基于Prony辨识的STATCOM附加次同步阻尼控制器设计  

STATCOM Additional Subsynchronous Damping Controller Design Based on Prony Identification

作　　者：史华勃[1] 傅闯 刘天琪[1] 李兴源[1] 王渝红[1] 魏巍[1] 

机构地区：[1]四川大学电气信息学院,成都610065 [2]南方电网科学研究院,广州510623

出　　处：《华东电力》2011年第9期1456-1461,共6页East China Electric Power

基　　金：国家自然科学基金项目(51037003);十一五国家科技支撑计划(2009BAA23B02)~~

摘　　要：静止同步补偿器(STATCOM)具有强大的无功支撑和电压控制能力,利用其附加阻尼控制可以在稳定接入点电压的同时可抑制其接入引起的振荡以及系统中出现的次同步谐振(SSR)。通过对系统时域仿真数据的Prony辨识,得到STATCOM定电压控制系统参考电压到发电机转速偏差的等效传递函数;辨识出系统的振荡模态及其特征信息。在此基础上,采用状态反馈的极点配置技术设计了STATCOM附加次同步阻尼控制器(SSDC)。在IEEE次同步谐振第一标准测试系统上,利用PSCAD/EMTDC进行仿真实验,验证了Prony辨识方法用于STATCOM阻尼控制器设计的可行性和所设计的阻尼控制器的有效性。Static Synchronous Compensator（STATCOM） has strong ability to control reactive power and voltage.It can keep access point voltage stable,as well as inhibit oscillation caused by its access into the system and the Subsynchronous Resonance（SSR） in the power system by its additional damping control.Prony identification method was adopted to obtain the effective open-loop transfer function between STATCOM reference voltage and the generator′s speed deviation through the time-domain system simulation data,and the oscillation modal and feature information were identified as well.Additionally,a STATCOM SSDC was designed by means of state feedback pole placement technique.Simulation tests based on PSCAD/EMTDC were made for IEEE SSR first benchmark model.The results verify that the method proposed for designing STATCOM damping controller is feasible and effective.

关 键 词：PRONY辨识 静止同步补偿器(STATCOM) 次同步谐振(SSR) 附加阻尼控制器(SSDC) 

分 类 号：TM761[电气工程—电力系统及自动化]