Safety early warning method and device for distribution network system under typhoon

Abstract

The invention discloses a safety early warning method and device for a distribution network system under typhoon. The method comprises the following steps: solving a preset typhoon wind field model toobtain target typhoon information of all target point positions at each moment; calculating a conductor failure probability and a conductor transfer load at each moment according to the target typhoon information and the conductor basic information; based on a preset adjacency matrix, conducting vector accumulation on the wire transmission load of the target point position at each moment to acquire a total wire transmission load, wherein the preset adjacency matrix is used for describing the connection relation between the electric pole and a wire; calculating an electric pole failure probability of the target point position at each moment according to the total wire transmission load and the electric pole basic information; and performing safety early warning operation on the target distribution network system according to the wire failure probability and the electric pole failure probability. According to the application, the technical problems that the existing distribution networksafety research under typhoon does not have universality and does not analyze the safety early warning of the whole distribution network can be solved.

Description

technical field [0001] The present application relates to the technical field of power grid security, and in particular to a safety warning method and device for a distribution network system under a typhoon. Background technique [0002] The transmission network and distribution network are collectively referred to as the power grid, which is an important part of the power system. High-voltage transmission lines usually use steel structure iron towers, which are relatively stable, have a long design return period, and have a relatively low failure probability. The supporting structures of medium and low-voltage power distribution lines are usually concrete poles, and it is very common for poles to collapse and break under typhoons. At present, foreign research on typhoon disasters in power networks mainly focuses on the following aspects: 1) Predict the damage of power system components and power grid interruption before the typhoon lands; Optimal recovery strategy; 3) Rei...

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Problems solved by technology

[0004] This application provides a safety warning method and device for a distribution network system under a typhoon, which is used to solve the problem that the existing distribution network security research under a typhoon is not universal , and there is no technical problem for analyzing the security warning of the overall distribution network

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