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Automatic fault isolation system for power distribution network

A technology of distribution network fault and isolation system, applied in fault location, information technology support system, fault detection according to conductor type, etc., can solve the problems of low insulation level of equipment, inaccurate fault location, and urgent need to improve the reliability of power supply, etc. Achieve the effect of fast and accurate fault detection and positioning, and simple process flow

Inactive Publication Date: 2019-03-12
四川臻智时代自控科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] my country's distribution network has a large number and a wide distribution range. The insulation level of the equipment is low, and it is vulnerable to insulation accidents caused by the internal overvoltage of the power grid and the external natural environment. The reliability of power supply needs to be improved urgently.
Its main problems: overvoltage, line selection and positioning, large increase in system capacitor current, arc cannot be self-extinguished, etc.
[0004] However, in the current distribution network, not only the interference signal of the fault information collected by the fault acquisition device is too strong, but also there is the problem of inaccurate fault location

Method used

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  • Automatic fault isolation system for power distribution network

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Embodiment

[0022] Such as figure 1 As shown, a distribution network fault automatic isolation system includes a data acquisition device, a photoelectric isolation device, a main controller, a positioning device, a communication device, a data storage device, a data display device, a power supply device, a host computer, a cloud server and a user terminal; the data acquisition device includes a short-circuit sensor, a ground sensor, a current detection device and a voltage detection device, and the output terminals of the short-circuit sensor, the ground sensor, the current detection device and the voltage detection device are all connected to the The input terminal of the main controller, the main controller is also connected with the positioning device, communication device, data storage device and data display device respectively, and the main controller is also connected with the upper computer and the upper computer through the communication device The user terminal is connected to t...

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Abstract

The invention relates to an automatic fault isolation system for a power distribution network. The system comprises a data acquisition device, a photoelectric isolation device, a main controller, a positioning device, a communication device, a data storage device, a data display device, a power supply device, an upper computer, a cloud server and a user terminal. The system has a simple and automated structure and is very simple in process flow; faults are accurately positioned through the positioning device when a short-circuit problem, a grounding problem and a current or voltage failure happen to the power distribution network, and fault information and position information are sent through the communication device, so that rapid and accurate fault detection and positioning of the powerdistribution network are achieved.

Description

technical field [0001] The invention relates to the technical field of power distribution, in particular to an automatic fault isolation system for a power distribution network. Background technique [0002] my country's distribution network has a large number and a wide distribution range. The insulation level of the equipment is low, and it is vulnerable to insulation accidents caused by the internal overvoltage of the power grid and the external natural environment. The reliability of power supply needs to be improved urgently. Its main problems are: overvoltage, line selection and positioning, large increase in system capacitance current, arc cannot be self-extinguished, etc. [0003] In view of the above-mentioned main problems in the distribution network, in recent years, those skilled in the art have proposed the idea that the neutral point adopts the arc-suppression coil parallel resistance grounding method to select the line. From the perspective of the system, com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/02H02H7/26
CPCG01R31/086G01R31/50H02H7/262H02H7/263Y04S10/52
Inventor 高旭
Owner 四川臻智时代自控科技有限公司
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