摘要
近年来,随着山西省内电力系统的快速发展,逐渐形成了以500k V为主要电压等级的"三纵四横"坚强电网格局。电网规模的逐年扩大及其构架的日益复杂,在加强电网的同时,也使得短路电流水平逐年攀升,局部电网尤其是山西北部500k V电网的短路电流水平超标已成为一个突出问题,影响到电力系统运行的可靠性。基于此,本文从研究局部电网的短路电流超标问题出发,拟利用几种不同的措施来限制降低短路电流水平,相关的研究结论可以为电网的安全稳定运行提供一定的借鉴意义。
In recent years,with the rapid development of power system in Shanxi Province,a "three horizontal and four vertical" strong power grid pattern of mainly 500kV voltage level is gradually formed.Being larger and more complex,the power system is actually strengthened,which also leads to the increasing level of short-circuit current.Exceeding the standard of short-circuit current of local power grid,especially in northern Shanxi 500kV power grid,has become an outstanding problem,which affects the reliability of power system operation.Based on the study of short-circuit current exceeding problem in local power grid,in this paper,several different measures to reduce short-circuit current level was discussed and analysed.The related research conclusions can provide some reference for the safe and stable operation of power system.
出处
《电子测试》
2016年第8期132-133,129,共3页
Electronic Test
关键词
500kV电压等级
电网结构
短路电流
限制措施
电网安全稳定运行
500kV voltage level
power grid structure
short-circuit current
limiting measures
safe and stable operation of power system