基于STATCOM的自激异步发电机小干扰稳定控制  

Small Disturbance Stability Control of Self-excited Induction Generators Based on STATCOM

作　　者：王海峰[1] 吴新振[1] 卢子广[2] 李嘉[1] 马小然[1] 

机构地区：[1]青岛大学自动化与电气工程学院,山东省青岛市266071 [2]广西大学电气工程学院,广西壮族自治区南宁市530004

出　　处：《中国电机工程学报》2017年第14期4052-4059,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51377086;51677092)~~

摘　　要：自激异步发电机受到小干扰扰动后的端电压幅值降落给系统稳定性带来了巨大的影响,此影响在独立电力系统中表现更加突出,需施加有效的稳定控制。该文以静止同步补偿装置(static synchronous compensator,STATCOM)为研究对象,考虑其无功补偿原理,搭建基于STATCOM的自激异步发电机独立电力系统,在自然坐标系下,根据幅相动力学理论确立有功功率之差与电压相位差、无功功率之差与电压幅值差的关系,得出等效转子、等效弹簧模型,从直流电压与交流电流时间尺度对STATCOM装置的有功分量、无功分量进行控制。仿真和实验结果验证了在多时间尺度下对系统小干扰稳定控制的有效性和分析结果的正确性。The stability of self-excited induction generators is strongly influenced by small disturbance with load connection, especially in the isolated power system. It needs effective stability control. With principle analysis of reactive power compensation on static synchronous compensator （STATCOM）, this paper established a self-excited induction generator isolated power system with STATCOM. Under the nature reference frame, the relationships between error values of active power imbalance and voltage phase, reactive power imbalance and voltage magnitude were obtained based on the magnitude/phase dynamics theory. The models of the equivalent rotor and the equivalent spring were pointed out as well. The active and reactive components of the STATCOM were controlled by the DC voltage and AC current time scales, respectively. The analysis results of small disturbance system stability control in multi-time scales are verified to be accurate and effective by simulation and experimental results.

关 键 词：静止同步补偿装置 自激异步发电机 幅相动力学 时间尺度 小干扰 

分 类 号：TM315[电气工程—电机]