High-voltage circuit breaker closing control loop fault determination search method

A high-voltage circuit breaker and control circuit technology, which is applied in the field of fault judgment and search for the closing control circuit of high-voltage circuit breakers, can solve the problems affecting the safe and stable production of energy-consuming units, improper search methods, and long power outages, and achieves good production and operation management. performance, reducing economic losses, reducing the effect of downtime

Inactive Publication Date: 2018-07-17
SD STEEL RIZHAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to improper search method, the search efficiency is low, resulting in long power outages, affecting the safe and stable production of energy-consuming units

Method used

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  • High-voltage circuit breaker closing control loop fault determination search method
  • High-voltage circuit breaker closing control loop fault determination search method
  • High-voltage circuit breaker closing control loop fault determination search method

Examples

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Embodiment Construction

[0021] The present invention is described in further detail now in conjunction with accompanying drawing.

[0022] according to figure 1 A high-voltage circuit breaker closing control circuit fault judgment and search method is shown. When searching for faults, the type of fault in the closing control circuit should be judged first, and whether it is an electrical circuit fault or a mechanical circuit fault is distinguished. After the mechanical circuit fault is eliminated, the electrical circuit If the closing coil is not powered and the closing electromagnet cannot be closed normally during the closing and power transmission operation, it is an electrical circuit failure, such as figure 1 The electrical wiring diagram of the closing control circuit of the high-voltage circuit breaker described in this operation method (taking the handcart vacuum circuit breaker commonly used in substations with spring operating mechanism as an example), the inspection steps are as follows: ...

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PUM

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Abstract

The present invention relates to a high-voltage circuit breaker closing control loop fault determination search method. The method comprises the steps of: determining the type of a closing control loop fault, and distinguishing the type of the closing control loop fault is an electrical loop fault or a mechanical loop fault. The method comprises the checking steps of: (1) checking whether a directcurrent power supply and a voltage are normal or not; (2) checking a skip monitoring HG green light is bright or not; (3) checking a universal change-over switch SA wiring loop; (4) checking internalfaults of a microprocessor protection device, if checking of (1)-(3) does not discover anomaly, determining that the internal faults of a microprocessor protection device are generated, requiring maintenance or replacement of a new operation board (I / O plug-in) so as to further perform checking and confirmation. The breaker closing control loop fault rapid determination, searching and operation method is simple to operate, solves the actual problem of a scene device, improves the fault searching efficiency, reduce the device fault outage time, reduce the energy consumption enterprise economiclosses and improves the power supply reliability.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a method for judging and finding faults in a closing control circuit of a high-voltage circuit breaker. Background technique [0002] The circuit breaker is a very important power supply equipment in the power system. Whether the circuit breaker fault can be quickly handled and the power supply can be restored is related to the stability and reliability of the power system. In recent years, with the wide application of microcomputer protection technology in the secondary circuit of circuit breakers, the faults of the circuit breaker closing control circuit have also shown some new characteristics, and its fault finding and processing methods are also different from the closing control of conventional protection. Circuits are not the same. Due to improper search methods and low search efficiency, long power outages are caused, which affects the safe and stable production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3272G01R31/3275
Inventor 石东郝延雯范书昌丁利生刘培恩陈树环曹西忠郑文军林卫全孙业锁
Owner SD STEEL RIZHAO CO LTD
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