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Feed line protection processing method, storage medium and processor

A processing method and feeder protection technology, which is applied to emergency protection circuit devices, electrical components, etc., can solve problems such as long time delay for outgoing line protection, mismatching of multi-level feeder current protection, etc.

Active Publication Date: 2020-07-03
STATE GRID BEIJING ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides a feeder protection processing method, a storage medium and a processor, so as to at least solve the technical problems in the prior art of multi-level feeder current protection mismatch and excessively long out-line protection delay

Method used

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  • Feed line protection processing method, storage medium and processor
  • Feed line protection processing method, storage medium and processor
  • Feed line protection processing method, storage medium and processor

Examples

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Embodiment 1

[0030]According to an embodiment of the present invention, an embodiment of a feeder protection processing method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0031] figure 1 is a flowchart of a feeder protection processing method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0032] Step S102, a fault current limiter is connected to the feeder, wherein the feeder includes an upstream line and a downstream line, the fault current limiter is not activated when the upstream line is faulty, and the fault current limiter is activated when the downstream line is faulty;

[0033] The above-...

Embodiment 2

[0095] According to another aspect of the embodiments of the present invention, there is also provided a storage medium, the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute any one of the above methods.

Embodiment 3

[0097] According to another aspect of the embodiments of the present invention, there is also provided a processor, which is used to run a program, wherein any one of the above methods is executed when the program is running.

[0098] The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

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Abstract

The invention discloses a feed line protection processing method, a storage medium and a processor. The method comprises the steps that a fault current limiter is connected into a feed line, wherein the feed line comprises an upstream line and a downstream line, the fault current limiter is not started when the upstream line breaks down, and the fault current limiter is started when the downstreamline breaks down; and when the feed line failure occurs, protection action is executed based on the current difference between the upstream line and the downstream line and a pre-specified protectionsetting, wherein the protection setting includes protection setting constructed for upstream and downstream line protection II sections of the fault current limiter and setting for protection actiondelay of each level of line according to a superior and subordinate protection setting value matching relationship. According to the invention, the technical problems of multi-stage feed line currentprotection mismatch and overlong outgoing line protection delay in the prior art are solved.

Description

technical field [0001] The present invention relates to the field of relay protection of electric power systems, in particular to a feeder protection processing method, a storage medium and a processor. Background technique [0002] Due to its simple principle, simple wiring and low investment, current protection is widely used in distribution network lines. The operating current of the current stage I protection is set according to the three-phase short-circuit current at the end of the line at all levels under the maximum operation mode, and its protection sensitivity is verified according to the minimum operation mode when the two-phase short-circuit protection range is not less than 15% to 20%. However, with the rapid development of the urban distribution network, the lines are getting shorter and shorter, the line impedance is getting smaller and smaller, and the number of lines is increasing. Difficult to tune. For short lines, the current stage I protection may lose...

Claims

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Application Information

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IPC IPC(8): H02H7/26
CPCH02H7/26
Inventor 陈艳霞及洪泉李振兴于希娟吕立平谷君唐涛南徐绍军迟忠君万勇
Owner STATE GRID BEIJING ELECTRIC POWER