Remote online observation system of power system lightning stroke

In order to carry out remote real-time investigation on exact causes of lightning accident in power systems, a kind of power system lightning remote online observation system based on lightning optical trigger and video pre-recording function was developed. The camera records the video before and after the lightning optical triggering. It has realized lightning stroke video collection and remote wireless transmission, and the video data can be accessed by special software on the server through frame by frame analysis. Four sets of the equipment have been running online in two 10 kV and one 35 kV distribution line of Shanghai power grid, and hundreds of intracloud lightning videos and 20 videos that lightning stroke on nearby ground of distribution lines are obtained after one storm season operation. The results of ground flash videos, distribution line lightning tripping statistical data, distance between stroke points in lightning location system and the distribution line position, electric parameter data obtained from Shanghai power production management system (PMS) are compared, and the observation result is consistent with operation statistics of power grid.