基于SSSC的DCIPC潮流控制及过电压改善
摘要
在研究了相间功率控制器(IPC)的基本原理的基础上,提出了一种新型的动态可控相间功率控制器(DCIPC)。此种DCIPC用静止同步串联补偿器(SSSC)来支路的移相功能,应用PI控制,可以快速、连续地改变电容和电感支路的移相角;由晶闸管控制电抗器(TCR)来完成IPC电感支路的电感器功能,通过控制晶闸管的触发延迟角,可以连续改变DCIPC电感支路的参数;由晶闸管控制串联电容器(TCSC)的容性微调模式来实现IPC电容支路的参数调节。DCIPC四个环节均能够快速、连续和灵活地进行控制。在联络线两侧电网相位滑移的情况下,调节DCIPC的参数可以协调联络线潮流,使得联络线有功保持基本恒定,并能够较好地改善传统IPC的过电压问题,使得端口电压满足要求。采用Matlab/Smulink仿真,验证了在两侧电网相位滑移时,基于SSSC的DCIPC可以完成联络线潮流控制,并改善过电压问题。
引文
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[3]Mohammad Amin Chitsazan,AM Trzynadlowski.Harmonic mitigation in interphase power controller using passive filter-based phase shifting transformer[J].Energy Conversion Congress&Exposition,2017:1-5.
[4]李娟,宋彬彬等.基于SSSC的改进型相间功率控制器[J].电力系统保护与控制,2013,41(15):68-74.
[5]M Farmad,S Farhangi,S A fsharnia,GB Gharehpetian.Modelling and simulation of voltage source converter-based interphase power controller as fault-current limiter and power flow controller[J].Generation Transmission&Distribution let,2011,5(11):1132-1140.
[6]李娟,刘修宽,曲祖义等.负荷频率变化时IPC及其两侧电网的动态行为[J].中国电机工程学报,2003,23(07):71-75.
[7]李娟,康娜娜,于学均.改进型IPC抑制过电压的研究[J].电力自动化设备,2008,28(10):49-52.
[9]C.Udhaya Shankar,Dr.Rani Thottungal,S.Mythili.Voltage stability improvement and power oscillation damping using Static Synchronous Series Compensator(SSSC)[J].IEEE International Conference on Intelligent Systems and Control(ISCO),2015:1-6.
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