太平湾电站地网接地电阻接地引下线截面的计算  

Calculation on Resistance Allowance of Grounding Network and Equipments’ Grounding Section Line of Taiping Bay Electric Power Plant

作　　者：杨恺 

机构地区：[1]宣城市水务局,安徽宣城242000

出　　处：《芜湖职业技术学院学报》2010年第2期40-43,共4页Journal of Wuhu Institute of Technology

摘　　要：通过对太平湾电厂220kV50Hz变电站地网接地电阻允许值和220kV设备接地引下线截面进行计算,可知系统容量变化导致系统阻抗发生变化。由于系统运行方式的不同,零序网络总阻抗也有所变化,因此变电站地网接地电阻允许值计算应考虑系统的最大运行方式。This paper puts a calculation on resistance allowance of220kV 50Hz substation＇s grounding network and 220kV equipments＇ grounding section line for Taiping Bay Electric Power Plant. Different system operations make total impedance difference of zero sequence net work. So the Maximum system operation must be considered when calculating on resistance allowance of grounding network. Moreover, Working frequency current division factor of grounding wire also effect calculating on resistance allowance of grounding network.

关 键 词：接地网 单相短路电流 正序网络 负序网络 零序网络 入地短路电流 引下线截面 接地电阻 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]