JPH03169221A - Multiple bus protective-relay - Google Patents

Multiple bus protective-relay

Info

Publication number
JPH03169221A
JPH03169221A JP30443289A JP30443289A JPH03169221A JP H03169221 A JPH03169221 A JP H03169221A JP 30443289 A JP30443289 A JP 30443289A JP 30443289 A JP30443289 A JP 30443289A JP H03169221 A JPH03169221 A JP H03169221A
Authority
JP
Japan
Prior art keywords
bus
discriminated
fault
generated
cbb
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
Application number
JP30443289A
Other languages
Japanese (ja)
Other versions
JPH07110103B2 (en
Inventor
Takeshi Hamaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP30443289A priority Critical patent/JPH07110103B2/en
Publication of JPH03169221A publication Critical patent/JPH03169221A/en
Publication of JPH07110103B2 publication Critical patent/JPH07110103B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To enable the respective fault of multiple buses to be discriminated by detecting the current of respective feeders to be discriminated, and by specifying it to be discriminated whether it is a feeder fault or a bus fault, to interrupt a specific breaker.
CONSTITUTION: When all inflow current and outflow current are detected and it is discriminated that a bus line fault is generated, then the output of interrupting command is directed to bus breakers CBB1, CBB2 arranged in a bus connecting section, and they are interrupted. After that, it is discriminated whether the fault is generated on a I group bus or on a II group bus. For example, when it is discriminated that the fault is generated on the I group bus, then the output of the interrupting command is directed to a bus breaker CBB3 in the connecting section and it is interrupted, and it is discriminated whether an fault generating point is a I1 bus or a I2 bus. When it is discriminated that the fault is generated on the I1 bus, then the output of the interrupting command is directed to a feeder breaker CBS1 set for a feeder connecting a power source 21 and a I bus 11.
COPYRIGHT: (C)1991,JPO&Japio
JP30443289A 1989-11-22 1989-11-22 Multiple bus protection relay Expired - Lifetime JPH07110103B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30443289A JPH07110103B2 (en) 1989-11-22 1989-11-22 Multiple bus protection relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30443289A JPH07110103B2 (en) 1989-11-22 1989-11-22 Multiple bus protection relay

Publications (2)

Publication Number Publication Date
JPH03169221A true JPH03169221A (en) 1991-07-22
JPH07110103B2 JPH07110103B2 (en) 1995-11-22

Family

ID=17932935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30443289A Expired - Lifetime JPH07110103B2 (en) 1989-11-22 1989-11-22 Multiple bus protection relay

Country Status (1)

Country Link
JP (1) JPH07110103B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786557A (en) * 1993-09-10 1998-07-28 Charmilles Technologies S.A. Electroerosion machine with a frame with a new structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786557A (en) * 1993-09-10 1998-07-28 Charmilles Technologies S.A. Electroerosion machine with a frame with a new structure

Also Published As

Publication number Publication date
JPH07110103B2 (en) 1995-11-22

Similar Documents

Publication Publication Date Title
JPH03169221A (en) Multiple bus protective-relay
JPH04274999A (en) Power fault protection for high momentum system
JPH03103044A (en) Fault detecting system for diode in duplex power supply
JPH04275038A (en) Power supply changeover method
JPH0281737A (en) Overcurrent tripping device
JPH03155344A (en) Grounding fault point recognazing device for wiring
JPH01148018A (en) System for detecting fault section of substation
JPH02193525A (en) Short-circuit protective relay system
JPH02307332A (en) Selective interruption of power load
JPH02184222A (en) Overcurrent protective system for inverter
JPH0469009A (en) Faulty feeder selector
JPS54113841A (en) Automatic switching device of bus bar
JPS5556470A (en) Power abnormality detecting circuit
JPS53101643A (en) Automatically and selectively interrupting system
JPH04141321A (en) Detection device for disconnection of wire electric discharging machine
JPH04312330A (en) Uninterruptible power supply
JPH0449809A (en) Overcurrent protective device
JPH02311123A (en) Dc ground-fault detector
JPS54131734A (en) Power feeder
JPH03112316A (en) Directional short-circuit protective relaying system
JPH02275537A (en) System for switching fault in sensor system
JPS62125925A (en) Failure selecting relay
JPS63294211A (en) Protective relay
JPH03245722A (en) Circuit breaker
JPS63253899A (en) Excess current protector for rotary electric machine exciting circuit