Anti-pollution flashover performance evaluation, early warning method and system for external insulation of power transmission and transformation equipment

Abstract

The invention provides power transmission and transformation equipment external insulation anti-pollution flashover performance evaluation and early warning methods and systems. With a geographical location as a reference framework, the relationship among power transmission and transformation equipment, a pollution area distribution map and an anti-pollution flashover configuration creepage distance range is built, and the power transmission and transformation equipment external insulation anti-pollution flashover performance evaluation in a current environment is carried out. The power transmission and transformation equipment external insulation anti-pollution flashover performance evaluation method comprises steps: power transmission and transformation equipment anti-pollution parameters are extracted, wherein the anti-pollution parameters comprise power transmission and transformation equipment measurement data and power transmission and transformation equipment attribute data; the corresponding relationship between a pollution area distribution map and an area of the power transmission and transformation equipment is built, and the environmental pollution grade of the area of the power transmission and transformation equipment and the corresponding anti-pollution flashover configuration creepage distance range are acquired; and according to the power transmission and transformation equipment anti-pollution parameter data, the pollution grade of the area of the power transmission and transformation equipment and the corresponding anti-pollution flashover configuration creepage distance range, power transmission and transformation equipment anti-pollution flashover performance evaluation is realized. The methods and the systems of the invention can be used for guiding maintenance and updating of the power transmission and transformation equipment, hidden power utilization dangers in a power grid are eliminated, the manpower cost is saved through an automatic scheme, and the market value is important.

Description

technical field [0001] The invention relates to the technical field of anti-pollution flashover of power transmission and transformation systems, in particular to an anti-pollution flashover performance evaluation and early warning method and system for external insulation of power transmission and transformation equipment. Background technique [0002] With the rapid development of my country's economy, air pollution is becoming more and more serious, and pollution flashover accidents on transmission lines caused by haze weather occur frequently, which seriously threatens the safe operation of my country's power system. The current main anti-pollution flashover measures in the power system are "regular cleaning" and "insulation in place, leaving a margin". "Regular cleaning" is to manually clean the lines and substation equipment regularly to prevent pollution flashover. "Insulation in place" means relying on the insulation level of power transmission and transformation eq...

AI Technical Summary

Problems solved by technology

[0003] The distribution map of polluted areas in the power system is the basis for guiding the external insulation configuration of power equipment, but the environmental pollution situation changes with the increase or decrease of pollution sources and climate changes, which will cause the insulation configuration of existing substations and transmission lines in some areas to fail. Meet the anti-pollution flashover requirements of the current environment

At present, the Ministry of Electric Power lacks an effective anti-pollution flashover performance evaluation and early warning method for the external insulation of power transmission and transformation equipment, and cannot detect substations and transmission lines with problems in time, resulting in hidden dangers in the safe use of electricity in the power grid.

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