500kV西郊站投产后天津西部电网解环方案分析  

Analysis of Decoupling Loop Scheme for Tianjin Western Power Grid after Operation of 500 kV Xijiao Substation

作　　者：李文波[1] 尹成竹[1] 闫方[1] 赵辰鹏[1] 王淼[1] 

机构地区：[1]国核电力规划设计研究院,北京市100095

出　　处：《电力建设》2013年第9期26-30,共5页Electric Power Construction

摘　　要：随着电网的不断加强,短路电流问题逐渐成为制约电网发展的重要因素,有效解决短路问题也成为地区电网发展应考虑的重中之重。天津西部电网目前维持电磁环网运行,随着电网的发展特别是西郊500 kV变电站的投产,天津西部220 kV电网短路水平超标问题日益凸显,解开天津西部220 kV电磁环网已是控制220 kV电网短路电流水平最直接有效的方式。结合西郊站的投产,对天津西部220 kV电网提出了2种解环方案,经过详细的短路、潮流、稳定计算分析,得出推荐方案;并对今后天津西部电网的发展提出了建议。With strengthening of power grid, the short-circuit current has gradually become the factor restricting the development of power grid. Therefore, the effective solutions of short circuit become the priority during the development of regional power grid. At present, the western power grid in Tianjin is in operation with electromagnetic loop network. However, with the development of the power grid, especially the commissioning of 500 kV Xijiao substation, short-circuit problem of the 220 kV western power grid in Tianjin is becoming more and more prominent. The most effective measure to solve such issue is to decouple the 220 kV electromagnetic loop of the power grid. Based on the operation of Xijiao substation, two decoupling loop schemes were proposed for the 220 kV western power grid in Tianjin, one of which was recommended with detailed calculations and analysis of power flow, short-circuit current as well as transient stability of the power grid. Furthermore, suggestions for the future development of western power grid in Tianjin were provided.

关 键 词：天津西部电网 短路电流 解环方案 潮流 稳定 

分 类 号：TM715[电气工程—电力系统及自动化]