摘要
电压反馈控制是STATCOM(静止同步补偿器 )控制器中必不可少的核心环节之一。论文从理论分析、数字仿真、动模实验 3个方面对影响STATCOM电压控制器性能的因素进行了分析。这些因素包括STATCOM安装点的短路阻抗、系统阻抗的动态特性、STATCOM运行点、脉冲发生器的同步锁相技术和系统负荷等。还分析了STATCOM电流控制的稳定问题。并指出动态增益是决定控制器稳定性的关键参数 ,给出了工程实用中提高控制器稳定性的方法。
This paper analyzes the voltage control stability of STATCOM(Static Synchronous Compensator). Maximum response rate of STATCOM is always expected to meet the power system performance requirements, but its control loop might become unstable under certain circumstances. The factors influencing the stability margin of the STATCOM voltage control loop are described in details in this paper, these factors include the strength of the power system viewed from STATCOM, the inherent resonance of power network, the operation point of STATCOM, the phase lock loop and the load. This paper also provides phase compensation method to enhance the stability of STATCOM voltage regulating loop. Theoretical analysis in frequency domain, digital simulation and real experimental investigation are all performed in this paper to give convincing conclusion.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2000年第8期46-50,共5页
Proceedings of the CSEE
