摘要
随着电网互联规模的不断扩大,区域间的低频振荡成为威胁电力系统稳定运行的关键因素之一,而基于全球定位系统(GPS)的广域测量系统(WAMS)的发展和应用为在线辨识区间低频振荡模式成为可能。因而,研究区间低频振荡在线辨识算法已成为广域阻尼控制的理论依据。提出了一种改进的prony算法来在线辨识低频振荡模式,8机36节点仿真算例表明,该算法能够实现在线低频振荡模式辨识,根据辨识的结果配置PSS参数能够有效地抑制低频振荡。
With the continuous expanding of power grid interconnection, the inner-area lower frequency oscillation has become one of the crucial factors which threaten the stability of power system, the development and application of wide-area measurement system （WAMS）based on the global positioning system（GPS） make it possible to on-line identify the inner-area lower frequency oscillation mode. Therefore, the research on the on-line identification arithmetic for the inner-area lower frequency oscillation has become the theoretical basis of wide-area damping control. An improved Prony method is proposed in the thesis to online identify the inner-area lower frequency oscillation mode. The simulation example of 8-generator 36-bus system proves that this algorithm can identify the inner-area lower frequency oscillation mode online and control lower frequency oscillation availably by configuring the parameter of the PSS based on the result of the identifying information.
出处
《陕西电力》
2008年第2期11-15,共5页
Shanxi Electric Power
关键词
低频振荡
WAMS
PRONY算法
GPS
low frequency oscillation
wide-area measurement system （WAMS）
Pony method
global positioning system （GPS）
