Development of the Transmission Line Lightning Trip Evaluation System

In this paper, based on Visual C + +6.0 high-level programming language, it developed the transmission line lightning trip evaluation system, this system could complete differential Lightning protection calculation, evaluate the transmission line´s lightning performance and provide factor graphs of the lightning withstand level, with it user can take appropriate measures for lightning protection. In this paper, it selected a actual transmission line of Shenyang Power Supply Company to calculate, the result proved this system can be applied in transmission line lightning protection calculation in actual power system.