摘要
FACTS装置若与储能系统相结合可扩大运行范围、提高性能、扩展功能、使输电更为柔性化。针对传统STATCOM只能单一的调节无功功率这一不足,提出一种结合蓄电池储能系统(Battery Energy Storage System,BESS)的STATCOM,可实现无功功率与有功功率的双重调节,即对系统的四象限补偿,同时直流侧电压基本恒定,无需控制。描述了STATCOM/BESS的工作原理,推导了数学模型。为实现无功功率和有功功率的独立调节,采用旋转坐标系下的电流解耦控制方法,并给出了PI参数的整定原则。仿真与实验结果证明了STATCOM/BESS采用该控制方法可获得良好的动稳态特性,具有理论价值和实际意义。
FACTS devices can expand operating range, improve performance, expand functionality, and make power transmission more flexible if it is combined with energy storage system. Due to the disadvantage of traditional STATCOM for only regulating reactive power, a STATCOM combined with battery energy storage system is proposed, which can achieve dual regulation of reactive power and active power or so called four-quadrant compensation to the system, meanwhile the DC voltage is almost constant, and need not to be controlled. The operating principle of STATCOM/BESS is described, and a mathematical model is derived. For the realization of independent regulation of reactive power and active power, the current decoupling control method based on rotating frame is adopted, and the setting principle of PI parameters is presented. Simulation and experimental results show that using this control method STATCOM/BESS can achieve good dynamic and steady-state characteristics, and have theoretical value and practical significance.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第6期43-48,共6页
Power System Protection and Control
关键词
静止同步补偿器
蓄电池储能
四象限补偿
电流解耦控制
STATCOM
battery energy storage
four-quadrant compensation
current decoupling control
