SVC对云南电网输电能力的影响

SVC Influences on the Transmission Capacity of Yunnan Power System

从提高输电能力方面研究交换虚拟电路(Swithing Virtual Circact,SVC)的影响。通过基于时域仿真的输电能力和基于功率传输路径的电压稳定性分析,确定SVC的作用和初步装设地点。对2015年云南电网的外送断面暂态功率传输极限进行了仿真分析。仿真结果表明,云广直流单极闭锁为外送断面暂态稳定传输极限的约束故障;对云南电网SVC装设方案进行计算和分析,获得了对云南外送极限的能力提高的效果,并给出了理想配置地点。

The influence of SVC on the Yunnan power system is analyzed in transmission capacity.According to the time domain simulation based transmission capacity analysis and the power transmission path based voltage stability analysis,the effects and the primary installation points are deter-mined.A simulation analysis was carried out for the cross-section transient stability limit for power transfer from Yunnan electric powered in 2015.The simulation results show that Yunnan-Guangdong DC monopoles block is the main fault of the cross-section transient stability limit for power transfer from Yunnan.Computing and analysis are conducted on the SVC of installation scheme in the Yunnan power system,from which the improvements of limit of power transfer from Yunnan are increased and the optimal location of SVC are determined.