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Overhead line fault quick search auxiliary device and method

A technology for overhead lines and auxiliary devices, which can be applied to fault locations, fault detection by conductor type, short-circuit testing, etc.

Pending Publication Date: 2021-03-26
GUANGXI POWER GRID CO LTD NANNING POWER SUPPLY BUREAU
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an auxiliary device and method for quickly finding faults in overhead lines, which can solve the problem of manual boarding to find grounding faults in the prior art, and the need for manual boarding to untie the tension-resistant drainage jumper, which consumes a lot of manpower and material resources. The problem of expanding the fault range generated by the test

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  • Overhead line fault quick search auxiliary device and method
  • Overhead line fault quick search auxiliary device and method
  • Overhead line fault quick search auxiliary device and method

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Embodiment Construction

[0025] Embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

[0026] Embodiments of the present disclosure are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. The present disclosure can also be implemented or applied through different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, a...

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Abstract

The invention provides an overhead line fault rapid searching auxiliary device and method. The auxiliary device comprises a high-voltage input port, three ampere meters, an intermediate relay and three output ends, wherein the high-voltage direct current is connected to the high-voltage input port and is divided into three branch currents; the three branch currents respectively pass through threeampere meters and then are connected to one ends of three normally open contacts of the intermediate relay; and the other ends of the three normally open contacts of the intermediate relay are respectively connected with three output ends. According to the invention, the problems that hidden and high-resistance grounding faults need to be found by climbing a pole manually, and a large amount of manpower and material resources are consumed by climbing the pole to unfasten a strain drainage jumper wire are solved. The method is free of segmented remote measurement, so that the fault range is prevented from being expanded.

Description

technical field [0001] The invention relates to the field of electric power detection and monitoring, in particular to an auxiliary device and method for quickly finding an overhead line fault. Background technique [0002] Most of the existing 10kV distribution lines adopt the "three-phase three-wire" power supply mode with the neutral point not grounded. This distribution line power supply mode changes the insulation level of the distribution line, reduces the tripping rate of the distribution line, and improves the reliability of power supply. However, in the actual operation of the new power supply mode, single-phase ground faults often occur, especially in severe weather conditions such as strong winds and thunderstorms. Ground faults occur frequently, which seriously affects the safety and economy of substation equipment and distribution networks. run. [0003] When a line grounding fault occurs, the dichotomy method is often used to check that there is no section sw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/52
CPCG01R31/085G01R31/52
Inventor 农明泳赵钢陈勇李炎黄健黄宗尚李俊杰祝华阳廖炬福余超
Owner GUANGXI POWER GRID CO LTD NANNING POWER SUPPLY BUREAU
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