JPS63161810A - Protective relay - Google Patents
Protective relayInfo
- Publication number
- JPS63161810A JPS63161810A JP61306505A JP30650586A JPS63161810A JP S63161810 A JPS63161810 A JP S63161810A JP 61306505 A JP61306505 A JP 61306505A JP 30650586 A JP30650586 A JP 30650586A JP S63161810 A JPS63161810 A JP S63161810A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- monitoring
- protection device
- protection
- failure
- 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.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 13
- 230000007547 defect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 241000219198 Brassica Species 0.000 description 1
- 235000003351 Brassica cretica Nutrition 0.000 description 1
- 235000003343 Brassica rupestris Nutrition 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- QKSKPIVNLNLAAV-UHFFFAOYSA-N bis(2-chloroethyl) sulfide Chemical compound ClCCSCCCl QKSKPIVNLNLAAV-UHFFFAOYSA-N 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 235000010460 mustard Nutrition 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、保護機能を多重化し、夫々に常時監視回路を
有し、監視不良検出タイマロックとする保護継電装置に
関するものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a protective relay device in which protection functions are multiplexed, each having a constant monitoring circuit, and a monitoring failure detection timer lock. It is something.
（従来の技術）
超高圧電力系統の保護では、一般的に事故が系統に与え
る影響が大きく、確実に事故除去させるため、一つの保
護対象に対して主保護装置を２つ設置するとか主保護装
置と後備保護装置とする等保護を多重化している。そし
て、個々の保護装置の信頼性を高めるため、各装は毎に
電力系統の変成器と保護装置とを結ぶケーブルの不具合
、引外し回路の不具合、保護継電器の誤出力等を常時監
視手段によって監視している。(Conventional technology) In the protection of ultra-high voltage power systems, accidents generally have a large impact on the system, and in order to reliably eliminate accidents, it is necessary to install two main protection devices for one protection target, or to install a main protection device. Protection is multiplexed, such as by using equipment and back-up protection equipment. In order to improve the reliability of each protection device, each device is constantly monitored for defects in cables connecting power system transformers and protection devices, defects in tripping circuits, erroneous outputs of protective relays, etc. I'm monitoring it.
この常時監視手段は、監視不良を検出すると、外部へ表
示警報の信号を出力すると共に、自装置をロックしてい
る。When this constant monitoring means detects a monitoring failure, it outputs a display alarm signal to the outside and locks its own device.
以下、従来の保護継電装置について、主保護装置、後備
保護装置による送電線保護を例にとり、第３図及び第４
図を用いて説明する。Below, regarding conventional protective relay devices, we will take as an example the protection of power transmission lines using main protection devices and back-up protection devices, as shown in Figures 3 and 4.
This will be explained using figures.
第３図は一般的な送電系統図であり、図中１へは母線、
２八はし１！１断器、３八１，３八２はＣＴ、 ４Ａは
ＰＴ、 ５八は送電線保護装置の主保護継電装置、６＾
は同じく後備保護継電装置、７は送電線である。Figure 3 is a general power transmission system diagram.
28 Hashi 1!1 disconnector, 381 and 382 are CT, 4A is PT, 58 is main protection relay device of power transmission line protection device, 6^
Similarly, 7 is a back-up protection relay device, and 7 is a power transmission line.
第４図は保護継電装置の機能ブロックの概略図であり、
主保護継電装置及び後備保護継電装置とも第４図に示す
機能を有している。FIG. 4 is a schematic diagram of the functional blocks of the protective relay device,
Both the main protection relay device and the backup protection relay device have the functions shown in FIG.
図中１１は事故検出回路、１２は常時監視回路、１３は
保護装置に入力されるＣＴ、 ＰＴやその他関連機器の
入力回路の監視回路、１４はしゃ断器用外し回路等の保
護装置の出力回路の監視回路、１５は保護継電器の誤出
力の監視回路である。１６はオンディレィタイマであり
、ＯＲ回路１７に入力された各監視信号のうちで、いず
れか一つでも所定時間以上継続した時、監視不良と判定
する。１８は８０７回路、１９はへＮＯ回路である。In the figure, 11 is an accident detection circuit, 12 is a constant monitoring circuit, 13 is a monitoring circuit for the input circuit of CT, PT, and other related equipment that is input to the protection device, and 14 is an output circuit for the protection device such as a circuit breaker disconnection circuit. A monitoring circuit 15 is a monitoring circuit for erroneous output of the protective relay. Reference numeral 16 denotes an on-delay timer, which determines that monitoring is defective when any one of the monitoring signals input to the OR circuit 17 continues for a predetermined period of time or more. 18 is an 807 circuit, and 19 is a NO circuit.
オンディレィタイマ１６から「１」出力が生じると、Ｎ
ＯＴ回路１８によって装置ロックし、へＮＤ回路１９か
らしや断器に誤ったしゃ断指令を出さないように構成し
ている。When “1” output is generated from the on-delay timer 16, N
The OT circuit 18 locks the device, and the ND circuit 19 is configured to prevent an erroneous cutoff command from being issued to the mustard cutter.
又、図中に示されていないが、電源装置の監視等も行な
っている。Although not shown in the figure, the power supply device is also monitored.
一般に、監視不良の検出感度は、保護機能の検出感度よ
り高感度としである。Generally, the detection sensitivity of a monitoring failure is higher than the detection sensitivity of a protective function.
（発明が解決しようとする問題点）
今、第３図に示すＦ点で、例えば地絡を伴なわない送電
線断線事故が発生した場合を考える。(Problems to be Solved by the Invention) Now, let us consider a case where, for example, a power transmission line disconnection accident without a ground fault occurs at point F shown in FIG.
この時、主保護装置、後備保護装置ともその事故を検出
しないが、零相電流や逆相電流の継続により、入力回路
の監視不良が検出され、オンディレィタイマ１６の設定
時限後、装置ロックが行なわれ、外部へ表示警報がなさ
れる。At this time, neither the main protection device nor the backup protection device detects the accident, but due to the continuation of the zero-sequence current and negative-sequence current, a monitoring failure in the input circuit is detected, and after the set time of the on-delay timer 16 has elapsed, the device is locked. A warning is displayed to the outside.
即ち、装置の不良でないにも拘らず、装置ロックがなさ
れることになる。そして、不良の内容を発見するまで時
間がかかり、この時、系統に短絡等の事故が発生すれば
、送電線は主保護、後備保護装置とも常時監視不良検出
により装置ロックがなされているため、無保護状態とな
り、しゃ断器２Ａはしゃ断不能となって、系統に与える
影響ははかりしれない。In other words, the device is locked even though the device is not defective. It takes time to discover the nature of the defect, and if an accident such as a short circuit occurs in the grid, both the main protection and back-up protection devices on the power transmission line are constantly monitored to detect defects, and the devices are locked. It becomes unprotected and the breaker 2A becomes unable to shut off, and the impact on the grid is immeasurable.
本発明は、上記問題点を解決するためになされたもので
あり、系統事故に際して無保護状態をなくした保護継電
装置を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a protective relay device that eliminates the unprotected state in the event of a system fault.
［発明の構成１
（問題点を解決するための手段）
本発明を第１図によって説明すると、本発明では、主保
護、後備保護装置の常時監視不良検出タイマ１６ａ、
１６ｂに時限差を持たせ、どちらか一方が監視不良とな
って装置ロックされた場合に、他方の装置ロックを阻止
するインターロック回路を設けるよう構成した。[Configuration 1 of the Invention (Means for Solving Problems) The present invention will be explained with reference to FIG.
16b are provided with a time difference, and an interlock circuit is provided to prevent the other device from being locked when either device is locked due to monitoring failure.
（作用）
従って、主保護装置側の常時監視回路１２ａ側で監視不
良が発生して主保護装置のロックがなされた場合には、
その出力が８０７回路を介してＡＮＤ条件を成立させな
いため、後備保護装置ロックはなされることはない。(Function) Therefore, if a monitoring failure occurs on the constant monitoring circuit 12a side of the main protection device and the main protection device is locked,
Since the output does not satisfy the AND condition through the 807 circuit, the backup protection device is never locked.
（実施例） 以下、図面を参照して実施例を説明する。(Example) Examples will be described below with reference to the drawings.
第１図は、本発明の保護継電装置の一実施例のブロック
構成図である。FIG. 1 is a block diagram of an embodiment of the protective relay device of the present invention.
本実施例は、主保護装置と後備保護装置の常時監視不良
検出タイマに時限差を持たせて、装置ロックを阻止する
ようにしたものである。In this embodiment, the constant monitoring failure detection timers of the main protection device and the backup protection device are provided with different time limits to prevent device locking.
図中、添字ａは主保護装置用、ｂは後備保護装置用を意
味する。１２ａは主保護装置の常時監視回路、１６ａは
その不良検出タイマ（時限Ｔ１）、１２ｂ Ｇ、を後備
保護装置の常時監視回路、１６ｂはその不良検出タイマ
（時限Ｔ２ ）であり、夫々の監視不良検出タイ？ １
６ａ、 １６ｂの時限は、ＴＩ ＜Ｔ２に設定されてい
る。In the figure, the subscript a means the main protection device, and the subscript b means the backup protection device. 12a is a constant monitoring circuit of the main protection device, 16a is its failure detection timer (time limit T1), 12b is a constant monitoring circuit of the backup protection device, 16b is its failure detection timer (time limit T2), and 16a is its failure detection timer (time limit T1). Detection tie? 1
The time limits of 6a and 16b are set to TI < T2.
そして、不良検出タイマ１６ａの出力は、主保護装置ロ
ック出力とすると共に、ＮＯＴ回路１８を介してＡＮＤ
回路１９の一方の入力とし、不良検出タイマ１６ｂから
の入力と共に、ＡＮＤ条件をとって、後備保護装置のロ
ック出力としている。The output of the defect detection timer 16a is used as the main protection device lock output, and is ANDed via the NOT circuit 18.
It is used as one input of the circuit 19, and an AND condition is taken with the input from the defect detection timer 16b to provide a lock output of the backup protection device.
今、第３図のＦ点で事故が発生し、各装置の監視回路は
異常検出できるが、保護継電器が事故検出できない場合
を考える。この場合、不良検出タイマ１６ａの時限Ｔ１
が１６ｂの時限Ｔ２より小であるため、主保護装置は監
視不良となって装置ロックされるが、後備保護装置側で
は、ＮＯＴ回路１８の出力により、ロックは阻止される
。Now, let us consider a case where an accident occurs at point F in FIG. 3, and the monitoring circuits of each device can detect the abnormality, but the protective relay cannot detect the accident. In this case, the time limit T1 of the defect detection timer 16a
is smaller than the time limit T2 of 16b, the main protection device has a monitoring failure and is locked, but on the back-up protection device side, the lock is prevented by the output of the NOT circuit 18.
従って、監視不良内容の確認中に、系統に重大事故が発
生しても、後備保護装置により事故除去がなされて大事
には至らない。Therefore, even if a serious accident occurs in the system during the confirmation of monitoring defects, the accident will be eliminated by the back-up protection device and nothing serious will happen.
一方、主保護装置の継電器の誤動作で後備保護装置の常
時監視不良による装置ロックが阻止されるが、主保護、
後備保護装置とも同時に監視不良となることは、極めて
稀であり、実用上支障はない。On the other hand, a malfunction of the main protection device's relay prevents the device from being locked due to a failure in constant monitoring of the backup protection device, but the main protection device
It is extremely rare for a monitoring failure to occur at the same time as a back-up protection device, and there is no practical problem.
なお、上記実施例では後備保護装置ロックが主保護装置
の監視出力で阻止される例で説明したが、逆のケースと
しても当然かまわない。In the above embodiment, an example has been described in which the backup protection device lock is blocked by the monitoring output of the main protection device, but the opposite case may of course be used.
第２図は、本発明による他の実施例のブロック構成図で
ある。本実施例では、主保護と後備保護装置の夫々の監
視内容を比較し、同一部位が不良の場合、それはその部
位の不良ではなく、その前段、即ち、系統や別器の不良
と判定し、装置ロックを阻止するものである。FIG. 2 is a block diagram of another embodiment according to the present invention. In this embodiment, the monitoring content of the main protection device and the backup protection device are compared, and if the same part is defective, it is determined that it is not a defect in that part, but a defect in the previous stage, that is, the system or separate equipment, This prevents device locking.
第２図において、各常時監視回路１２ａ、 １２ｂの出
力をオンディレィタイマ１６ａ、 １６ｂを介して各保
護装置のロック出力としている点は、前記実施例の場合
と同様である。２０１〜２０３はＡＮＤ回路で、２０１
には入力回路の監視回路１３ａ、 １３ｂからの出力が
、２０２には出力回路の監視回路１４ａ、 １４ｂから
の出力が、又、２０３には継電器の出力監視回路１５ａ
、 １５ｂからの出力が接続され、前記各ＡＮＤ回路の
出力はＯＲ回路２１を介してオンディレィタイマ２２に
接続され、更にオンディレィタイマ２２の出力はＮＯＴ
回路１８を介して各ＡＮＤ回路１９ａ、 １９ｂに接続
される。In FIG. 2, the output of each constant monitoring circuit 12a, 12b is used as the lock output of each protection device via on-delay timers 16a, 16b, as in the previous embodiment. 201 to 203 are AND circuits, 201
are the outputs from the input circuit monitoring circuits 13a and 13b, 202 is the output from the output circuit monitoring circuits 14a and 14b, and 203 is the relay output monitoring circuit 15a.
, 15b are connected, the outputs of the AND circuits are connected to the on-delay timer 22 via the OR circuit 21, and the output of the on-delay timer 22 is connected to the NOT
It is connected to each AND circuit 19a, 19b via a circuit 18.
なお、オンディレィタイマの時限Ｔ３は、Ｔ３くＴ１及
びＴ３ ＜Ｔ２の関係にある。その他の記号で示す要素
は、第１図に同じである。Note that the time limit T3 of the on-delay timer has a relationship of T3 minus T1 and T3 < T2. Elements indicated by other symbols are the same as in FIG.
主保護と後備保護装置で同時に、同一部位の監視不良と
なる頻度は更に少ないと言える。又、同一部位の監視不
良か否かを判定する回路は、独立に設けても良いし、主
保護装置又は後備保護装置のいずれかに併置しても良い
。It can be said that the frequency of failure of monitoring of the same part by the main protection device and the backup protection device at the same time is even lower. Further, the circuit for determining whether or not there is a monitoring failure in the same part may be provided independently, or may be provided in parallel with either the main protection device or the back-up protection device.
上記各実施例では、送電線保各装置を例にとり説明した
が、他の変圧器保護装置、母線保護装置等で保護機能が
多重化されている装置に対しても同様に応用できる。Although each of the above embodiments has been described using a power transmission line protection device as an example, the present invention can be similarly applied to devices in which protection functions are multiplexed, such as other transformer protection devices and bus bar protection devices.
又、上記各実施例では、保護装置が２系列のものについ
て説明したが、３系列以上の装置にも適用可能なことは
言うまでもない。Further, in each of the above embodiments, description has been given of a protection device having two lines, but it goes without saying that the present invention can also be applied to a device having three or more lines.
［発明の効果］
以上説明した如く、本発明によれば継電器が検出不可能
な、そして、それほど急激に系統にダメージを与えない
ような事故に対し、装置ロックすることなく、無保護の
状態をなくすことの可能な保護継電装置を提供できる。[Effects of the Invention] As explained above, according to the present invention, in the event of an accident that cannot be detected by a relay and does not cause sudden damage to the system, it is possible to maintain an unprotected state without locking the device. It is possible to provide a protective relay device that can be eliminated.
第１図は本発明による保護継電装置の一実施例の機能ブ
ロック図、第２図は他の実施例の機能ブロック図、第３
図は一般的な送電系統図、第４図は従来の保護継電装置
の機能ブロック図である。
１２・・・常時監視回路FIG. 1 is a functional block diagram of one embodiment of the protective relay device according to the present invention, FIG. 2 is a functional block diagram of another embodiment, and FIG.
The figure is a general power transmission system diagram, and FIG. 4 is a functional block diagram of a conventional protective relay device. 12... Constant monitoring circuit
Claims (2)
え、監視不良検出時に装置ロックを行なう保護継電装置
において、各装置の常時監視回路に時限差を異にする監
視不良検出タイマを設け、一方の装置の監視不良にて当
該装置ロックがなされた場合に、他方の装置ロックの阻
止を行なうことを特徴とする保護継電装置。(1) In a protective relay device in which each of the multiplexed protection devices is equipped with a continuous monitoring circuit and the device is locked when a monitoring failure is detected, a monitoring failure detection timer with a different time limit is installed in the continuous monitoring circuit of each device. 1. A protective relay device, characterized in that when one device is locked due to monitoring failure of one device, locking of the other device is prevented.
で監視不良内容を比較し、同一不良内容である場合に行
なうことを特徴とする特許請求の範囲第１項記載の保護
継電装置。(2) The protection relay according to claim 1, characterized in that device locking is prevented by comparing the details of monitored failures between the multiplexed protection devices and when the contents of the failure are the same. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61306505A JPS63161810A (en) | 1986-12-24 | 1986-12-24 | Protective relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61306505A JPS63161810A (en) | 1986-12-24 | 1986-12-24 | Protective relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63161810A true JPS63161810A (en) | 1988-07-05 |
Family
ID=17957832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61306505A Pending JPS63161810A (en) | 1986-12-24 | 1986-12-24 | Protective relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63161810A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7531605B2 (en) | 2001-03-12 | 2009-05-12 | Idemitsu Kosan Co., Ltd. | Process for producing polyolefin resin composition and polypropylene composition |
| JP2009213247A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Electric Corp | Protection controller |
-
1986
- 1986-12-24 JP JP61306505A patent/JPS63161810A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7531605B2 (en) | 2001-03-12 | 2009-05-12 | Idemitsu Kosan Co., Ltd. | Process for producing polyolefin resin composition and polypropylene composition |
| JP2009213247A (en) * | 2008-03-04 | 2009-09-17 | Mitsubishi Electric Corp | Protection controller |
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