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Power distribution network fault distance measurement method and system and integrated traveling wave distance measurement device

A traveling wave ranging device and a technology for distribution network faults, which are applied in the direction of measuring devices, fault locations, information technology support systems, etc., to achieve the effect of simple construction and low cost

Inactive Publication Date: 2020-09-18
NR ELECTRIC CO LTD +1
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Problems solved by technology

[0003] The present invention provides a distribution network fault distance measurement method, system and integrated traveling wave distance measurement device, which solves the problems disclosed in the background technology

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  • Power distribution network fault distance measurement method and system and integrated traveling wave distance measurement device
  • Power distribution network fault distance measurement method and system and integrated traveling wave distance measurement device
  • Power distribution network fault distance measurement method and system and integrated traveling wave distance measurement device

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0031] A fault location method for a distribution network, comprising the following steps;

[0032] Step 1: Carry out fault segmentation.

[0033] Step 2, according to the result of fault section determination and the collected power frequency voltage / current, the impedance method is used to measure the fault location.

[0034] Step 3, according to the result of fault section determination and the collected effective traveling waves, use the single-end traveling wave ranging method / double-end traveling wave ranging method to perform fault location.

[0035] Since the traveling wave signal is usually weak, the traveling wave start is usually set to be more sensitive. In order to prevent frequen...

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Abstract

The invention discloses a power distribution network fault distance measurement method and system and an integrated traveling wave distance measurement device. According to the method, fault section determination is carried out to reduce the fault range, then impedance method distance measurement and traveling wave distance measurement are carried out, and all distance measurement results are integrated to obtain an accurate distance measurement result. The device is additionally provided with a distance measurement function on the basis of a conventional power distribution terminal, does notneed an additional independent device, is low in cost and is simple in construction.

Description

technical field [0001] The invention relates to a distribution network fault distance measurement method, system and integrated traveling wave distance measurement device, belonging to the field of distribution automation. Background technique [0002] In the distribution network, the accurate and fast search for line faults can effectively reduce the pressure and burden of the staff on line inspection, shorten the fault repair time, further improve the safety and reliability of power supply, reduce the faults caused by power outages, and reduce the power failure caused by power outages. Loss. Existing power distribution terminals cannot accurately realize fault location, and adding a fault location device alone is costly and difficult to construct. Contents of the invention [0003] The invention provides a distribution network fault distance measurement method, system and integrated traveling wave distance measurement device, which solves the problems disclosed in the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088Y04S10/52
Inventor 高超陈玉林曾先锋王霄翔朱中华侯炜郭自刚王彦国
Owner NR ELECTRIC CO LTD
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