Lightning stroke flashover early warning method and system based on historical information

Abstract

The present invention discloses a lightning stroke flashover early warning method and system based on historical information. The method comprises: collecting the historical information of the lightning stroke, dividing the historical information of the lightning stroke into a lightning stroke flashover and non-flashover of the lightning stroke, and constructing a KD tree according to the historical information of the lightning stroke; when the lightning stroke happens, obtaining the lightning stroke information to be subjected to early warning through the real-time monitoring of an atmospheric electric field and the like, and employing the KD tree nearest neighbor search algorithm to search K neighbor points of the lightning stroke information to be subjected to early warning; and finally determining the category of the information to be subjected to early warning through adoption of the K neighbor algorithm to output an early warning result. The early warning result through the method provided by the invention is more accurate.

Description

technical field [0001] The invention relates to the technical field of lightning flashover early warning, in particular to a lightning flashover early warning method and system based on historical information. Background technique [0002] The power system is an important part of the national economy and social development. In recent years, with the rapid expansion of China's power grid, the damage caused by lightning strikes has become more and more serious. According to the statistics of the operation and maintenance department, lightning strikes are still a huge factor for the tripping and instability of the transmission system, posing a serious threat to the safety and stability of the power grid. An effective lightning monitoring and early warning system can forecast lightning accidents before they occur, and provide auxiliary decision-making for the line operation plan of the power dispatching department. Therefore, an effective alarm method is of great significance ...

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the current research methods are generally for early warning or forecasting whether lightning occurs in a certain area, and cannot provide early warning for flashover risks caused by transmission lines, scholars from the National Electric Power Research Institute proposed to establish a flashover early warning process by monitoring real-time meteorological information method for early warning

However, the prior art has the disadvantage that the early warning results are not accurate enough.

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