Grid fault research and judge method based on fault indicator and public/specific transformer

A fault indicator, a technology for power distribution network faults, applied to fault locations, fault detection by conductor type, instruments, etc., can solve problems such as troubleshooting and restoration of power transmission, affecting power supply reliability, and difficulty in finding fault points. Achieve accurate fault judgment, improve the efficiency of allocation and grab work, and achieve the effect of effective integration

Active Publication Date: 2016-05-25
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology

In this way, if the line is long and located in a mountainous area, it is very

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  • Grid fault research and judge method based on fault indicator and public/specific transformer

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Embodiment Construction

[0021] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0022] Aiming at the problem that the fault indicator installed on the line cannot be used for monitoring and analysis in the blind area of ​​distribution network automation, thus affecting the efficiency of distribution and rush work, the present invention proposes a combination of fault indicator and public transformer data The fault research and judgment method realizes that when a fault occurs on the feeder, the distribution automation master station system can actively analyze and quickly locate the fault tripping device and the fault area, and provide the research and judgment results to the distribution personnel in time for line repairs, specifically including Follow the steps below:

[0023] Step S1: The distribution automation master station system establishes the memory topology of the primary equipment of the distribution netw...

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Abstract

The invention relates to a grid fault research and judge method based on a fault indicator and a public/specific transformer, the method comprises the steps: a distribution network topology model in a distribution automation master station system establishes the internal storage topology of distribution network primary equipment and records the historical topological relation before the equipment fault; when the fault occurs on a feeder, the distribution master station system performs preprocessing on a received fault indication signal to filter false information; combined with the historical topological relation, the distribution master station system performs researching and judging to quickly position a fault section according to flip operation of the preprocessing; combined with the historical topological relation and distribution transform historical data, the distribution master station system uses collected data interoperated with an usage and collection system to quickly position tripping equipment. According to the invention, the method can timely and quickly prompt a dispatcher and point out the fault section and tripping equipment, the efficiency and intellectuality during the fault emergency repairing process are improved, so that the line patrol range is greatly narrowed, the fault repairing time is shortened, and the efficiency of the power distribution repairing work is improved.

Description

technical field [0001] The invention relates to the field of power system distribution automation, in particular to a method for researching and judging distribution network faults based on fault indicators and public-specific transformers. Background technique [0002] At present, the fault indicators used in the installation of 10kV lines have played a positive role in the power supply department's fault line inspection, locking the fault range, improving line inspection efficiency, reducing labor intensity, and improving power supply reliability. The three-remote automation coverage of the suburban distribution network and rural distribution network lines in many areas is very low, and most lines mainly rely on the two-remote collection equipment. In the early application of the fault indicator, when a fault occurred on the line, the line inspectors used the alarm display of the indicator to determine the fault section and find the fault point. In this way, if the line i...

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088
Inventor 殷自力陈宇星李吉昌郑震张磊
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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