Lightning warning method applicable to distribution networks

Abstract

The invention relates to a lightning warning method applicable to distribution networks, which includes any of the following sub methods or a combination of a plurality of sub methods. In a first sub method, lightning is detected using a multi-vector photo-magnetic complex-mode induction technology to get the type, direction and relative distance of lightning, and a warning is then issued according to the type, direction and relative distance. In a second sub method, a power grid is partitioned, and a warning is issued according to the connection relationship of the partitions. In a third sub method, the lightning warning level is adjusted according to the real-time operation state of a power grid. In a fourth sub method, whether it is intra-cloud lightning or cloud-to-ground lightning is detected and identified, and a warning is issued according to the result of detection and identification. In a fifth sub method, a warning is issued by integrating real-time lightning detection data and near-earth electric field detection data. Through one sub method or the combination of a plurality of sub methods, the power flow distribution condition, the real-time load condition and the lightning protection of equipment in a power grid are considered, and the accuracy of power grid lightning warning can be improved.

Description

technical field [0001] The invention relates to the field of lightning detection and early warning, in particular to a lightning early warning method suitable for distribution networks. Background technique [0002] At present, the trend of global climate change is obvious, extreme weather is increasing, and lightning activities are more frequent and severe than before. Lightning has always been a major natural factor that endangers the safety of power grids. Every year, more than 30% of power outages in the United States, and more than half of power grid disturbances and blackouts in Europe are caused by lightning. In my country, more than half of the blackouts in coastal provinces are caused by lightning. Often a thunderstorm in summer can cause hundreds of power supply lines in a regional power grid to trip, causing a large number of users to lose power. During peak electricity consumption days, it may also cause a large-scale shock to the power grid, resulting in larg...

AI Technical Summary

Problems solved by technology

In actual power grid operation, simply relying on traditional methods will lead to false alarms, high false alarm rates, and low early warning accuracy, which cannot meet the needs of effective lightning early warning for the power grid.

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