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Method for eliminating defect in 10kV feeder protection device without cutting off power

A technology of feeder protection and protection devices, which is applied in the direction of emergency protection circuit devices and electrical components, can solve the problems of reducing the reliability of distribution network power supply, more preparation work, and cumbersome operations, so as to shorten the time for eliminating defects, liberate labor, and improve reliability effect

Active Publication Date: 2014-01-22
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

In the prior art, when a 10kV protection device fails, a power outage is required to eliminate equipment defects (hereinafter referred to as defect elimination), and the 10kV protection device must be powered off, which requires applying for a power outage of the 10kV line one week in advance, one to two days in advance Prepare maintenance tools and materials, and a large part of the time during the power outage of the entire protection device is used for the power outage inspection work of the 10kV line by the operation and maintenance personnel and the power transmission work after the completion of the fault elimination work. The operation is cumbersome and the preparation Too much work, low efficiency, and once the power is cut off, it will have a great impact on users, reducing the reliability of distribution network power supply

Method used

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  • Method for eliminating defect in 10kV feeder protection device without cutting off power
  • Method for eliminating defect in 10kV feeder protection device without cutting off power
  • Method for eliminating defect in 10kV feeder protection device without cutting off power

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Embodiment Construction

[0020] The present invention will be further described below in combination with specific embodiments.

[0021] The method for eliminating defects without power failure of 10kV feeder protection device includes the following steps:

[0022] (1) Provide the 10kV feeder original protection device and a set of backup protection device. The control circuit, voltage and current circuit, circuit breaker, current secondary circuit and voltage secondary circuit of the backup protection device are the same as the original protection device;

[0023] (2) Refer to the attached figure 1 And attached figure 2 , the original protection device leads the current, voltage, position of the circuit breaker and opening and closing contacts from the 10kV terminal block; the main core of the original protection device adopts the RCS_9611C processing unit;

[0024] (3) See attached image 3 And attached Figure 4 , connect the trip contact 107, closing contact 109 and circuit breaker position c...

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Abstract

The invention relates to a feeder protection device defect eliminating method, in particular to a method for eliminating a defect in a 10kV feeder protection device without cutting off power. When the defect in the 10kV feeder protection device is required to be handled, a full-hardware substitution method is adopted, the original protection device is doubly configured by adopting a dual-loop parallel connecting method for the current and voltage loop of the protection device and a standby protection device substitutes for the original protection in operation to protect a 10kV feeder in operation, so that the original protection device is out of operation after the original protection in operation is substituted by the standby protection device, the original protection device is put into operation through double configuration after the defect is eliminated, the power of the 10kV feeder is not required to be cut off, the goal of eliminating the defect in the 10kV feeder protection device without cutting off the power is realized on the premise that the line in operation is guaranteed not to be an unprotected state, the method is simple and convenient to operate, the efficiency is high and the line reliability is improved.

Description

technical field [0001] The invention relates to a defect elimination method for a feeder protection device, in particular to a defect elimination method for a 10kV feeder protection device without power failure. Background technique [0002] In the power grid system, the 10kV line undertakes the task of directly transmitting power to users. Therefore, there are strict requirements for the power failure time of the 10kV line and the reliability of the 10kV protection. In the prior art, when a 10kV protection device fails, it is necessary to perform a power outage to eliminate equipment defects (hereinafter referred to as fault elimination), and the 10kV protection device must be powered off, which requires applying for a power outage of the 10kV line one week in advance, one to two days in advance Prepare maintenance tools and materials, and a large part of the time during the power outage of the entire protection device is used for the power outage inspection work of the 10k...

Claims

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Application Information

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IPC IPC(8): H02H7/00
Inventor 郑南章曾麟余志强闫晓丽曾锦松陈彩凤阮詩峰蒋隆纤
Owner STATE GRID CORP OF CHINA
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