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A power transmission line insulator distributed leakage current monitoring device

A leakage current and transmission line technology is applied in the field of distributed leakage current monitoring devices of transmission line insulators, which can solve the problems of hidden safety hazards, high cost and high measurement cost, and achieve the effect of avoiding pollution flashover and ensuring safe and stable operation.

Active Publication Date: 2016-01-20
STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the current method of monitoring leakage current is costly. A single device can only measure one current, and the cost of multiple measurements is high. In addition, the sensor is connected to the device, which poses a great safety hazard.

Method used

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  • A power transmission line insulator distributed leakage current monitoring device
  • A power transmission line insulator distributed leakage current monitoring device
  • A power transmission line insulator distributed leakage current monitoring device

Examples

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0020] figure 1 It is a schematic diagram of the overall structure of the present invention, wherein 11-monitoring ring, 12-transmission line insulator string, 13-conductor, 14-cross arm, 15-communication station. The present invention adopts the following technical scheme: a distributed leakage current monitoring device for transmission line insulators, which is characterized in that it includes several monitoring rings 11 and communication stations 15, the monitoring rings 11 communicate with the communication stations 15 through wireless communication, and the monitoring rings 11 are set in On the steel cap on the upper surface of the transmission line insulator 12, an insulator is arranged ...

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Abstract

The invention discloses a power transmission line insulator distributed leakage current monitoring device characterized in that the power transmission line insulator distributed leakage current monitoring device comprises several monitoring rings and a communication station; the monitoring rings carry out communication with the communication station through wireless communication; the monitoring rings sleeve steel caps of the upper surfaces of power transmission line insulators; insulating parts are arranged below the steel caps; the communication station is arranged between power transmission line towers which are provided with the monitoring rings; and the monitoring rings are used for recording amplitudes of leakage currents of the insulators and transmit information about the amplitudes of leakage currents of the insulators to the communication station through wireless communication. The communication station is used for controlling the monitoring rings, and transmits information about the amplitudes of leakage currents of the insulators to a remote terminal after gathering so as to motor the states of the insulators at any time. According to the invention, pollution degrees of the insulators are monitored by means of monitoring the insulator leakage currents to carry out pollution flashover early warning to further avoid occurrence of pollution flashover of the power transmission line insulators and guarantee safe and stable operation of an electric power system.

Description

technical field [0001] The invention relates to a distributed leakage current monitoring device for transmission line insulators, belonging to the technical field of on-line monitoring for transmission line insulators. Background technique [0002] Transmission line insulators have been exposed outdoors for a long time. Due to factors such as natural ash fall and industrial pollution, dirt will adhere to the surface to form a dirt layer. In a dry state, the dirty layer generally does not conduct electricity, and has little effect on the electrical performance of the external insulation; but in an environment with high humidity, the dirty layer will absorb moisture and get damp, so that the soluble electrolyte in the dirty layer dissolves, and the dirty layer starts to conduct electricity, contaminating the insulator The surface will flow a certain magnitude of leakage current, which will gradually develop into partial discharge. When the arc develops and runs through the up...

Claims

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Application Information

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IPC IPC(8): G01R31/02G01R19/25G08C17/02
Inventor 张佰庆高嵩崔艳东郑秋玮杨帅刘贞瑶张伟刘思逸周文俊童维占褚洪雷
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH
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