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Power distribution network fault diagnosis method

A technology of distribution network faults and diagnosis methods, which is applied in the direction of fault location, fault detection according to conductor type, information technology support system, etc., and can solve problems such as low efficiency and low diagnostic accuracy

Active Publication Date: 2017-05-10
GUANGDONG POWER GRID CORP ZHAOQING POWER SUPPLY BUREAU
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Problems solved by technology

[0004] Based on this, it is necessary to provide a distribution network fault diagnosis method for the defects of low precision and low efficiency in the existing power grid fault diagnosis

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings by taking a large provincial power grid as an example. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] For example, a distribution network fault diagnosis method includes the step of building a model: constructing a full model of the power grid; obtaining the fault information step: obtaining the fault information of the feeder, and locating the feeder where the fault is located according to the fault information and the full model of the power grid; obtaining The step of fault indication information: obtain the fault indication information of the fault indicator, and locate the first fault zone where the fault is located according to the fault indication informa...

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Abstract

The invention relates to a power distribution network fault diagnosis method. The method comprises steps that a power grid full model is constructed; the fault information of a feed line is acquired, and the feed line with a fault is positioned according to the fault information and the power grid full model; the fault indication information of a fault indicator is acquired, and a first fault section with the fault is positioned according to the fault indication information and the power grid full model; a distribution transform power failure event of a distribution transformer is acquired, and first trip-out equipment with the fault is positioned according to the distribution transform power failure event and the power grid full model; the measurement drop information of a wire outgoing switch is acquired, and a second fault section and second trip-out equipment with the fault are positioned according to the measurement drop information and the power grid full model. Through the power distribution network fault diagnosis method, a fault generation line segment can be precisely acquired through the fault indication information, the distribution transform power failure event and the measurement drop information in combination with the power grid full model, and thereby fault diagnosis efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of grid fault diagnosis, in particular to a fault diagnosis method for a power distribution network. Background technique [0002] In the current distribution network monitoring, the dispatcher mainly relies on the collected distribution terminal two remote (remote signaling and telemetry) or three remote (remote signaling, telemetry, remote control) information for system monitoring, when the distribution network fails , relying on the switch displacement signal sent by the power distribution terminal and its related fault information to perform fault diagnosis, locate the fault area, and guide the distribution work accordingly. [0003] However, the distribution network has limited lines for feeder automation, and the coverage of power distribution terminals in some areas is low. Real-time monitoring cannot be carried out for feeders that are not connected to the second or third remote. The fault can only ...

Claims

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Application Information

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IPC IPC(8): G01R31/08
CPCG01R31/086Y04S10/52
Inventor 陈益哲高宜凡张杰明何宝华林世佳李玉宇梁妍陟潘嘉琪李明锶尹芬张磊许文波徐祗威
Owner GUANGDONG POWER GRID CORP ZHAOQING POWER SUPPLY BUREAU
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