A method and system for configuring ice-covered insulation for insulator strings of ultra-high voltage / extra-high voltage levels.

By calculating the altitude correction factor and pollution withstand voltage, and combining the relationship, the icing insulation configuration of the insulator string is determined, which solves the problem of the difficulty in simulating the flashover characteristics of icing insulator strings in high-altitude areas and realizes the accurate icing insulation configuration of insulator strings.

CN116243113BActive Publication Date: 2026-06-30CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
Filing Date
2022-10-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In high-altitude, cold, and humid regions, the icing flashover characteristics of insulator strings are difficult to accurately simulate in the laboratory, making it difficult to obtain icing flashover characteristic parameters and affecting the accuracy of insulation configuration.

Method used

By acquiring the insulator flashover voltage of the insulator string, calculating the altitude correction factor and pollution withstand voltage, and combining the relationship, the icing insulation configuration of the insulator string at different altitudes is determined. The data acquisition module and calculation module are used for systematic processing.

Benefits of technology

This invention enables the configuration of icing insulation for insulator strings at different altitudes and pollution levels, reduces the workload of testing, provides economical and reliable technical guidance, and solves the problem of simulating and controlling the icing state.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a method and system for configuring icing insulation for insulator strings at ultra-high voltage / extra-high voltage levels. It involves obtaining the flashover voltage of the first insulator string through artificial flashover experiments at different pollution levels and altitudes, determining the altitude correction coefficient for the first insulator string at different altitudes, as well as the flashover voltage and pollution withstand voltage of individual insulator pieces. Then, based on a second correction coefficient, a third correction coefficient, and the pollution withstand voltage, the flashover voltage of individual insulator pieces of the second insulator string at 0 meters altitude under natural conditions is determined. Finally, based on the altitude correction coefficient, system voltage, and the flashover voltage of individual insulator pieces of the second insulator string, the icing insulation configuration of the second insulator string is determined. This method and system are applicable to the design of polluted external insulation in ultra-high voltage / extra-high voltage transmission and transformation projects, significantly reducing the workload of testing and solving the problem of simulating and controlling the icing state of certain insulators.
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