Method for predicting overhead line wind load outage probability

Abstract

The invention discloses a method for predicting the overhead line wind load outage probability, can conveniently and rapidly predict the wind load outage probability of an overhead line, and can master weak lines for important protection before strong wind comes. The method can ensure safe and stable operation of a power grid.

Description

technical field [0001] The invention relates to a method for predicting the outage probability of an overhead line under wind load. Background technique [0002] At present, in the risk research of overhead lines, the design department considers the problem of obtaining the fixed value of the allowable carrying capacity of the line, and the dispatching department pays attention to the change value obtained with the probability distribution of real-time temperature and wind speed to adjust the line power online. The research difficulty is that it is difficult to correct Given the probability distribution of weather forecast and temperature, the impact of disaster weather on the operation of the distribution network is more direct and obvious. In disaster weather such as strong winds and thunderstorms, the probability of equipment failure increases greatly. [0003] When a strong wind disaster occurs, the overhead line will be subjected to a large wind pressure. When the stres...

AI Technical Summary

Problems solved by technology

However, at present, it is difficult to correctly predict the wind load outage probability of overhead lines. Therefore, it is necessary to establish an overhead line outage model under the influence of strong winds. Before the arrival of strong winds, weak lines should be obtained in advance, and key protection should be carried out to ensure the safe and stable operation of the power grid.

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