摘要
静止同步补偿器(STATCOM)的主要功能是支撑节点电压,同时直流侧电容电压稳定也是STATCOM装置安全运行的保证。介绍了STATCOM装置的数学模型和运行原理,提出了一种新的控制策略。采用电流前馈环节加比例积分(PI)调节系统控制直流电容电压,节点电压控制采用PI调节和一定的下垂比例因子组成的自动电压调整控制策略。详细探讨了控制系统的设计方法和过程。仿真以及7.5kV.A物理模型的实验结果表明,能够快速有效地将节点电压控制在允许的范围内波动,直流电容电压得到有效控制,证明了控制系统的正确性和控制器设计的有效性。
STATCOM（STATic synchronous COMpensator） is mainly to support busbar voltage and maintain the stability of DC-link capacitor voltage. The operational principle and mathematical model of STATCOM are introduced. A novel control strategy is proposed,which uses current feed-forward loop and PI（Proportional-Integral） loop in regulation system to control the DC capacitor voltage while the automatic busbar voltage control is composed of PI and scaling factors of droop characteristic. The control system design is discussed. The simulation and experiment on a 7.5 kV .A system indicate that the DC capacitor voltage and busbar voltage can be controlled efficiently,which proves the correct control system and the effective controller design.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第10期62-66,共5页
Electric Power Automation Equipment
关键词
静止同步补偿器
双环控制
电流前馈控制
下垂特性
static synchronous compensator
double-loop control
current feed-forward
droop characteristic
