JPS6477421A - Network incoming apparatus - Google Patents

Network incoming apparatus

Info

Publication number
JPS6477421A
JPS6477421A JP25841187A JP25841187A JPS6477421A JP S6477421 A JPS6477421 A JP S6477421A JP 25841187 A JP25841187 A JP 25841187A JP 25841187 A JP25841187 A JP 25841187A JP S6477421 A JPS6477421 A JP S6477421A
Authority
JP
Japan
Prior art keywords
directional
power
relays
network
breaker
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
JP25841187A
Other languages
Japanese (ja)
Other versions
JPH0646849B2 (en
Inventor
Takashi Asano
Kazunobu Fukuda
Mitsuhiro Nakase
Katsutoshi Yamaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP25841187A priority Critical patent/JPH0646849B2/en
Publication of JPS6477421A publication Critical patent/JPS6477421A/en
Publication of JPH0646849B2 publication Critical patent/JPH0646849B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Supply And Distribution Of Alternating Current (AREA)

Abstract

PURPOSE:To obtain a network incoming apparatus capable of conduct ing a parallel operation with a non-utility generator by incorporating a cogeneration system into a network. CONSTITUTION:Each of network protectors NWT1-NWT3 has directional power relays 67S1-67S3 and overcurrent relays 51S1-51S3. Said directional- power relays 67S1-67S3 have high sensitivity elements operating according to an exciting current from the secondary side of network transformers NWT1-NWT3 corresponding to said directional-power relays and low sensitivity elements operating according to a reverse power higher than a regenerative power from the load of the network transformers. A bus-connecting breaker 52SG is provided with a control circuit for disconnecting the breaker 52SG either by satisfaction of conditions of the operation of the overcurrent relays 51S1-51S3 and the reverse-power detecting operation of the directional-power relays 67S1-67S3 or by the operation of the low sensitivity elements of the directional-power relays 67S1-67S3. Also, the breaker 52SG is provided with a lock circuit for protector breakers PROCB1-PROCB3 actuated only by the operation of the directional-power relays 67S1-67S3 in a state where the bus- connecting breaker 52SG is opened by the operation of high sensitivity elements.
JP25841187A 1987-06-24 1987-10-15 Network power receiver Expired - Lifetime JPH0646849B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25841187A JPH0646849B2 (en) 1987-06-24 1987-10-15 Network power receiver

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP15537687 1987-06-24
JP62-155376 1987-06-24
JP25841187A JPH0646849B2 (en) 1987-06-24 1987-10-15 Network power receiver

Publications (2)

Publication Number Publication Date
JPS6477421A true JPS6477421A (en) 1989-03-23
JPH0646849B2 JPH0646849B2 (en) 1994-06-15

Family

ID=26483393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25841187A Expired - Lifetime JPH0646849B2 (en) 1987-06-24 1987-10-15 Network power receiver

Country Status (1)

Country Link
JP (1) JPH0646849B2 (en)

Also Published As

Publication number Publication date
JPH0646849B2 (en) 1994-06-15

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