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Fault point positioning method for intelligent distribution lines

A technology of power distribution lines and positioning methods, which is applied in the direction of circuit devices, electrical components, information technology support systems, etc., can solve problems such as reducing the reliability of power supply, and achieve the effect of improving work reliability and fast and accurate positioning

Inactive Publication Date: 2012-08-01
国网安徽省电力有限公司合肥供电公司 +1
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  • Application Information

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Problems solved by technology

At present, when finding the fault point of the feeder, it is relying on the power workers to search the fault point one by one, which requires a lot of manpower, material resources and time, thus seriously reducing the reliability of power supply

Method used

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  • Fault point positioning method for intelligent distribution lines
  • Fault point positioning method for intelligent distribution lines
  • Fault point positioning method for intelligent distribution lines

Examples

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Embodiment Construction

[0017] see figure 1 , the fault point location method of intelligent distribution lines, each distribution line is divided into multiple sections, and a distribution column for detecting the fault current of this section of distribution line is installed on the distribution column of each section of distribution line. Electric column switch data terminal FTU; the power distribution system is also equipped with substation data terminal RTU, switching station and ring network cabinet data terminal DTU; the steps of the fault location method are as follows:

[0018] a. The substation collects the fault current data of each substation data terminal RTU, each switching station and ring main unit data terminal DTU, each distribution line and the distribution column switch data terminal FTU of each section of the distribution line;

[0019] b. The substation analyzes the fault current data, if the fault current of the T distribution line is greater than zero (or greater than the pre...

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Abstract

The invention discloses a fault point positioning method for intelligent distribution lines. Each of the distribution lines is divided into multiple sections, a distribution pillar of each section of each of the distribution lines is provided with a distribution pillar switch data feeder terminal unit (FTU) for detecting fault electric currents in the section of the distribution lines, and a distribution system is further provided with data remote terminal units (RTUs) for a transformer substation and data terminal units (DTUs) for a switching station and a ring main unit. When a distribution line fault occurs, a fault electric current is detected by RTUs, FTUs and DTUs from a bus to a fault point, RTUs, FTUs and DTUs outside the fault point can't detect the fault electric current, the fault electric current is zero, and fault points can be accurately detected according to the characteristic. The fault point positioning method for the intelligent distribution lines has the advantages of being capable of rapidly and accurately positioning the fault points of the distribution lines and improving functional reliability of the distribution lines and the like.

Description

technical field [0001] The invention relates to a method for locating fault points of intelligent power distribution lines. Background technique [0002] The 35kV and 10kV systems in the power system are ungrounded systems. When the 35kV and 10kV feeders fail, there is currently no good way to quickly and accurately find the fault point. The feeder is the power line that supplies power from the main substation to the secondary substation in the power distribution system. The feeder is composed of multiple distribution lines, and each distribution line is divided into multiple sections. The line structure of the feeder is as follows: image 3 shown. At present, when finding the fault point of the feeder, it is relying on the power workers to search the fault point one by one, which requires a lot of manpower, material resources and time, thus seriously reducing the reliability of power supply. Contents of the invention [0003] The present invention aims to avoid the disad...

Claims

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Application Information

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IPC IPC(8): H02J13/00
CPCY02E60/723Y04S10/16Y02E60/00
Inventor 何俊
Owner 国网安徽省电力有限公司合肥供电公司
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