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Method for detecting fault of power line

A technology of fault detection and electric lines, applied in the direction of fault location, etc., can solve problems such as waste of manpower, short-circuit grounding, power grid problems, etc., and achieve the effect of highlighting substantive features and significant progress

Active Publication Date: 2015-05-20
BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, the known technology is that with the construction of the power grid, some power grid problems will appear correspondingly, especially problems such as short circuit and grounding, which will seriously affect the power consumption. Now the maintenance of the circuit depends on the staff to find faults along the wires point, so a lot of manpower is wasted, and the power supply cannot be restored in time, which is the deficiency of the existing technology

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  • Method for detecting fault of power line
  • Method for detecting fault of power line
  • Method for detecting fault of power line

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Embodiment Construction

[0010] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation manner.

[0011] The power line fault detection method of this program includes the following steps:

[0012] 1) Detect the current I in the simulated grid d； Current I d can be obtained directly from the fault recording system,

[0013] 2) Through the fault recording system, it can be judged whether the circuit fault is a short circuit or a ground, if it is a short circuit, go to step 3), if it is a ground, go to step 4);

[0014] 3) When three-phase short circuit occurs, according to the formula (where, Z S1 is the positive sequence impedance of the system, Z L1 is the positive sequence impedance of the line, and U is the voltage), the short circuit fault point x% can be obtained; when two phases are short circuited, according to the formula You can get the short-circuit fault point x% (where, Z S1 is the positive seque...

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Abstract

The invention provides a technical scheme of a method for detecting a fault of a power line. According to the method of the scheme, particularly the detection method of the scheme, the position of a fault point can be rapidly calculated, so as to conveniently and rapidly find and remove the fault point of the line and rapidly recover the power supply to a tripped line.

Description

Technical field: [0001] The invention relates to a power line fault detection method for simulating a power grid. Background technique: [0002] In the prior art, the known technology is that with the construction of the power grid, some power grid problems will appear correspondingly, especially problems such as short circuit and grounding, which will seriously affect the power consumption. Now the maintenance of the circuit depends on the staff to find faults along the wires Point, so promptly wasted a large amount of manpower, and can't restore power supply in time, and this is the weak point that existing technology exists. Invention content: [0003] The purpose of the present invention is to provide a technical solution for the fault detection method of power lines in view of the deficiencies in the prior art. The detection method of this solution can quickly calculate the fault point when the fault current in a certain place is known. location, so as to quickly fin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
Inventor 杨洪波赵泉刚杜明田薛莉钟文涛张海城高红梅
Owner BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER