Power distribution network distribution circuit fault location system

A technology for distribution lines and fault location, applied in the field of power systems

Inactive Publication Date: 2008-10-08
CHONGQING UNIV
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  • Power distribution network distribution circuit fault location system
  • Power distribution network distribution circuit fault location system
  • Power distribution network distribution circuit fault location system

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[0035] The present invention will be further described below with reference to a non-limiting embodiment given in the accompanying drawings.

[0036] see figure 1 : The distribution network distribution line fault location system in the figure includes measurement and communication unit A, PC and GSM terminal C, and can also include a hand-held GPS locator B, wherein:

[0037] 1. The measurement and communication unit is composed of the central processing unit 1 of the measurement and communication unit, the GSM module 2, the power supply 3 of the measurement and communication unit, and the signal acquisition module 4. The connection relationship is: the output terminal of the signal acquisition module and the measurement and communication The A / D terminal of the central processor of the unit is connected, the GSM module is connected with the serial port of the central processor of the measurement and communication unit, the power supply of the measurement and communication un...

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Abstract

The invention relates to a power distribution network distribution circuit fault location system, including a plurality of measurement communication units A, PC and GSM terminals C. The input ends of the signal capture module of each measurement and communication unit are respectively connected with the auxiliary terminals of the three phase of the distributing transformer to be measured; messages are transmitted between the GSM module of each measurement and communication unit and the GSM module of PC and GSM terminals in a wireless communication mode. The inventive fault location includes: establishing a main wiring scheme according to the power supply power tidal current direction and connected relation of the transformer and bus, and endowing geographical information to each transformer; establishing an associated matrix, condition matrix and fault point locating matrix, locating the position of the fault by the fault point locating matrix, thereby implementing power distribution network distribution circuit remote failure diagnosis and locating, rapidity judging the fault section, saving maintenance time and having an effective function to the safe stable operation of the electrical distribution network.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a system for locating fault points of distribution network lines. Background technique [0002] Most of the transmission lines and distribution lines of the power system are exposed in the air, so they are most vulnerable to lightning strikes, causing power supply interruptions, power supply equipment damage and other accidents. Typical fault types are phase loss, disconnection, The voltage drop and other human factors caused the wrong connection between the line voltage and the phase voltage neutral line, causing overvoltage damage to the electrical equipment. When a transformer or line fails, the power department is often unable to determine the type of fault, the location of the transformer and the line it belongs to in a short period of time, which brings great inconvenience to power users and the power department. It is estimated that for a 500kV transmissi...

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Application Information

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IPC IPC(8): G01R31/08
Inventor 张占龙李冰毛玉星何为邓军王科
Owner CHONGQING UNIV
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