JPS54148251A - Bus protective system - Google Patents
Bus protective systemInfo
- Publication number
- JPS54148251A JPS54148251A JP5625278A JP5625278A JPS54148251A JP S54148251 A JPS54148251 A JP S54148251A JP 5625278 A JP5625278 A JP 5625278A JP 5625278 A JP5625278 A JP 5625278A JP S54148251 A JPS54148251 A JP S54148251A
- Authority
- JP
- Japan
- Prior art keywords
- bus
- disconnector
- current transformer
- divided protection
- relay
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To digitally effect the divided protection of plural buses, by synchronously digitizing the currents of circuits and the opening or closing signals of bus selecting disconnectors and making calculations to produce signals to control the input data to a divided protection relay.
CONSTITUTION: The opening or closing signals of the bus selecting disconnectors 1A, 1B and the circuit currents detected by a current transformer 3 are entered into a coding unit 11 and synchronously sampled at a prescribed period so that digital quantities are obtained. If a digital protective relay 12 performs the divided protection of a bus A, current information obtained from the current transformer 3 is controlled by using the digital-coded condition of the disconnector 1A. When the disconnector 1A is open, the current information is not used. If the relay 12 performs the divided protection of a bus B, information obtained from the current transformer 3 is controlled by using the condition of the disconnector 1B.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53056252A JPS5818863B2 (en) | 1978-05-12 | 1978-05-12 | Bus bar protection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53056252A JPS5818863B2 (en) | 1978-05-12 | 1978-05-12 | Bus bar protection method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54148251A true JPS54148251A (en) | 1979-11-20 |
JPS5818863B2 JPS5818863B2 (en) | 1983-04-15 |
Family
ID=13021882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53056252A Expired JPS5818863B2 (en) | 1978-05-12 | 1978-05-12 | Bus bar protection method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5818863B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5875424A (en) * | 1981-10-30 | 1983-05-07 | 株式会社明電舎 | Digital bus protecting device |
JPS62210832A (en) * | 1986-03-10 | 1987-09-16 | 日新電機株式会社 | Transforming equipment for distribution |
-
1978
- 1978-05-12 JP JP53056252A patent/JPS5818863B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5875424A (en) * | 1981-10-30 | 1983-05-07 | 株式会社明電舎 | Digital bus protecting device |
JPH0232851B2 (en) * | 1981-10-30 | 1990-07-24 | Meidensha Electric Mfg Co Ltd | |
JPS62210832A (en) * | 1986-03-10 | 1987-09-16 | 日新電機株式会社 | Transforming equipment for distribution |
Also Published As
Publication number | Publication date |
---|---|
JPS5818863B2 (en) | 1983-04-15 |
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