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A method for comprehensive evaluation of insulator operating status

It is a technology of running status and comprehensive evaluation, which is applied in data processing applications, instruments, calculations, etc. It can solve the problem of test index connection, comprehensive action relationship, multi-index accumulation or multiplication relationship without consideration, and cannot fully reflect its operating status. Casualties and other issues, to achieve the effect of comprehensive and reasonable considerations, strong practicability and feasibility, and reduction of physical labor

Active Publication Date: 2020-08-11
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are a large number of ceramic, glass and composite insulators operating in the current power system. The role of insulators in the power system is mainly to electrically insulate and support wires and equipment. The failures of insulators mainly include fracture, impedance reduction and pollution flashover, etc. Often there will be problems in production, installation, operation and other links. Once the insulators have broken strings, flashovers and other faults, it is easy to cause serious consequences, which will cause damage to equipment to a large extent, and even lead to casualties and large-scale network disconnection accidents. , therefore, it is necessary to detect and evaluate the operating status of the insulators currently running on the grid
[0003] The operating performance of insulators mainly includes electrical insulation performance and mechanical strength performance. The performance of these two aspects is determined by many factors. For insulators that have been produced and run on the grid, it will be preliminarily judged whether their electrical and mechanical performance indicators are based on the results of sampling tests. To meet the operational requirements, the existing method is mainly to conduct random inspection tests on a single indicator in combination with national standards and industry standards, but the single test result cannot fully reflect its operating status. The accumulative or multiplicative relationship of the insulators has not been considered, which puts forward new requirements for the comprehensive evaluation of the insulator operating status

Method used

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  • A method for comprehensive evaluation of insulator operating status
  • A method for comprehensive evaluation of insulator operating status
  • A method for comprehensive evaluation of insulator operating status

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Please refer to figure 1 , a method for comprehensively evaluating the operating state of an insulator, the insulator being a ceramic insulator, comprising the following steps:

[0036] Step 1. Obtain several types of insulators and design parameters of the insulators. There are 14 design parameters including: disk diameter parameters, structural height parameters, creepage distance parameters, axial offset parameters, radial offset parameters, Mechanical failure load parameters, residual mechanical strength parameters, zinc layer thickness parameters, zinc sleeve exposed quality parameters, zinc ring quality parameters, insulation resistance parameters, impact breakdown test parameters, temperature cycle test parameters, locking pin test parameters;

[0037] Step 2. Obtain the actual measured values ​​of the insulator parameters by testing several insulators;

[0038] Step 3. After comparing the actual measured value of the insulator with the design parameters, perfor...

Embodiment 2

[0067] The difference between this embodiment and Embodiment 1 is that the insulator is a glass insulator, and there are 15 design parameters including: disk diameter parameter, structural height parameter, creepage distance parameter, axial offset parameter, radial offset parameter, Shift parameters, mechanical failure load parameters, residual mechanical strength parameters, zinc layer thickness parameters, zinc sleeve exposed quality parameters, zinc ring quality parameters, insulation resistance parameters, impact breakdown test parameters, temperature cycle test parameters, locking pin test parameters, Thermal shock test parameters. The specific process of the dimensionless processing of the actual measured value percentage system is as follows:

[0068]

[0069]

[0070]

Embodiment 3

[0072] The difference between this embodiment and Embodiment 1 is that the insulator is a composite insulator, and there are 9 design parameters including: insulation distance parameters, structural height parameters, creepage distance parameters, hydrophobicity test parameters, and boiling test parameters , Inspection parameters of end parts sealing, power frequency dry withstand voltage test parameters, steep slope impulse voltage test parameters, mechanical destructive test parameters. The specific process of the dimensionless processing of the actual measured value percentage system is as follows:

[0073]

[0074]

[0075]

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Abstract

The invention discloses a method for the comprehensive assessment of an operation state of an insulator, and the method comprises the following steps: obtaining the types of a plurality of insulatorsand the design parameters of the insulators; obtaining the actual measured values of the parameters of the insulators; comparing the actual measured values of the parameters of the insulators with thedesign parameters, and then carrying out the centesimal system dimensionless processing, thereby obtaining dimensionless values corresponding to the actual measured values; building a set parameter vector through taking the dimensionless values corresponding to the actual measured values as parameters, and building a parameter matrix of the dimensionless values of the parameters of the insulatorsthrough taking the vector as a column parameter; carrying out the correlation degree processing of the parameter matrix, and obtaining a correlation degree matrix of the parameter matrix; solving a feature root matrix of the correlation degree matrix and a feature vector matrix; calculating a reliability coefficient of the insulator corresponding to a feature root; calculating the comprehensive score of the operation state of the insulator, and judging the overall operation state according to a scoring result. The method can save the line patrol manpower and material resources, and reduces the high labor intensity of the line patrol workers.

Description

technical field [0001] The invention relates to the technical field of insulator detection and evaluation, in particular to a method for comprehensive evaluation of the operating state of an insulator. Background technique [0002] There are a large number of ceramic, glass and composite insulators operating in the current power system. The role of insulators in the power system is mainly to electrically insulate and support wires and equipment. The failures of insulators mainly include fracture, impedance reduction and pollution flashover, etc. Often there will be problems in production, installation, operation and other links. Once the insulators have broken strings, flashovers and other faults, it is easy to cause serious consequences, which will cause damage to equipment to a large extent, and even lead to casualties and large-scale network disconnection accidents. , therefore, it is necessary to detect and evaluate the operating status of the insulators currently runnin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06G06Q10/00
CPCG06Q10/0635G06Q10/0639G06Q10/20G06Q50/06
Inventor 杨跃光陈禾樊友平孙晓瑜
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID