1000 kV输电线路架空地线取能电压仿真分析

Simulation and Analysis of Energy Taking Voltage on Overhead Ground Wire of 1000 kV Transmission Line

通过PSCAD电磁暂态仿真软件仿真了浙江通道可视化项目中的1000 kV交流同塔双回湖安I线上的架空地线的取能电压,并对影响因素进行分析。根据已知的线路参数,采用双端电源的模式,两侧各安装一个容量为720 MVA的并联电抗器对电容电流进行补偿,计算出线路的各序分量参数,建立模型,并仿真计算出大方式下不同取能方式的取能电压幅值。除地导线距离、线路负荷等因素外,又增加了绝缘分段位置、单多点、取能位置、取能电阻等因素,补充、完善了地线感应取电技术应用中可能涉及的影响因素,丰富了地线感应取电场景,为地线感应取电技术的推广提供更全面的数据。

Through PSCAD electromagnetic transient simulation software,the energy taking voltage of overhead ground wire of 1000 kV AC double circuit Hu′an I line on the same tower in Zhejiang Channel Visualization Project was simulated,and the influencing factors were analyzed.According to the known line parameters,the two terminal power supply mode was adopted,and a 720 MVA shunt reactor was installed on both sides to compensate the capacitive current,and the sequence component parameters of the line were calculated.The model was established,and the voltage amplitudes of different energy extraction modes under large mode were simulated.In addition to the ground conductor distance,line load and other factors,the insulation segmented position,single and multi-point,energy taking position,energy taking resistance and other factors are added,which supplements and improves the influencing factors that may be involved in the application of ground wire induction power extraction technology,enriches the ground wire induction power extraction scenarios,and provides more comprehensive data for the promotion of ground wire induction power extraction technology.