CN202949213U - Auxiliary protection device for remote tripping judgment - Google Patents

Auxiliary protection device for remote tripping judgment Download PDF

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Publication number
CN202949213U
CN202949213U CN 201220634788 CN201220634788U CN202949213U CN 202949213 U CN202949213 U CN 202949213U CN 201220634788 CN201220634788 CN 201220634788 CN 201220634788 U CN201220634788 U CN 201220634788U CN 202949213 U CN202949213 U CN 202949213U
Authority
CN
China
Prior art keywords
transformer
protection
voltage
far away
auxiliary protection
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.)
Active
Application number
CN 201220634788
Other languages
Chinese (zh)
Inventor
孙爱民
薛国帧
江海燕
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.)
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Original Assignee
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co 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 Magang Group Holding Co Ltd, Maanshan Iron and Steel Co Ltd filed Critical Magang Group Holding Co Ltd
Priority to CN 201220634788 priority Critical patent/CN202949213U/en
Application granted granted Critical
Publication of CN202949213U publication Critical patent/CN202949213U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an auxiliary protection device for remote tripping judgment. The auxiliary protection device is characterized by comprising a transformer protection device, a line protection device and two remote tripping devices. The transformer protection device is connected with the remote tripping devices through cables, the line protection device is connected with the remote tripping devices through cables, and the remote tripping devices are connected with each other through fiber channels. By means of the auxiliary protection device for remote tripping judgment, influences caused by faults of a main transformer body are effectively reduced, and device faults in larger ranges are avoided.

Description

The auxiliary protection device that a kind of transfer trip is differentiated
Technical field
The utility model belongs to protection equipment for transformer, and concrete is a kind of auxiliary protection device of high side switch transfer trip.
Background technology
Under the line-transformer-connection mode, work as power transformer interior fault, require the mains side circuit breaker trip after differential protection action or protection action.For catastrophe failure, differential protection action, the supply side protection may be moved, and if the protection action if timely deenergization just only has the wait fault progression, until the mains side protection is moved, has extended fault time, make fault spread.
Summary of the invention
In order to solve under the line-transformer-connection mode, when transformer protection is moved, in time cut off the electricity supply, avoid accident impact that the deferred action of higher level's route protection causes to enlarge words
The auxiliary protection device that problem, the utility model provide a kind of transfer trip to differentiate, the technical solution of the utility model is as follows:
The auxiliary protection device that a kind of transfer trip is differentiated; it is characterized in that: it comprises voltage device protective device, line protective devices, two devices of jumping far away; described voltage device protective device is connected with the device of jumping far away by cable; line protective devices are connected with the device of jumping far away by cable, and two far away jumpings between device are connected by optical-fibre channel.
Jumping device far away described above also is connected with current transformer and voltage transformer, and current transformer arranges near the main transformer high side switch, and voltage transformer arranges near the 110kV voltage bus.
When main transformer breaks down, at first current transformer and voltage transformer monitor the abnormal of electric current and voltage, and signal is transferred to one of them device of jumping far away, far jumps device analysis, send instruction to line protective devices, line protective devices send trip command to the high side switch open circuit; Simultaneously signal is transferred to another jumping device far away, then sends instruction by it, voltage protection starts.
The auxiliary protection device that adopts transfer trip described in the utility model to differentiate effectively reduces the impact that the main transformer body fault produces, and avoids equipment fault in larger scope.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, main transformer, 2, the 110KV voltage bus, 3, the voltage device protective device, 4, far jump device, 5, current transformer, 6, voltage transformer, 7, high side switch, 8, line protective devices.
Embodiment
Referring to accompanying drawing; the auxiliary protection device that a kind of transfer trip is differentiated; be characterized in: it comprises voltage device protective device 3, line protective devices 8, two devices 4 of jumping far away; described voltage device protective device 3 is connected with the device 4 of jumping far away by cable; line protective devices 8 are connected with the device 4 of jumping far away by cable, and two far away jumpings between device 4 are connected by optical-fibre channel.
Jumping device 4 far away described above also is connected with current transformer 5 and voltage transformer 6, and current transformer 5 arranges near main transformer 1 high side switch 7, and voltage transformer 6 arranges near 110kV voltage bus 2.
The auxiliary protection device that adopts transfer trip described in the utility model to differentiate effectively reduces the impact that the main transformer body fault produces, and avoids equipment fault in larger scope.

Claims (2)

1. the auxiliary protection device differentiated of a transfer trip; it is characterized in that: it comprises voltage device protective device (3), line protective devices (8), two devices (4) of jumping far away; described voltage device protective device (3) is connected with the device (4) of jumping far away by cable; line protective devices (8) are connected with the device (4) of jumping far away by cable, and two far away jumpings between device (4) are connected by optical-fibre channel.
2. the auxiliary protection device differentiated of transfer trip according to claim 1; it is characterized in that: far jump device (4) and also be connected with current transformer (5) and voltage transformer (6); current transformer (5) arranges near main transformer (1) high side switch (7), and voltage transformer (6) arranges near 110kV voltage bus (2).
CN 201220634788 2012-11-27 2012-11-27 Auxiliary protection device for remote tripping judgment Active CN202949213U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220634788 CN202949213U (en) 2012-11-27 2012-11-27 Auxiliary protection device for remote tripping judgment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220634788 CN202949213U (en) 2012-11-27 2012-11-27 Auxiliary protection device for remote tripping judgment

Publications (1)

Publication Number Publication Date
CN202949213U true CN202949213U (en) 2013-05-22

Family

ID=48424893

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220634788 Active CN202949213U (en) 2012-11-27 2012-11-27 Auxiliary protection device for remote tripping judgment

Country Status (1)

Country Link
CN (1) CN202949213U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098739A (en) * 2015-09-09 2015-11-25 南京国电南自电网自动化有限公司 Partition differential method for connection mode for line transformer bank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098739A (en) * 2015-09-09 2015-11-25 南京国电南自电网自动化有限公司 Partition differential method for connection mode for line transformer bank

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C53 Correction of patent for invention or patent application
COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: SUN AIMIN XUE GUOZHEN JIANG HAIYAN TO: XU QIAN ZHAO BOSHI

CB03 Change of inventor or designer information

Inventor after: Xu Qian

Inventor after: Zhao Boshi

Inventor before: Sun Aimin

Inventor before: Xue Guozheng

Inventor before: Jiang Haiyan