Research on Lightning Disaster Prevention System Based on Computer Big Data Simulation

In this paper, the structure characteristics of discharge tube and varistor of lightning protector in smart grid and the principle and advantages and disadvantages of discharge tube lightning protection are briefly discussed. According to the lightning protection function and working state characteristics of the low voltage arm of DC divider, the corresponding transfer function is set up. Secondly, the lightning protection simulation module of discharge tube and varistor based on EMTP software platform is established. On this basis, the whole simulation model of the secondary partial voltage circuit is derived. The working experiment circuit is set up in the electromagnetic compatibility laboratory of the working unit. After adjustment and improvement, the best lightning protection mode of smart grid is obtained. The lightning overvoltage model of ±500kV DC side of smart grid was built in PSCAD/EMTDC for simulation analysis. Simulation results verify the effectiveness and feasibility of the proposed method.