摘要
分析了级联H桥变流器拓扑下STATCOM的LCL滤波数学模型,研究LCL滤波参数对STATCOM系统的稳定性、滤波特性、补偿效果和阻尼损耗的影响,提出一种链式STATCOM输出LCL滤波器电感比线性优化的新方法。在降低系统阻尼损耗的同时,对LCL参数进行优化设计和选择,使得STATCOM系统输出特性满足设计要求。最后,通过搭建电压10 kV、容量6 Mvar链式STATCOM的试验样机,验证了该方法的可行性和优越性。
This paper analyzes the LCL filter mathematical model of STATCOM under the topology of cascaded H-bridge inverter. The impacts of LCL filter parameters on the stability of STATCOM, filter characteristics, compensation effect and power losses of damping resistor are studied. A new method of linear optimization about induction ratio is proposed. While reducing power losses of damping resistor, LCL parameters are precisely designed to make STATCOM system output characteristics meet the design requirements. Finally, through building cascaded STATCOM （10 kV, 6 MVar） experimental prototype, the feasibility and advantage of this method are confirmed.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第22期25-31,共7页
Power System Protection and Control
基金
高等学校博士学科点专项科研基金(20110095110014)
