Automatic simulation of transmission line backflashover rate base on ATP

The design of such a novel software application that can be used to calculate the backflashover rate of transmission line is presented. The software application was developed by combining ATP with VC++. The software structure and the input/output interface are provided, as well as the implementation details. In the calculation, compares the insulators´ volt-time curves to the overvoltage to judge the insulators´ behavior, considers the system voltage and the induced voltage´s influence on backflash lightning withstanding level. A total line backflashover rate calculation example shows that it´s convenient for estimating the backflashover rate of a total line and studying the effect of lightning performance improvement methods such as reducing grounding resistance with the software application. This software application´s design way is suitable for other transient calculation which using ATP.