摘要
分析研究3种750 kV输电线路向拉西瓦水电站供电方案,建立了相关750 kV输变电系统仿真计算模型,计算750 kV输电线路在不同方案下的潜供电流、恢复电压、工频过电压和操作过电压。通过计算结果比较和理论分析,从过电压防护角度选择合理的拉西瓦供电方案。
The paper analyzes three types power supply scheme of 750kV transmission line to Laxiwa hydropower station,and establishes relevant 750kV power transmission and distribution simulated calculation to obtain the secondary arc current,recovery voltage,power frequency overvoltage and switching voltage of 750kV transmission line using different power supply scheme.Through result comparing and theoretical analyzing,the paper proposes reasonable power supply scheme from overvoltage protection aspect.
出处
《青海电力》
2009年第A02期1-3,20,共4页
Qinghai Electric Power
