Intelligent power transmission network monitoring system for single-phase grounding short circuit fault

A short-circuit fault and single-phase grounding technology, applied in the field of transmission network monitoring, can solve problems such as the difficulty of fault location on transmission lines, achieve the effects of improving power supply reliability, improving accuracy, and avoiding data redundancy

Pending Publication Date: 2022-08-02
国网河南省电力公司永城市供电公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a single-phase-to-ground short-circuit fault intelligent transmission network monitoring system, which can solve the problem of difficult fault location of transmission lines

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  • Intelligent power transmission network monitoring system for single-phase grounding short circuit fault
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  • Intelligent power transmission network monitoring system for single-phase grounding short circuit fault

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[0021] This part will describe the specific embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Each technical feature and overall technical solution of the invention should not be construed as limiting the protection scope of the invention.

[0022] In the description of the present invention, it should be understood that the azimuth description, such as the azimuth or position relationship indicated by up, down, front, rear, left, right, etc., is based on the azimuth or position relationship shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

[0023] In the description of the present in...

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Abstract

The invention discloses an intelligent power transmission network monitoring system for a single-phase grounding short circuit fault, which relates to the technical field of power transmission network monitoring, and comprises a star topology structure type power distribution network with a main line taking a transformer substation as a center, a multi-branch power distribution network fault positioning platform, a mobile phone client and a web client, the main line is provided with branch lines, the branch lines are divided into corresponding branch network sections, each branch network section is provided with two PMU devices, and the two PMU devices are arranged at the start end and the tail end of a main transmission line of each branch network section respectively. The algorithm can be better tested, so that a more accurate fault distance measurement result is obtained, and meanwhile, a multi-branch power distribution network fault positioning platform is established, so that workers are effectively assisted in quickly finding and processing faults, the working efficiency is improved, the power failure time is shortened, and the power supply reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power transmission network monitoring, in particular to an intelligent power transmission network monitoring system for single-phase grounding short-circuit faults. Background technique [0002] At present, my country's distribution network generally adopts the operation mode of small current grounding. After a single-phase grounding short-circuit fault occurs, it is allowed to keep running with the fault for 1-2 hours, so as to improve the reliability of power supply. [0003] However, this operation mode makes the non-fault phase voltage after the occurrence of single-phase-to-ground fault rise to line voltage. Under the condition that the insulation level of the current distribution network equipment is generally not high, it is very likely that the single-phase-to-ground short-circuit fault will develop into a two-phase fault. Grounding short-circuit faults can even cause large-scale power outages, af...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08H04L67/1097
CPCG01R31/086G01R31/088H04L67/1097Y04S10/52
Inventor 董园芦亚林刘帆田地张萍
Owner 国网河南省电力公司永城市供电公司
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