JPS63164333U - - Google Patents
Info
- Publication number
- JPS63164333U JPS63164333U JP5550987U JP5550987U JPS63164333U JP S63164333 U JPS63164333 U JP S63164333U JP 5550987 U JP5550987 U JP 5550987U JP 5550987 U JP5550987 U JP 5550987U JP S63164333 U JPS63164333 U JP S63164333U
- Authority
- JP
- Japan
- Prior art keywords
- feeder
- zero
- sequence current
- output
- introduces
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例を示す回路構成図、
第２図は従来の地絡方向継電器の動作位相説明図
である。
１１はレベル検出部、１２は位相判定部、１３
は論理積回路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention;
FIG. 2 is an explanatory diagram of the operating phases of a conventional ground fault directional relay. 11 is a level detection section, 12 is a phase determination section, 13
is an AND circuit.
Claims (1)
相電流を用いて地絡方向を検出する継電器におい
て、前記各フイーダに発生した零相電流を夫々導
入してそのレベルを検出するレベル検出部と、自
フイーダの零相電流と他フイーダの各零相電流を
導入し自フイーダの零相電流の位相が最も進んで
いたとき出力を発する位相判定部と、この位相判
定部の出力と前記レベル検出部の出力との論理積
を得て事故信号を出力する論理積回路とを夫々各
フイーダに対応して設けたことを特徴とする地絡
方向継電器。 A relay that detects the direction of a ground fault using zero-sequence current generated in a power distribution system consisting of a plurality of feeders, comprising: a level detection unit that introduces the zero-sequence current generated in each feeder and detects its level; A phase determining section which introduces the zero-sequence current of the feeder and each zero-sequence current of the other feeder and outputs an output when the phase of the zero-sequence current of the own feeder is most advanced; and the output of this phase determining section and the level detecting section. A ground fault directional relay characterized in that an AND circuit for obtaining an AND with an output and outputting a fault signal is provided corresponding to each feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5550987U JPS63164333U (en) | 1987-04-13 | 1987-04-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5550987U JPS63164333U (en) | 1987-04-13 | 1987-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63164333U true JPS63164333U (en) | 1988-10-26 |
Family
ID=30883466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5550987U Pending JPS63164333U (en) | 1987-04-13 | 1987-04-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164333U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412433A (en) * | 1977-06-30 | 1979-01-30 | Omron Tateisi Electronics Co | Earthing detection circuit |
| JPS5579618A (en) * | 1978-12-13 | 1980-06-16 | Meidensha Electric Mfg Co Ltd | Grounddfault distance relay |
-
1987
- 1987-04-13 JP JP5550987U patent/JPS63164333U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412433A (en) * | 1977-06-30 | 1979-01-30 | Omron Tateisi Electronics Co | Earthing detection circuit |
| JPS5579618A (en) * | 1978-12-13 | 1980-06-16 | Meidensha Electric Mfg Co Ltd | Grounddfault distance relay |