摘要
随着直流输电配套工程的完善及电网安全稳定运行需要,直流输电系统孤岛运行方式成为良好的选择,配套无功补偿设备SVC与静止同步补偿器(static synchronous compensator,STATCOM)的选择成为亟待解决的问题。文中以哈密—郑州特高压直流输电系统为背景,仿真分析了哈—郑直流系统孤岛运行方式下分别采用SVC与STATCOM时,直流输电系统出现单极闭锁故障、双极闭锁故障、线路故障、直流配套机组跳闸及滤波器切除等工况时,直流孤岛系统的电压波动情况。仿真结果表明:SVC与STATCOM对直流输电系统孤岛方式故障后的电压恢复有积极作用;通过对比分析得出,在选择相同容量的前提下,SVC在孤岛运行方式下对过电压的抑制效果优于STATCOM。
With the improvement of the ultra-high voltage direct current transmission system and the need for the safe and stable operation of the power grid, the islanded operation mode of the UHVDC transmission system is a good selection, and the selection of FACTS equipment of SVC or STATCOM is a new problem to be solved. In this paper, taking the Zhengzhou Hami-Zhengzhou HVDC transmission system as the background, by applying SVC or STATCOM under the DC system islanded mode, the voltage fluctuations are simulated and analyzed, when faults oc- cur such as monopole blocking, bipolar blocking, and line faults, DC match power plants tripping, filter removal, etc. The simulation results show that SVC and Statcom have positive effects on voltage recovery after different fault of DC islanded transmission system, at the same time, under the premise of selecting the same capacity, the SVC is better than STATCOM in the islanded operation mode.
出处
《高压电器》
CAS
CSCD
北大核心
2017年第7期67-72,共6页
High Voltage Apparatus
基金
国家自然科学基金资助项目(51467019)~~
关键词
直流输电
孤岛运行
单极闭锁故障
配套机组
过电压
DC transmission
islanded operation
monopole blocking fault
supporting unit
overvohage
