JPS6233639U - - Google Patents
Info
- Publication number
- JPS6233639U JPS6233639U JP12255385U JP12255385U JPS6233639U JP S6233639 U JPS6233639 U JP S6233639U JP 12255385 U JP12255385 U JP 12255385U JP 12255385 U JP12255385 U JP 12255385U JP S6233639 U JPS6233639 U JP S6233639U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- output
- line
- overcurrent detection
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図〜第４図はこの考案の一実施例の
動作を説明するためのタイムチヤート、第５図は
並行２回線送電線に備えられる保護継電装置の配
置を示す図、第６図は従来例の構成を示すブロツ
ク図、第７図および第８図は従来例の動作を説明
するためのタイムチヤートである。
１……方向判定回路、２……過電流検出回路、
３，４，９，６……ＡＮＤゲート、５，６……フ
リツプフロツプ回路、７，８……限時継電器、２
０……保護継電装置。
Figure 1 is a block diagram showing the configuration of an embodiment of this invention, Figures 2 to 4 are time charts for explaining the operation of an embodiment of this invention, and Figure 5 is a parallel two-line power transmission line. 6 is a block diagram showing the configuration of a conventional example, and FIGS. 7 and 8 are time charts for explaining the operation of the conventional example. 1...Direction determination circuit, 2...Overcurrent detection circuit,
3, 4, 9, 6...AND gate, 5, 6...Flip-flop circuit, 7, 8...Time-limiting relay, 2
0...Protective relay device.
Claims (1)
２回線送電線にそれぞれ配置した２つの計器用変
流器の出力の差電流とを入力して故障回線方向を
判定する方向判定回路と、前記差電流を入力して
故障回線に流入する過電流を検出する過電流検出
回路と、この過電流検出回路から出力される過電
流検出信号と前記方向判定回路の出力のうち一方
の第１回線方向判定信号の論理積をとる第１の論
理回路と、前記過電流検出信号と第２回線方向判
定信号の論理積をとる第２の論理回路と、前記第
１の論理積回路の論理積信号の出力でセツトされ
前記過電流検出信号の出力がなくなるとリモセツ
トされる第１のフリツプフロツプ回路と、前記第
２の論理積回路の論理積の出力でセツトされ前記
過電流検出信号の出力がなくなるとリセツトされ
る第２のフリツプフロツプ回路と、前記第１のフ
リツプフロツプ回路の出力を受けて第１限時出力
信号を出力する第１の限時継電器と、前記第２の
フリツプフロツプ回路の出力を受けて限時出力信
号を出力する第２の限時継電器と前記第１限時出
力信号と前記過電流検出信号の論理積をとつて前
記第１回線のしや断器の引はずし指令信号を出力
する第３の論理回路と、前記第２限時出力信号と
前記過電流検出信号の論理積をとつて前記第２回
線のしや断器の引きはずし指令信号を出力する第
４の論理回路とを備えた並行２回線送電線用保護
継電装置。 a direction determination circuit that determines the fault line direction by inputting the output voltage of a voltage transformer placed on the bus bar and the difference current between the outputs of two voltage current transformers placed on the parallel two-line power transmission line; an overcurrent detection circuit that inputs a difference current and detects an overcurrent flowing into the faulty line; an overcurrent detection signal output from the overcurrent detection circuit; and one of the outputs of the direction determination circuit in the first line direction. A first logic circuit that takes an AND of the determination signal, a second logic circuit that takes an AND of the overcurrent detection signal and a second line direction determination signal, and an AND signal of the first AND circuit. It is set by the output of the logical product of the first flip-flop circuit and the second AND circuit, and is reset when the overcurrent detection signal is no longer output. a second flip-flop circuit that receives the output of the first flip-flop circuit and outputs a first time-limited output signal; and a first time-limit relay that receives the output of the second flip-flop circuit and outputs a time-limited output signal. a third logic circuit that calculates the logical product of the second time-limited relay to output, the first time-limited output signal, and the overcurrent detection signal and outputs a trip command signal for the disconnector of the first line; For use in a parallel two-line power transmission line, comprising: a fourth logic circuit that calculates the logical product of the second time-limited output signal and the overcurrent detection signal and outputs a trip command signal for the disconnector of the second line. Protective relay device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985122553U JPH0510516Y2 (en) | 1985-08-08 | 1985-08-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985122553U JPH0510516Y2 (en) | 1985-08-08 | 1985-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6233639U true JPS6233639U (en) | 1987-02-27 |
| JPH0510516Y2 JPH0510516Y2 (en) | 1993-03-15 |
Family
ID=31012847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985122553U Expired - Lifetime JPH0510516Y2 (en) | 1985-08-08 | 1985-08-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510516Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141723A (en) * | 1980-04-02 | 1981-11-05 | Tokyo Shibaura Electric Co | Channel selecting relay unit |
| JPS60144113A (en) * | 1983-12-29 | 1985-07-30 | 横河電機株式会社 | Current limiting circuit |
| JPS60144111A (en) * | 1983-12-30 | 1985-07-30 | 東京電力株式会社 | Distance relaying device |
-
1985
- 1985-08-08 JP JP1985122553U patent/JPH0510516Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141723A (en) * | 1980-04-02 | 1981-11-05 | Tokyo Shibaura Electric Co | Channel selecting relay unit |
| JPS60144113A (en) * | 1983-12-29 | 1985-07-30 | 横河電機株式会社 | Current limiting circuit |
| JPS60144111A (en) * | 1983-12-30 | 1985-07-30 | 東京電力株式会社 | Distance relaying device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0510516Y2 (en) | 1993-03-15 |
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