Field operation and maintenance method for operation composite insulator based on performance evaluation

A composite insulator, field operation technology, applied in the direction of cable installation, cable installation device, electrical components, etc., can solve the problems of electromechanical performance degradation, etc., achieve the effect of reducing maintenance, avoiding failure, and strong operability

Active Publication Date: 2012-02-22
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During long-term operation, under the joint action of electrical, mechanical and external environments, the mechanical and electrical performance of composite insulators will be reduced due to factors such as humidity, partial discharge, corona, ultraviolet rays, chemical and biological attack.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with embodiment

[0014] 1) Electrical performance testing of composite insulators

[0015] (1) Hydrophobic test

[0016] a. Monitoring point selection

[0017] Set up a composite insulator "hydrophobic monitoring point" every 5-10km, and the monitoring point should be selected in the dirtiest section along the transmission line.

[0018] b. Detection cycle

[0019] According to the detection period stipulated in the DL / T 864 standard, combined with the specific operating environment of the composite insulator, it is determined that the composite insulator should be inspected for the first time after it has been running for the following time

[0020] Medium and below polluted areas (a, b, c level polluted areas): 10 to 12 years.

[0021] Heavily polluted areas (D-level polluted areas): 8 to 10 years.

[0022] Very heavily polluted areas (e-level polluted areas): 5 to 8 years.

[0023] Special he...

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PUM

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Abstract

The invention relates to a field operation and maintenance method for an operation composite insulator based on performance evaluation. The field operation and maintenance method is simple and strong in maneuverability. Electromechanical properties and physical and chemical properties of different batches of composite insulators in different operation environments are determined by combining operation detection with sampling inspection, and further a pointed operation and maintenance strategy is formulated. According to the field operation and maintenance method, unnecessary maintenance can be reduced and faults caused by improper operation maintenance of the composite insulator can be avoided. The field operation and maintenance method comprises the following steps of: firstly, determining electrical properties of the operation composite insulator; secondly, determining mechanical properties of the operation composite insulator; thirdly, determining the physical and chemical properties of the operation composite insulator; and fourthly, determining the operation and maintenance strategy of the operation composite insulator: analyzing and evaluating the electrical, mechanical and physical and chemical properties of the operation composite insulator, determining the operation state and the ageing condition of the composite insulator and pointedly formulating the operation and maintenance strategy for different operation composite insulators according to different conditions.

Description

technical field [0001] The invention relates to an on-site operation and maintenance method for an operating composite insulator based on performance evaluation, and belongs to the category of transmission line operation and maintenance. Background technique [0002] Because the silicone rubber composite insulator has good hydrophobicity and hydrophobicity migration, it has strong anti-fouling flashover ability, and has many advantages such as no zero inspection, no cleaning, light weight, convenient transportation and installation. Since the 1990s, composite insulators have been widely used in power systems and become one of the effective means to prevent pollution flashover accidents on transmission lines. [0003] During long-term operation, under the joint action of electrical, mechanical and external environments, the mechanical and electrical performance of composite insulators will be reduced due to factors such as humidity, partial discharge, corona, ultraviolet rays...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/00
Inventor 沈庆河梁曦东程学启慕世友王泽众
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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