国网典型设计变电站高低构架出线的防雷保护

Protection against Lightning of Outgoing Line from High-Low Framework in Substation of State Grid with Typical Design

近年来国家电网公司的"输变电工程典型设计"得到广泛的推广应用,其中新型变电站设计中多采用高低构架联合出线,减少了占地,但会带来变电站出线档防雷保护设计复杂的问题。利用Matlab设计出对架空地线的防雷范围进行图像化显示和计算机辅助分析的应用软件,使用方法简洁。在多个变电站设计中得到应用,具有良好的推广价值。

The typical design of power transmission and transformation project of State Grid Corporation of China is widely used recently. In order to reduce the area, the high - low framework is adopted in the design of new substation. But it will lead to the complicated design of protection against lightning in outgoing line of substation. Based on Matlab, a computer - aided anal- ysis and displaying software is developed for the protection against lighting of overhead grounding wire in substation, which is simply to use. This software has been promoted in the design of several substations.