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Line reclosing control method and device

A control method and a technology of a control device, which are applied in the direction of circuit devices, emergency protection circuit devices, emergency protection devices for automatic disconnection, etc., can solve problems such as long time consumption, and achieve time reduction, timeliness improvement, and time shortening Effect

Inactive Publication Date: 2020-04-03
STATE GRID ZHEJIANG ELECTRIC POWER +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a line reclosing control method and device, which is used to solve the problem that the existing reclosing method takes a long time

Method used

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  • Line reclosing control method and device

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Embodiment of line reclosing control method:

[0019] like figure 1 As shown, the line adopts two-terminal power supply mode, the M side of the line is provided with a switch K1, and the N side of the line is provided with a switch K2.

[0020] to combine figure 1 , this embodiment provides a line reclosing control method, and its corresponding flow chart is as follows figure 2 shown, including the following:

[0021] (1) When the line is running normally, the recloser obtains the operating status of the switches on both sides of the line, and the switches K1 and K2 are both in the closed position, and the charging of the recloser is completed.

[0022] (2) When a fault occurs in the line, the switches K1 and K2 on both sides a...

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PUM

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Abstract

The invention relates to a line reclosing control method and device, and the method comprises the steps: detecting the voltages of buses at two sides of a line after the reclosing is started, delayingfor T1, and then controlling the reclosing of one side, with the voltage, of the bus; detecting whether reclosing succeeds or not, if reclosing succeeds, reclosing on the other side is controlled after T2 is delayed, and the value range of T2 ranges from 0 s to 0.1 s. According to the invention, the time of closing at the rear closing side is shortened, the time required for integrating the reclosing process is reduced, and the timeliness of power supply recovery of the system is improved.

Description

technical field [0001] The invention relates to a line reclosing control method and device, belonging to the technical field of electric power system relay protection. Background technique [0002] The traditional recloser is set facing the switch, and a set of recloser is configured for each switch on both sides of the double-ended power supply line. First of all, the reclosing switches on both sides of the line are independent of each other. When a permanent fault occurs in the line, there is a disadvantage that the switches on both sides of the line reclose to the permanent fault. Secondly, the traditional recloser usually closes the main power supply side first, and then closes the other side. The side that closes first has no verification, and the side that closes later checks for synchronization or voltage. If the recloser action time of the side that closes first is t1, the reclosing action time of the rear closing side is t2 (t2>t1), then the time for the system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/06
CPCH02H3/063
Inventor 裘愉涛李鹤严耀良江伟建孟乐李俊刚姜睿智吴水兰庞杰锋黄蔚冀娟常彦彦孙文龙陈刚万尧峰吴佳毅蔡溢行周洁
Owner STATE GRID ZHEJIANG ELECTRIC POWER