JPH0214283Y2 - - Google Patents

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Publication number
JPH0214283Y2
JPH0214283Y2 JP10015381U JP10015381U JPH0214283Y2 JP H0214283 Y2 JPH0214283 Y2 JP H0214283Y2 JP 10015381 U JP10015381 U JP 10015381U JP 10015381 U JP10015381 U JP 10015381U JP H0214283 Y2 JPH0214283 Y2 JP H0214283Y2
Authority
JP
Japan
Prior art keywords
voltage
power
protector
disconnector
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP10015381U
Other languages
Japanese (ja)
Other versions
JPS586543U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP10015381U priority Critical patent/JPS586543U/en
Publication of JPS586543U publication Critical patent/JPS586543U/en
Application granted granted Critical
Publication of JPH0214283Y2 publication Critical patent/JPH0214283Y2/ja
Granted legal-status Critical Current

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  • Supply And Distribution Of Alternating Current (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

【考案の詳細な説明】 〔考案の目的〕 (産業上の利用分野) 本考案は配電保護装置に係り、特に送電力しや
断保護手段を備えた配電保護装置の改良に関す
る。
[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a power distribution protection device, and particularly relates to an improvement of a power distribution protection device equipped with power transmission cutoff protection means.

(従来の技術) 配電系統において、停電することなしに安定し
た電力を供給する方式の1つに、ネツトワーク配
電方式がある。この配電方式は、第1図に示すよ
うに1次側の配電用き電線を複数にすると共に、
この各き電線を受電用断路器、ネツトワーク変圧
器、保護装置を介してネツトワーク母線、あるい
はケーブルにより並列接続したものである。この
保護装置は、ネツトワークプロテクタと呼ばれ、
無電圧投入、差電圧投入、送電力しや断の3つの
特性により、自動運転を行う機能を有している。
(Prior Art) In a power distribution system, one of the methods for supplying stable power without power outages is a network power distribution method. This power distribution system uses multiple power distribution feeders on the primary side as shown in Figure 1, and
These feeder lines are connected in parallel via a power receiving disconnector, a network transformer, a protection device, a network busbar, or a cable. This protection device is called a network protector.
It has the ability to perform automatic operation due to three characteristics: no-voltage power-on, differential voltage power-on, and transmission power cut-off.

ここで無電圧投入特性とは、1次き電線が充電
され、ネツトワーク回路が無電圧の場合、プロテ
クタしや断器が自動投入される特性である。ま
た、差電圧投入特性とは、ネツトワーク回路が充
電され、任意のプロテクタしや断器が引外されて
いる場合、1次き電線側の電圧とネツトワーク回
路側の電圧差、及び両電圧の位相差を検出し、条
件を満たした時にプロテクタしや断器が自動投入
される特性である。
Here, the no-voltage closing characteristic is a characteristic in which the protector and the disconnector are automatically closed when the primary feeder is charged and the network circuit is without voltage. In addition, the differential voltage input characteristic refers to the voltage difference between the voltage on the primary feeder side and the network circuit side, and the voltage difference between the two voltages when the network circuit is charged and any protector or disconnector is tripped. It is a characteristic that the protector and disconnector are automatically turned on when the phase difference between the two is detected and the conditions are met.

さらに、逆電力しや断特性とは、1次き電線の
事故により給電所のしや断器が引はずしされた場
合や、作業停電等でき電線が停止した場合、ネツ
トワーク回路から1次き電線側へ逆流する電流を
検出して、プロテクタしや断器が自動引はずしさ
れる特性である。
Furthermore, the reverse power failure characteristic refers to the ability of the primary feeder to This is a characteristic in which the protector and disconnector are automatically tripped by detecting the current flowing back to the wire side.

第1図は、1次き電線が3回線であるスポツト
ネツトワーク配電装置の概略単線結線図である。
すなわち電源変電所の送り出ししや断器1を介し
て、それぞれ1次き電線2a,2b,2cにそれ
ぞれ受電用断路器3a,3b,3c、ネツトワー
ク変圧器4a,4b,4c、ネツトワークプロテ
クタ5a,5b,5cが接続され、このプロテク
タの2次側はネツトワーク母線6で並列接続さ
れ、負荷しや断装置7a・・7nを介して図示し
ない各負荷に接続されている。
FIG. 1 is a schematic single-line diagram of a spot network power distribution system having three primary feeder lines.
That is, the power receiving disconnectors 3a, 3b, 3c, network transformers 4a, 4b, 4c, and network protectors are connected to the primary feeder lines 2a, 2b, 2c through the sending and disconnecting switches 1 of the power substation, respectively. 5a, 5b, and 5c are connected, and the secondary side of this protector is connected in parallel through a network bus 6, and is connected to each load (not shown) via load disconnection devices 7a, . . ., 7n.

第2図はネツトワークプロテクタ5a〜5cの
概要を示す単線結線図である。これはネツトワー
ク変圧器4の2次側に接続され、プロテクタヒユ
ーズ8、プロテクタしや断器9、ネツトワーク継
電装置である電力方向継電器10、位相継電器1
1とこれらの動作入力を得るための変流器12、
ならびに必要に応じて補助変圧器13、ネツトワ
ーク変圧器2次電圧を検出する電圧継電器18に
より構成されている。
FIG. 2 is a single line diagram showing an outline of the network protectors 5a to 5c. This is connected to the secondary side of the network transformer 4, including a protector fuse 8, a protector shield disconnector 9, a power direction relay 10 which is a network relay device, and a phase relay 1.
1 and a current transformer 12 for obtaining these operating inputs,
It also includes an auxiliary transformer 13 and a voltage relay 18 for detecting the network transformer secondary voltage, if necessary.

第3図はプロテクタしや断器9の操作回路であ
り、電力方向継電器10の投入信号接点10aに
より投入コイルを励磁し、電力方向継電器10の
引はずし信号接点10b、変圧器内部事故故障接
点14、プロテクタヒユーズ8の故障接点15な
どの出力によりトリツプコイルを励磁してプロテ
クタしや断器9の投入・しや断を行う制御回路で
ある。また、電流コイル16cと電圧コイル16
dを有する補助継電器を備え、電流コイル16c
に引はずし電流が流れたときその接点16aによ
り電圧コイル16dが励磁され自己保持回路を形
成し、接点16bを開路して再投入をロツクす
る。押ボタンスイツチ17は自己保持回路を解除
して投入ロツクを解除するものである。
FIG. 3 shows an operating circuit for the protector and disconnector 9, in which the closing coil is excited by the closing signal contact 10a of the power direction relay 10, the trip signal contact 10b of the power direction relay 10, and the transformer internal fault contact 14. , is a control circuit that excites a trip coil using the output of the failure contact 15 of the protector fuse 8, etc., and closes and disconnects the protector and disconnector 9. In addition, the current coil 16c and the voltage coil 16
with an auxiliary relay having a current coil 16c.
When a trip current flows, the voltage coil 16d is excited by the contact 16a to form a self-holding circuit, and the contact 16b is opened to lock the re-opening. The pushbutton switch 17 is used to release the self-holding circuit and release the closing lock.

また、電圧継電器18は受電する系統電圧の有
無を図示しない表示回路でランプ表示するもので
ある。
Further, the voltage relay 18 uses a display circuit (not shown) to display a lamp indicating the presence or absence of a system voltage to be received.

(考案が解決しようとする課題) このように構成されたものにおいて、送電力し
や断特性による自動運転には、以下に述べる問題
を有している。
(Problems to be Solved by the Invention) In the device configured as described above, automatic operation due to power transmission cut-off characteristics has the following problems.

第3図において、プロテクタ側の故障、すなわ
ち変圧器内部故障接点14、プロテクタヒユーズ
断接点15により引きはずしが行われると自己保
持回路が形成され、故障原因を除去した後に保守
員の手動操作により押ボタンスイツチ17を開路
するまで投入回路はロツクされる。また、外部故
障により電力方向継電器の引きはずし信号接点1
0bにより引きはずしが行れた場合も同様に作用
する。
In Fig. 3, when a failure occurs on the protector side, that is, a trip occurs due to the transformer internal failure contact 14 or the protector fuse disconnection contact 15, a self-holding circuit is formed, and after the cause of the failure is removed, a maintenance worker manually operates the circuit to create a self-holding circuit. The closing circuit is locked until the button switch 17 is opened. In addition, due to an external failure, the power directional relay trip signal contact 1
The same effect occurs when tripping is performed by 0b.

しかしながらこのような方式において、プロテ
クタ回路側の故障のように、プロテクタ回路側で
なんらかの対策を行う必要がある場合には、再投
入防止、安全対策の意味から自己保持、投入ロツ
ク回路が必要であるが、逆電力しや断のように外
部事故においても投入ロツクされると保守員によ
る投入ロツク解除の操作が必要となりネツトワー
ク配電方式の特長である自動運転の特性がそこな
われる。
However, in this type of system, if some kind of countermeasure needs to be taken on the protector circuit side, such as in the case of a failure on the protector circuit side, a self-holding and closing lock circuit is required to prevent re-opening and as a safety measure. However, if the power supply is locked due to an external accident such as a reverse power failure, maintenance personnel must perform an operation to release the power supply lock, which impairs the automatic operation characteristic of the network power distribution system.

本考案は上記欠点を除去するためになされ、逆
電力しや断特性により引はずしされた際、1次き
電線側の無電圧を確認して、投入ロツク回路を自
動的に解除するようにして、ネツトワーク配電方
式の特徴を有効に活用することのできる配電保護
装置を提供することを目的とする。
The present invention has been developed to eliminate the above-mentioned drawbacks, and when the power supply is tripped due to the reverse power failure characteristics, it is configured to confirm that there is no voltage on the primary feeder side and automatically release the closing lock circuit. The object of the present invention is to provide a power distribution protection device that can effectively utilize the characteristics of a network power distribution system.

〔考案の構成〕[Structure of the idea]

(課題を解決するための手段と作用) 本考案は、上記目的を達成するために、逆電力
を検出してプロテクタしや断器を開放する逆電力
しや断保護手段を備えた配電保護装置において、
受電側の電圧の有無を検出する電圧検出手段と、
前記プロテクタしや断器が引きはずしされたとき
再投入を禁止する投入ロツク手段と、前記電圧検
出手段が無電圧を検出したとき投入ロツクを解除
する投入ロツク解除手段を設け逆電力しや断保護
手段によりプロテクタしや断器が引きはずしされ
たときは自動投入するように構成した配電保護装
置である。
(Means and effects for solving the problem) In order to achieve the above object, the present invention provides a power distribution protection device equipped with a reverse power cutoff protection means that detects reverse power and opens a protector or disconnector. In,
Voltage detection means for detecting the presence or absence of voltage on the power receiving side;
Reverse power failure protection is provided by providing a closing lock means for prohibiting re-closing when the protector or disconnector is tripped, and a closing lock release means for releasing the closing lock when the voltage detecting means detects no voltage. This is a power distribution protection device configured to automatically turn on when a protector or disconnector is tripped by means.

(実施例) 第4図に本考案の一実施例を示す。本考案にお
いては、補助継電器の電圧コイル16d、その補
助接点16a、手動解除用リセツト押ボタンスイ
ツチ17で成る自己保持回路と直列に、ネツトワ
ーク変圧器4の2次電圧検出用電圧継電器18の
補助接点18aを接続する。
(Example) FIG. 4 shows an example of the present invention. In the present invention, the auxiliary voltage relay 18 for detecting the secondary voltage of the network transformer 4 is connected in series with the self-holding circuit consisting of the voltage coil 16d of the auxiliary relay, its auxiliary contact 16a, and the reset pushbutton switch 17 for manual release. Connect contact 18a.

このように構成されたものにおいて、系統の送
電が停止して逆電力しや断引はずしが行なわれる
と、補助継電器16により自己保持回路が形成さ
れ、補助接点16bにより投入ロツクされる。一
方、1次き電線の送り出ししや断器1も解放され
るので、ネツトワーク変圧器4の2次側は無電圧
となる。このため電圧継電器18は無励磁とな
り、補助接点18aが開路し、自己保持回路が解
放され、投入ロツク回路も解除される。これによ
り系統の送電が再開されるとプロテクタしや断器
9は自動投入される。
In this structure, when power transmission in the system is stopped and reverse power is applied or disconnected, a self-holding circuit is formed by the auxiliary relay 16, and the auxiliary contact 16b is turned on and locked. On the other hand, since the feeder of the primary feeder wire and the disconnector 1 are also released, the secondary side of the network transformer 4 becomes voltage-free. Therefore, the voltage relay 18 becomes non-energized, the auxiliary contact 18a is opened, the self-holding circuit is released, and the closing lock circuit is also released. As a result, when power transmission in the grid is resumed, the protector and disconnector 9 are automatically turned on.

また、逆電力しや断によつてプロテクタしや断
器9の引きはずしが行われた場合に、電圧検出用
継電器の接点18aにより投入ロツクを行なうこ
とにより、ネツトワーク配電方式の特性のばらつ
きにより、他のスポツトネツトワークの該当する
系統のプロテクタしや断器の解放が遅れたとき、
他の建全系統の回り込み電源により、プロテクタ
しや断器9が再投入されるのを防止することがで
きる。
In addition, when the protector or disconnector 9 is tripped due to a reverse power failure, the contact 18a of the voltage detection relay is used to lock the power on, thereby eliminating the possibility of variations in the characteristics of the network power distribution system. , when there is a delay in releasing the protector or disconnection of the corresponding system in other spot networks,
It is possible to prevent the protector and the disconnector 9 from being turned on again due to the loop power from other construction systems.

なお、本実施例では、ネツトワーク変圧器4の
2次電圧の電圧検出継電器8により投入ロツクを
解除する例で示したが、限時継電器を使用しても
よく、また、本考案の要旨を変えることなく逆電
力しや断信号回路のみ、投入ロツク解除を行うよ
うにすることもできる。
In this embodiment, the closing lock is released by the voltage detection relay 8 of the secondary voltage of the network transformer 4, but a time-limited relay may also be used, and the gist of the present invention may be changed. It is also possible to release the closing lock only by the reverse power cutoff signal circuit.

〔考案の効果〕[Effect of idea]

以上述べたように本考案によれば、逆電力しや
断のような外部事故の場合には、ネツトワーク回
路側は保守員による投入ロツク解除の操作を行う
ことなく、ネツトワーク配電方式の特長である自
動運転の特性を有効に活用することのできる配電
保護装置を提供することができる。
As described above, according to the present invention, in the event of an external accident such as a reverse power outage, the network circuit side does not have to be operated by maintenance personnel to release the power-on lock. It is possible to provide a power distribution protection device that can effectively utilize the characteristics of automatic operation.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はスポツトネツトワーク配電装置の概略
単線結線図、第2図はネツトワークプロテクタの
概要図、第3図は従来のプロテクタしや断器制御
回路図、第4図は本考案の一実施例を示すプロテ
クタしや断器の制御回路である。 1……送り出ししや断器、4……ネツトワーク
変圧器、9……プロテクタしや断器、10……電
流方向継電器、11……位相継電器、16……補
助継電器、17……リセツト押ボタンスイツチ、
18……電圧継電器。
Figure 1 is a schematic single-line diagram of a spot network power distribution device, Figure 2 is a schematic diagram of a network protector, Figure 3 is a conventional protector disconnection control circuit diagram, and Figure 4 is an implementation of the present invention. This is a control circuit for a protector and disconnector as an example. 1... Sending switch and disconnector, 4... Network transformer, 9... Protector switch and disconnector, 10... Current direction relay, 11... Phase relay, 16... Auxiliary relay, 17... Reset push button switch,
18... Voltage relay.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 送電力を検出してプロテクタしや断器を開放す
る送電力しや断保護手段を備えた配電保護装置に
おいて、受電側の電圧の有無を検出する電圧検出
手段と、前記プロテクタしや断器が引きはずしさ
れたとき再投入を禁止する投入ロツク手段と、前
記電圧検出手段が無電圧を検出したとき投入ロツ
クを解除する投入ロツク解除手段を設けたことを
特徴とする配電保護装置。
In a power distribution protection device equipped with a power transmission shield or disconnection protection means that detects transmitted power and opens a protector or disconnector, the protector or disconnector includes a voltage detection means that detects the presence or absence of a voltage on a power receiving side, and A power distribution protection device comprising: a closing lock means for prohibiting re-closing when tripped; and a closing lock release means for releasing the closing lock when the voltage detecting means detects no voltage.
JP10015381U 1981-07-07 1981-07-07 power distribution protection device Granted JPS586543U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10015381U JPS586543U (en) 1981-07-07 1981-07-07 power distribution protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10015381U JPS586543U (en) 1981-07-07 1981-07-07 power distribution protection device

Publications (2)

Publication Number Publication Date
JPS586543U JPS586543U (en) 1983-01-17
JPH0214283Y2 true JPH0214283Y2 (en) 1990-04-18

Family

ID=29894858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10015381U Granted JPS586543U (en) 1981-07-07 1981-07-07 power distribution protection device

Country Status (1)

Country Link
JP (1) JPS586543U (en)

Also Published As

Publication number Publication date
JPS586543U (en) 1983-01-17

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