JPS63164334U - - Google Patents
Info
- Publication number
- JPS63164334U JPS63164334U JP5680087U JP5680087U JPS63164334U JP S63164334 U JPS63164334 U JP S63164334U JP 5680087 U JP5680087 U JP 5680087U JP 5680087 U JP5680087 U JP 5680087U JP S63164334 U JPS63164334 U JP S63164334U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- section
- change
- output
- zero
- 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 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第1図は本考案の一実施例を示す構成図、第2
図は従来の地絡方向継電器の構成図、第3図は説
明のための配電系統の等価図である。
1は零相電流の変化分検出手段、2は零相電圧
の変化分検出手段、3,4は変化分のレベル検出
部、5は位相判定部、6,7は論理積部。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a configuration diagram of a conventional ground fault directional relay, and FIG. 3 is an equivalent diagram of a power distribution system for explanation. Reference numeral 1 denotes means for detecting a change in zero-sequence current, 2 means for detecting a change in zero-phase voltage, 3 and 4 level detection parts for the change, 5 a phase determination part, and 6 and 7 logical product parts.
Claims (1)
化を夫々変化分検出手段にて検出し、検出された
各信号をトリガ信号印加時に夫々レベル検出部お
よび位相判定部に出力し、これら各レベル検出部
、位相判定部の出力論理積成立時に動作出力を発
生するようにしたものにおいて、前記トリガ信号
としや断器の投入条件信号との論理積信号を前記
各変化分検出手段に印加するよう構成したことを
特徴とする地絡方向継電器。 Each change in the zero-sequence voltage and zero-sequence current that occurs in the power system is detected by the change detection means, and each detected signal is output to the level detection section and the phase judgment section, respectively, when a trigger signal is applied. An operation output is generated when the output logical product of the level detection section and the phase determination section is established, wherein an AND signal of the trigger signal and the closing condition signal of the shimmer breaker is applied to each of the change detection means. A ground fault directional relay characterized by being configured as follows.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5680087U JPH0540677Y2 (en) | 1987-04-15 | 1987-04-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5680087U JPH0540677Y2 (en) | 1987-04-15 | 1987-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63164334U true JPS63164334U (en) | 1988-10-26 |
JPH0540677Y2 JPH0540677Y2 (en) | 1993-10-15 |
Family
ID=30885938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5680087U Expired - Lifetime JPH0540677Y2 (en) | 1987-04-15 | 1987-04-15 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0540677Y2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378422A (en) * | 1989-08-17 | 1991-04-03 | Kyushu Electric Power Co Inc | Detecting device for operation of circuit breaker and switch |
JPH0378419A (en) * | 1989-08-17 | 1991-04-03 | Kyushu Electric Power Co Inc | Failure prediction device for distribusion system |
-
1987
- 1987-04-15 JP JP5680087U patent/JPH0540677Y2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378422A (en) * | 1989-08-17 | 1991-04-03 | Kyushu Electric Power Co Inc | Detecting device for operation of circuit breaker and switch |
JPH0378419A (en) * | 1989-08-17 | 1991-04-03 | Kyushu Electric Power Co Inc | Failure prediction device for distribusion system |
Also Published As
Publication number | Publication date |
---|---|
JPH0540677Y2 (en) | 1993-10-15 |