Method and device for relay protection against misoperation of soft press plate

A relay protection device and anti-misoperation technology, applied in emergency protection circuit devices, circuit devices, components of emergency protection devices, etc., can solve the problem of easy misoperation of soft pressing plates, and achieve the effect of avoiding misoperation

Active Publication Date: 2019-03-19
XJ ELECTRIC +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for preventing misoperation of the relay protection soft pressure plate, which is used to solve the problem that the soft pressure plate of the existing relay protection secondary equipment is easy to misuse

Method used

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  • Method and device for relay protection against misoperation of soft press plate
  • Method and device for relay protection against misoperation of soft press plate
  • Method and device for relay protection against misoperation of soft press plate

Examples

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Effect test

Embodiment 1

[0037] The present invention proposes a method for relay protection against misoperation of a soft press plate, the steps of which include:

[0038] According to the input or exit state of the soft pressure plate of the relay protection device, the state of the relay protection device is divided into operation state, signal state, exit state and maintenance state. Among them, the running state includes: GOOSE sending soft pressing plate input, function soft pressing plate input and inspection soft pressing plate exiting. The signal state includes: GOOSE sending soft pressure plate exit, function soft pressure plate input and maintenance soft pressure plate exit. Exit states include: GOOSE send soft-press exit, function soft-press exit and inspection soft-press exit. The maintenance state includes: GOOSE sending soft-press plate exit, function soft-press plate exit and inspection soft-press plate input.

[0039] Then, detect the input or exit state of the soft pressure plate ...

Embodiment 2

[0049] According to the state of the soft pressure plate of the relay protection device and the operation state of the primary equipment, the relay protection device can be divided into operation state, signal state, exit state and maintenance state. The rules of each state are as follows: figure 1 As shown, specifically:

[0050] For running state: the device is in normal running state. The SV receiving soft pressure plate is in the input state when the equipment is running, and must be in the exit state when the equipment is withdrawn and the merged unit is overhauled; the GOOSE receiving soft pressure plate is in the exit state when the associated device is overhauled, and it is in the input state when the associated device is in normal operation; once When the equipment is running, the corresponding interval GOOSE sending soft pressure plate is in the input state; the main protection function soft pressure plate is in the input state, and the maintenance soft pressure plat...

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Abstract

The invention relates to a relay protection soft pressing plate misoperation prevention method and device. Effective real-time diagnosis of the state of a relay protection device can be performed through comprehensive analysis of soft pressing plate on / off state of the relay protection device and primary equipment operation; besides, only soft pressing plate operation capable of completing state switching is allowed to be performed and soft pressing plate operation causing the uncertain state of the relay protection device is blocked according to the state diagnosis rules and the state switching order of the relay protection device so that self-locking of the relay protection device can be realized. Self-locking of soft pressing plate operation probably causing the safety hidden trouble isrealized based on the four steps so that the safety and the reliability of operation and maintenance of the intelligent transformer station can be effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of comprehensive automation of electric power system intelligent substations, and in particular relates to a method and device for preventing misoperation of a relay protection soft pressure plate. Background technique [0002] The digitization and networking of information in smart substations has replaced a large number of cable loops with optical fiber loops, and the structure of the relay protection device at the interval layer has changed. The original hard pressure plate for the exit has been replaced by a soft pressure plate for the exit. In order to avoid the influence of abnormal digital information, the relay protection device has added a receiving soft pressure plate, which can effectively isolate abnormal SV information and GOOSE information. With the application of IEC61850, the functional pressure plates of intelligent or conventional relay protection devices are gradually transformed into soft...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02H1/00
CPCH02H1/00
Inventor李宝潭张海庭吴正青邱俊宏李江林林绍璋郭利军卫星过锐吴佳李永照陈哲包芳王卫东朱斌斌张思远赵丹刘登鑫牛雪朋
OwnerXJ ELECTRIC