On-site intelligent full-delay stage difference coordination method employing feeder automation and application

A feeder automation and differential coordination technology, applied in the direction of automatic disconnection of emergency protection devices, electrical components, circuit devices, etc., can solve problems such as large short-circuit current, enlarge power failure area, and reduce power supply reliability, and achieve the effect of avoiding impact.

Inactive Publication Date: 2018-11-06
西安兴汇电力科技有限公司
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Problems solved by technology

[0006] (1) Any point of failure in the distribution line will cause the outlet switch of the substation to trip, which will cause a power outage on the whole line, expand the power outage area, and reduce the reliability of power supply;
[0007] (2) When the distribution line is permanently faulty, the outlet switch of the substation must be re

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  • On-site intelligent full-delay stage difference coordination method employing feeder automation and application
  • On-site intelligent full-delay stage difference coordination method employing feeder automation and application
  • On-site intelligent full-delay stage difference coordination method employing feeder automation and application

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[0046] 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 embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] The on-site intelligent feeder automation full-delay differential coordination method requires that the intelligent terminals of the distribution line all use circuit breakers, with three-stage overcurrent protection functions, closing when there is pressure delay, reclosing at fault locking, and delay automatic unlocking functions , also has ground fault judgment and protection functions.

[0048] Since the full-delay differential coordination method takes effect when the delay margin of the substation is large, it is suitable for the coordination of delayed quick-break protection or overcu...

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Abstract

The invention relates to an on-site intelligent full-delay stage difference coordination method employing feeder automation and an application. The advantages of ''on-site isolation'' of relay protection and ''self-recovery'' of feeder automation are combined and the power outage range is preferentially reduced to the greatest extent through the on-site isolation of relay protection in case of a line fault; and if the time delay margin of substation protection is large, full-delay stage difference coordination is formed through the substation protection and a feeder terminal to ensure the protection selectively, that is to say, the fault of any point is isolated through local protection, a non-fault area is not powered off and function self-recovery is achieved through the feeder automation in a transient fault.

Description

technical field [0001] The invention relates to the field of wiring fault inspection and maintenance, in particular to an on-site intelligent feeder automatic full-delay differential coordination method and mode application. Background technique [0002] Feeder automation is the use of automation devices or systems to monitor the operating status of the distribution network, detect faults in the distribution network in time, and perform fault location, isolation, and restoration of power supply to non-faulty areas. In recent years, for different types of power supply areas, the construction of intelligent distribution network adopts the principle of differentiation, and the fault handling of feeder automation can adopt centralized and local models. Local feeder automation does not rely on communication, and completes fault handling through equipment self-protection or timing cooperation. The traditional recloser-type feeder automation is divided into voltage time type, volt...

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Application Information

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IPC IPC(8): H02H7/28H02H3/06
CPCH02H7/28H02H3/066
Inventor 郭琳云赵明江揣超智郑宇翔李为韬焦玉涛卫春喜
Owner 西安兴汇电力科技有限公司
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