusive OR gate 21 is not established, and the L signal is output.
The output of the inverter gate 61 becomes the H signal. This time,
Since the push button switch is "ON" since the bus bar selection disconnector 107 is being inspected, the input unit 16 outputs the H signal, the prohibition input of the AND gate 51 becomes the L signal, and the AND gate 51 The L signal is output, the output means 3 does not output the abnormality detection signal, the monitoring operation of the disconnector contact information monitoring circuit is normally permitted, and monitoring failure does not occur.

【００４１】また、母線選択断路器１０７が「入」でＡ
端回線１０４が甲母線１０１に接続され、母線選択断路
器１０７に対応する断路器補助ａ接点１２３ａ−１が閉
成し、母線選択断路器１０７に対応する断路器補助ｂ接
点１２３ｂ−１が開成している状態において、実機とリ
レー盤間のケーブル断線が起こると、入力部１０ａ，１
０ｂがＬ信号を出力し、イクスクルーシブオアゲート２
１が不成立となってＬ信号を出力し、インバータゲート
６１の出力はＨ信号となる。この時、母線選択断路器１
０７〜１１２の点検時でないことから、押し釦スイッチ
は「切」となっているので、入力部１６はＬ信号を出力
し、アンドゲート５１の禁止入力はＨ信号となり、アン
ドゲート５１がＨ信号を出力し、タイマ３３が起動し、
このタイマ３３の所定の限時動作経過後も、上記アンド
ゲート３１のＨ信号の出力が継続していると、タイマ３
３が異常信号を警報手段４に出力し、断路器接点情報監
視回路の監視動作は正常に禁止され、監視不良に至らな
い。Further, when the bus bar selection disconnector 107 is "ON", A
The end line 104 is connected to the instep bus 101, the disconnector auxiliary a contact 123a-1 corresponding to the busbar selection disconnector 107 is closed, and the disconnector auxiliary b contact 123b-1 corresponding to the busbar selection disconnector 107 is opened. If the cable breaks between the actual machine and the relay board in the operating state, the input parts 10a, 1
0b outputs L signal, exclusive or gate 2
When 1 is not satisfied, the L signal is output, and the output of the inverter gate 61 becomes the H signal. At this time, the busbar selection disconnector 1
Since the push button switch is "off" because it is not during inspection of 07 to 112, the input unit 16 outputs the L signal, the inhibition input of the AND gate 51 becomes the H signal, and the AND gate 51 outputs the H signal. Is output, the timer 33 is started,
If the output of the H signal from the AND gate 31 continues even after the elapse of the predetermined time-delayed operation of the timer 33, the timer 3
3 outputs an abnormal signal to the alarm means 4, the monitoring operation of the disconnector contact information monitoring circuit is normally prohibited, and the monitoring failure does not occur.

【００４２】要するにこの実施例４では、図４に示すよ
うに、入力部１６と決定手段５ＡとがＡ端・Ｂ端・Ｃ端
回線１０４〜１０６の全部に対し統一して設けられる押
し釦スイッチの「入」条件によって断路器接点情報監視
回路の監視動作を許容したり禁止するように構成したの
で、入力部１６が最少数で回路構成が簡略でき、押し釦
スイッチの「入」条件をそのまま断路器接点情報監視回
路に利用する簡単な構造でありながら、Ａ端・Ｂ端・Ｃ
端回線１０４〜１０６の各回線ごとの監視が行え、母線
選択断路器１０７〜１１２の点検時において、点検を行
う母線選択断路器の主接点が中間位置になった場合で
も、出力手段３が異常検知信号を出力せず、断路器接点
情報監視回路が監視不良にならない。加えて、保護範囲
の回線に電力が供給されている場合には、断路器接点情
報監視回路が正常な監視動作を行うので、母線保護継電
装置による母線保護および系統分離の運用が常に適切に
行える。In short, in the fourth embodiment, as shown in FIG. 4, the push button switch in which the input section 16 and the determining means 5A are provided integrally for all of the A-end / B-end / C-end lines 104 to 106. Since the monitoring operation of the disconnector contact point information monitoring circuit is configured to be permitted or prohibited depending on the "ON" condition of, the circuit configuration can be simplified with the minimum number of input units 16 and the "ON" condition of the push button switch can be maintained. Although it is a simple structure used for disconnector contact information monitoring circuit,
It is possible to monitor each of the end lines 104 to 106, and at the time of inspecting the bus bar selection disconnectors 107 to 112, even if the main contact of the bus line selection disconnector to be inspected is in the intermediate position, the output means 3 is abnormal. The detection signal is not output and the disconnector contact information monitoring circuit does not fail to monitor. In addition, when power is supplied to the line within the protection range, the disconnector contact information monitoring circuit performs normal monitoring operation, so busbar protection and system separation should always be properly operated by the busbar protection relay device. You can do it.

【００４３】なお、上記各実施例１〜４では母線選択断
路器１０７と回線しゃ断器１１３とついて説明したが、
母線選択断路器１０８と回線しゃ断器１１３とについ
て、母線選択断路器１１１と回線しゃ断器１１５とにつ
いて、母線選択断路器１１２と回線しゃ断器１１５とに
ついても同様の働きをすることは明らかであろう。ま
た、上記のような断路器接点情報監視回路が母線に接続
された回線全部に設けられることは勿論である。図１乃
至図８において、母線選択断路器１０７〜１１２、回線
しゃ断器１１３〜１１５、入力部１２３，１２５，１２
９，１３１、出力部１２４，１２６，１３０，１３２、
入力手段１，１Ａ〜１Ｄには、それぞれの関連性を明確
にするために、日本電機工業会が定めた制御器具番号の
規定；ＪＥＭ１０９０中の例えば８９、５２などの器具
番号とこれらの器具番号にＡ，Ｂ，ａ，ｂなどの英文字
および１，２，３などの算用数字を記してある。図１乃
至図４および図８において、入力部１０ａ，１１ａ，１
２ａ，１３ａに付記した器具番号と英文字および算用数
字は当該入力部がａ接点情報を受信するものであること
を表わし、入力部１０ｂ，１１ｂ，１２ｂ，１３ｂに付
記した器具番号と英文字と算用数字および上のバーは当
該入力部がｂ接点情報を受信するものであることを表わ
す。Although the bus bar selection disconnecting switch 107 and the line breaker 113 have been described in the first to fourth embodiments,
It will be apparent that the busbar selection disconnector 108 and the line breaker 113, the busbar selection disconnector 111 and the line breaker 115, and the busbar selection disconnector 112 and the line breaker 115 have similar functions. . Further, it goes without saying that the disconnector contact information monitoring circuit as described above is provided in all the lines connected to the busbar. 1 to 8, the busbar selection disconnectors 107-112, the line breakers 113-115, the input units 123, 125, 12
9, 131, output units 124, 126, 130, 132,
For the input means 1 and 1A to 1D, in order to clarify the relationship between them, the regulation of control instrument numbers established by the Japan Electrical Manufacturers'Association; instrument numbers such as 89 and 52 in JEM1090 and these instrument numbers. The alphabetical characters A, B, a, b, etc. and the arithmetic numerals 1, 2, 3, etc. are shown in FIG. 1 to 4 and 8, the input units 10a, 11a, 1
The instrument numbers and English letters and arithmetic numerals added to 2a and 13a indicate that the input unit receives the contact information a, and the instrument numbers and English letters added to the input units 10b, 11b, 12b and 13b. The arithmetic number and the bar above indicate that the input section receives the b-contact information.

【００４４】[0044]

【発明の効果】以上のように、第１の発明によれば、回
線しゃ断器の主接点の開閉条件によって、断路器接点情
報監視回路の監視動作を許容したり禁止する構成とした
ので、回線しゃ断器の主接点の開閉条件を断路器接点情
報監視回路に利用する簡単な構造でありながら、母線選
択断路器の点検時において、点検を行う母線選択断路器
の主接点が中間位置になった場合でも、異常検知信号を
出力せず、正常な監視動作を行うことができる。加え
て、保護範囲の回線に電力が供給されている場合も正常
な監視動作を行うので、母線保護継電装置による母線保
護および系統分離の運用が常に適切に行えるという効果
がある。As described above, according to the first aspect of the present invention, since the switching operation of the disconnector contact information monitoring circuit is permitted or prohibited depending on the opening / closing condition of the main contact of the circuit breaker, The main contact of the busbar selection disconnector to be inspected is in the intermediate position while the busbar selection disconnector is being inspected even though it has a simple structure that uses the opening / closing conditions of the main contact of the circuit breaker for the disconnector contact information monitoring circuit. Even in this case, a normal monitoring operation can be performed without outputting the abnormality detection signal. In addition, since normal monitoring operation is performed even when power is supplied to the line within the protection range, there is an effect that busbar protection and system separation can always be appropriately operated by the busbar protection relay device.

【００４５】第２の発明によれば、回線しゃ断器の主接
点の開閉条件中の「入」条件によって、断路器接点情報
監視回路の監視動作を許容したり禁止する構成としたの
で、回線しゃ断器の主接点の開閉条件中の「入」条件を
そのまま断路器接点情報監視回路に利用する簡単な構造
でありながら、母線選択断路器の点検時において、点検
を行う母線選択断路器の主接点が中間位置になった場合
でも、異常検知信号を出力せず、正常な監視動作を行う
ことができる。加えて、保護範囲の回線に電力が供給さ
れている場合も正常な監視動作を行うので、母線保護継
電装置による母線保護および系統分離の運用が常に適切
に行えるという効果がある。According to the second aspect of the invention, since the monitoring operation of the disconnector contact information monitoring circuit is permitted or prohibited depending on the "ON" condition in the opening / closing condition of the main contact of the circuit breaker, the circuit disconnection is performed. The main contact of the busbar selection disconnector to be inspected at the time of inspection of the busbar selection disconnector, though it is a simple structure that uses the "ON" condition of the main contact opening and closing conditions of the mains switch as it is for the disconnector contact information monitoring circuit. Even when is at the intermediate position, the abnormality detection signal is not output and the normal monitoring operation can be performed. In addition, since normal monitoring operation is performed even when power is supplied to the line within the protection range, there is an effect that busbar protection and system separation can always be appropriately operated by the busbar protection relay device.

【００４６】第３の発明によれば、回線しゃ断器の主接
点の開閉条件中の「切」条件によって、断路器接点情報
監視回路の監視動作を許容したり禁止する構成としたの
で、回線しゃ断器の主接点の開閉条件中の「切」条件を
図外のインバータゲートで反転して利用する簡単な構造
でありながら、母線選択断路器の点検時において、点検
を行う母線選択断路器の主接点が中間位置になった場合
でも、異常検知信号を出力せず、正常な監視動作を行う
ことができる。加えて、保護範囲の回線に電力が供給さ
れている場合も断路器接点情報監視回路が正常な監視動
作を行うので、母線保護継電装置による母線保護および
系統分離の運用が常に適切に行えるという効果がある。According to the third aspect of the invention, since the monitoring operation of the disconnector contact information monitoring circuit is permitted or prohibited depending on the "off" condition in the opening / closing conditions of the main contact of the circuit breaker, the circuit disconnection is performed. The main structure of the busbar selection disconnector to be inspected at the time of inspecting the busbar selection disconnector is a simple structure in which the "off" condition of the main contact opening / closing conditions is inverted and used by the inverter gate (not shown). Even when the contact is in the intermediate position, the abnormality detection signal is not output and the normal monitoring operation can be performed. In addition, the disconnector contact information monitoring circuit performs normal monitoring operation even when power is being supplied to the line within the protection range, so busbar protection and system isolation can always be properly operated by the busbar protection relay device. effective.

【００４７】第４の発明によれば、複数の母線選択断路
器に対応して設けられ母線選択断路器の主接点の切動作
に応じオン操作される押し釦スイッチの「入」条件によ
って、断路器接点情報監視回路の監視動作を許容したり
禁止する構成としたので、母線選択断路器に対応して設
けた押し釦スイッチの「入」条件をそのまま断路器接点
情報監視回路に利用する簡単な構造でありながら、各回
線ごとの監視が行え、母線選択断路器の点検時におい
て、点検を行う母線選択断路器の主接点が中間位置にな
った場合でも、異常検知信号を出力せず、正常な監視動
作を行うことができる。加えて、保護範囲の回線に電力
が供給されている場合も正常な監視動作を行うので、母
線保護継電装置による母線保護および系統分離の運用が
常に適切に行えるという効果がある。According to the fourth aspect of the invention, the disconnection is performed by the "ON" condition of the push button switch which is provided corresponding to the plurality of busbar selection disconnectors and is turned on in response to the disconnection operation of the main contacts of the busbar selection disconnectors. Since the monitoring operation of the switch contact information monitoring circuit is configured to be permitted or prohibited, it is easy to use the "ON" condition of the push button switch provided for the bus bar selection disconnector as it is for the disconnector contact information monitoring circuit. Despite the structure, each line can be monitored, and at the time of inspecting the busbar selection disconnector, even if the main contact of the busbar selection disconnector to be inspected is in the intermediate position, no abnormality detection signal is output and normal It is possible to perform various monitoring operations. In addition, since normal monitoring operation is performed even when power is supplied to the line within the protection range, there is an effect that busbar protection and system separation can always be appropriately operated by the busbar protection relay device.

【００４８】第５の発明によれば、複数の母線選択断路
器に統一して設けられ母線選択断路器の主接点の切動作
に応じオン操作される押し釦スイッチの「入」条件によ
って、断路器接点情報監視回路の監視動作を許容したり
禁止する構成としたので、入力手段の回路構成が構成要
素を最少数とする簡略化でき、押し釦スイッチの「入」
条件をそのまま断路器接点情報監視回路に利用する簡単
な構造でありながら、各回線ごとの監視が行え、母線選
択断路器の点検時において、点検を行う母線選択断路器
の主接点が中間位置になった場合でも、異常検知信号を
出力せず、正常な監視動作を行うことができる。加え
て、保護範囲の回線に電力が供給されている場合も正常
な監視動作を行うので、母線保護継電装置による母線保
護および系統分離の運用が常に適切に行えるという効果
がある。According to the fifth aspect of the invention, the disconnection is established by the "ON" condition of the push-button switch which is provided integrally with the plurality of busbar selection disconnectors and is turned on in response to the disconnection operation of the main contact of the busbar selection disconnector. Since the monitoring operation of the instrument contact information monitoring circuit is allowed or prohibited, the circuit configuration of the input means can be simplified with the minimum number of components, and the push button switch "ON"
Despite the simple structure of using the conditions as they are for the disconnector contact information monitoring circuit, each line can be monitored and the main contact of the busbar selection disconnector to be inspected at the intermediate position when inspecting the busbar disconnector. Even if it becomes, normal monitoring operation can be performed without outputting the abnormality detection signal. In addition, since normal monitoring operation is performed even when power is supplied to the line within the protection range, there is an effect that busbar protection and system separation can always be appropriately operated by the busbar protection relay device.

【図面の簡単な説明】[Brief description of drawings]

【図１】 実施例１の母線保護継電装置に使用する断路
器接点情報監視回路を示す回路図である。FIG. 1 is a circuit diagram showing a disconnector contact information monitoring circuit used in a busbar protective relay device according to a first embodiment.

【図２】 実施例２の母線保護継電装置に使用する断路
器接点情報監視回路を示す回路図である。FIG. 2 is a circuit diagram showing a disconnector contact information monitoring circuit used in the busbar protective relay device according to the second embodiment.

【図３】 実施例３の母線保護継電装置に使用する断路
器接点情報監視回路を示す回路図である。FIG. 3 is a circuit diagram showing a disconnector contact information monitoring circuit used in a busbar protective relay device according to a third embodiment.

【図４】 実施例４の母線保護継電装置に使用する断路
器接点情報監視回路を示す回路図である。FIG. 4 is a circuit diagram showing a disconnector contact information monitoring circuit used in a busbar protective relay device according to a fourth embodiment.

【図５】 一般的な標準二重母線方式による母線保護継
電装置を示す回路図である。FIG. 5 is a circuit diagram showing a busbar protection relay device according to a general standard double busbar system.

【図６】 一般的な母線保護継電装置に使用する断路器
接点受信回路を示す回路図である。FIG. 6 is a circuit diagram showing a disconnector contact receiving circuit used in a general busbar protection relay device.

【図７】 一般的な母線保護継電装置に使用するしゃ断
器接点受信回路を示す回路図である。FIG. 7 is a circuit diagram showing a circuit breaker contact reception circuit used in a general busbar protection relay device.

【図８】 従来の母線保護継電装置に使用する断路器接
点情報監視回路を示す回路図である。FIG. 8 is a circuit diagram showing a disconnector contact information monitoring circuit used in a conventional busbar protection relay device.

【符号の説明】[Explanation of symbols]

１，１Ａ〜１Ｄ 入力手段、２ 組み合わせ手段、３出
力手段、５，５Ａ 決定手段、１０ａ，１０ｂ，１１
ａ，１１ｂ，１２ａ，１２ｂ，１３ａ，１３ｂ母線選択
断路器の開閉条件を入力するための入力部、１４，１４
Ａ，１５，１５Ａ 回線しゃ断器の開閉条件を入力する
ための入力部、１４Ｂ，１５Ｂ 複数の母線選択断路器
に対応して設けられる押し釦スイッチの開閉条件を入力
するための入力部、１６ 複数の母線選択断路器に統一
して設けられる押し釦スイッチの開閉条件を入力するた
めの入力部、１０１ 甲母線、１０２ 乙母線、１０４
Ａ端回線、１０５ Ｂ端回線、１０６ Ｃ端回線、１
０７〜１１２ 母線選択断路器、１１３〜１１５ 回線
しゃ断器、１１９ 甲母線保護継電器、１２０ 乙母線
保護継電器。1, 1A to 1D input means, 2 combination means, 3 output means, 5, 5A determination means, 10a, 10b, 11
a, 11b, 12a, 12b, 13a, 13b Input section for inputting switching conditions of the busbar selection disconnecting switch, 14, 14
A, 15, 15A Input unit for inputting switching conditions of the circuit breaker, 14B, 15B Input unit for inputting switching conditions of push button switches provided corresponding to a plurality of bus bar selection disconnectors, 16 plural Input unit for inputting the opening / closing conditions of the push button switch which is integrally provided for the busbar selection disconnecting switch, 101 Kobusen, 102 Otobus, 104
A end line, 105 B end line, 106 C end line, 1
07-112 busbar selective disconnecting switch, 113-115 circuit breaker, 119 Ko-bus protection relay, 120 Otsubus protection relay.

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 回線しゃ断器を有する回線を電力系統の
母線に接続する母線選択断路器における主接点の開閉に
伴い開閉する断路器補助接点の開閉条件の組み合わせに
よって断路器接点情報を監視する断路器接点情報監視回
路を備えた母線保護継電装置において、 回線しゃ断器における主接点の開閉に伴い開閉するしゃ
断器補助接点の開閉条件を受け取る入力手段と、 この入力手段で受け取ったしゃ断器補助接点の開閉条件
を上記断路器補助接点の開閉条件の組み合わせに取り込
むことによって上記断路器接点情報監視回路の監視動作
を許可または禁止のいずれかに決定する決定手段と、を
備えたことを特徴とする母線保護継電装置。1. A disconnector for monitoring disconnector contact information by a combination of opening / closing conditions of a disconnector auxiliary contact that opens / closes with the opening / closing of a main contact in a busbar selection disconnector that connects a line having a line breaker to a busbar of a power system. In a busbar protective relay device equipped with a circuit contact information monitoring circuit, input means for receiving the opening and closing conditions of the circuit breaker auxiliary contact that opens and closes with the opening and closing of the main contact of the circuit breaker, and the circuit breaker auxiliary contact received by this input means. Determining means for determining whether the monitoring operation of the disconnector contact information monitoring circuit is permitted or prohibited by incorporating the switching condition of 1. into the combination of the opening and closing conditions of the disconnector auxiliary contact. Busbar protection relay device. 【請求項２】 上記入力手段に回線しゃ断器における主
接点の開閉と同じに開閉するしゃ断器補助ａ接点の閉条
件を受け取る入力部を設け、上記決定手段に入力部で受
け取ったしゃ断器補助ａ接点の閉条件を上記断路器補助
接点の開閉条件の組み合わせに取り込む決定部を設けた
ことを特徴とする請求項第１項記載の母線保護継電装
置。2. The input means is provided with an input section for receiving a closing condition of a circuit breaker auxiliary a contact that opens and closes in the same manner as the opening and closing of a main contact in a circuit breaker, and the determining means has a circuit breaker auxiliary a received by the input section. The busbar protection relay device according to claim 1, further comprising a determining unit that takes in a closing condition of the contact into a combination of opening and closing conditions of the disconnector auxiliary contact. 【請求項３】 上記入力手段に回線しゃ断器における主
接点の開閉と逆に開閉するしゃ断器補助ｂ接点の開条件
を受け取る入力部を設け、上記決定手段に入力部で受け
取ったしゃ断器補助ｂ接点の開条件を上記断路器補助接
点の開閉条件の組み合わせに取り込む決定部を設けたこ
とを特徴とする請求項第１項記載の母線保護継電装置。3. The input means is provided with an input section for receiving an opening condition of a circuit breaker auxiliary b contact that opens and closes in reverse to the opening and closing of a main contact of the circuit breaker, and the determining means has a circuit breaker auxiliary b received by the input section. The busbar protective relay device according to claim 1, further comprising a determination unit that takes in an opening condition of the contact into a combination of opening and closing conditions of the disconnector auxiliary contact. 【請求項４】 複数の回線を電力系統の母線に接続する
母線選択断路器における主接点の開閉に伴い開閉する断
路器補助接点の開閉条件の組み合わせによって断路器接
点情報を監視する断路器接点情報監視回路を備えた母線
保護継電装置において、 複数の母線選択断路器に対応して設けられ母線選択断路
器の主接点の切動作に応じオン操作される押し釦スイッ
チの「入」条件を受け取る入力手段と、 この入力手段で受け取った押し釦スイッチの「入」条件
を上記断路器補助接点の開閉条件の組み合わせに取り込
むことによって上記断路器接点情報監視回路の監視動作
を許可または禁止のいずれかに決定する決定手段と、を
備えたことを特徴とする母線保護継電装置。4. The disconnector contact information for monitoring the disconnector contact information by a combination of opening / closing conditions of a disconnector auxiliary contact that opens / closes according to opening / closing of a main contact in a busbar disconnecting disconnector that connects a plurality of lines to a power system busbar. In a busbar protection relay device equipped with a monitoring circuit, it receives the "ON" condition of a push button switch that is provided corresponding to a plurality of busbar selection disconnectors and is turned on in response to the disconnection operation of the main contacts of the busbar selection disconnectors. The monitoring operation of the disconnector contact information monitoring circuit is either permitted or prohibited by incorporating the "ON" condition of the input button and the push-button switch received by the input device into the combination of the opening / closing conditions of the disconnector auxiliary contact. The busbar protection relay device, comprising: 【請求項５】 複数の回線を電力系統の母線に接続する
母線選択断路器における主接点の開閉に伴い開閉する断
路器補助接点の開閉条件の組み合わせによって断路器接
点情報を監視する断路器接点情報監視回路を備えた母線
保護継電装置において、 複数の母線選択断路器に統一して設けられ母線選択断路
器の主接点の切動作に応じオン操作される押し釦スイッ
チの「入」条件を受け取る入力手段と、 この入力手段で受け取った押し釦スイッチの「入」条件
を上記断路器補助接点の開閉条件の組み合わせに取り込
むことによって上記断路器接点情報監視回路の監視動作
を許可または禁止のいずれかに決定する決定手段と、を
備えたことを特徴とする母線保護継電装置。5. The disconnector contact information for monitoring the disconnector contact information by a combination of opening / closing conditions of a disconnector auxiliary contact that opens / closes with opening / closing of a main contact in a busbar selective disconnector that connects a plurality of lines to a power system busbar. In a busbar protection relay device with a monitoring circuit, it receives the "ON" condition of a push button switch that is provided in a unified manner for a plurality of busbar selection disconnectors and is turned on according to the disconnection operation of the main contact of the busbar selection disconnector. The monitoring operation of the disconnector contact information monitoring circuit is either permitted or prohibited by incorporating the "ON" condition of the input button and the push-button switch received by the input device into the combination of the opening / closing conditions of the disconnector auxiliary contact. The busbar protection relay device, comprising: