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Centralized feeder automation control method for demarcation fault processing

A feeder automation and control method technology, applied in electrical components, emergency protection circuit devices, circuit devices, etc., to solve compatibility problems, improve safety, and achieve the effect of simple steps

Inactive Publication Date: 2013-03-27
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, a centralized feeder automation control method for boundary fault processing is proposed. Using this method can well solve the compatibility problem between the boundary switch and centralized feeder automation.

Method used

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  • Centralized feeder automation control method for demarcation fault processing
  • Centralized feeder automation control method for demarcation fault processing

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Embodiment Construction

[0019] A centralized feeder automation control method for boundary fault processing provided by the present invention can be used in a centralized feeder automation system to solve the compatibility problem between a boundary switch and a centralized feeder automation. It is characterized in that:

[0020] The centralized feeder automation system includes:

[0021] A substation outlet circuit breaker is set at the output end of each substation, and each substation controls a power distribution line;

[0022] Different power distribution lines are connected through a centralized tie switch, and the centralized tie switch is in an open state under normal conditions;

[0023] Several centralized section switches are set on the power distribution main line, and a boundary switch is set in each user's branch distribution line. The centralized section switch and the boundary switch form communication with the distribution automation master station respectively. connect;

[0024] S...

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Abstract

The invention discloses a centralized feeder automation control method for demarcation fault processing. The method includes the implementation steps of 1) master station system setting: monitoring fault alarm signals of a demarcation switch and a centralized section switch by a distribution automation master station in real time and entering a fault processing program; 2) fault area isolation: tripping a substation outgoing breaker and tripping and locking the demarcation switch to achieve fault user isolation, and sending the fault alarm signals to the distribution automation master station by the demarcation switch and the centralized section switch; and 3) non-fault area power restoration: sending a 'remote closing' order to the substation outgoing breaker by the distribution automation master station for non-fault line power restoration. The method is simple in implementation steps, user phase fault can be processed rapidly, compatibility of centralized feeder automation with the demarcation switch during user phase fault processing is achieved, forced outage range is prevented from enlarging, and safety of a power transmission line is improved.

Description

technical field [0001] The invention relates to the technical field of power distribution automation, in particular to a centralized feeder automation control method for boundary fault processing. Background technique [0002] With the continuous deepening of the construction of my country's smart distribution network, the urban distribution network will gradually realize the automation of feeders. Restore power. According to the survey, user equipment failures can account for more than 70% of distribution network failures, and user boundary switches have been widely used because they can effectively remove user failures. [0003] Through the analysis of the compatibility between the boundary switch and feeder automation, the inventor found that: when a single-phase ground fault occurs, the boundary switch can automatically isolate the user fault without affecting the feeder automation; when a phase-to-phase short circuit fault occurs, the boundary switch and With the coope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22H02J13/00
CPCY04S10/20Y02E60/725Y02E60/00
Inventor 许明房牧王肃谢荣昆刘书忠杜琰王晖王晓燕
Owner STATE GRID CORP OF CHINA
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