摘要
对系统广域信号进行辨识设计广域电力系统稳定器(PSS)不仅能克服电网规模和数学模型阶数的限制,而且不受到元件模型和参数准确度以及运行方式的影响,便于开展多PSS的在线协调设计。文中提出基于多信号Prony算法在线辨识的广域PSS设计方法。该设计方法是通过对系统中各发电机组施加给定的激励信号,利用多信号Prony算法辨识出系统降阶模型及相应的留数矩阵;依据得到的留数矩阵计算各发电机组的综合可控性指标和综合可观性指标,选取控制机组和反馈信号;最后利用极点配置方法设计广域PSS参数。仿真示例和实时数字仿真器(RTDS)试验证实了所提出方法的可行性和有效性,对于多PSS的在线协调设计具有重要的工程意义。
Wide-area damping controller design based on the identification of test signals can eliminate the limitation of the grid scale and the mathematic model order,the accuracy of the element model and its parameters,and the effect of the operation condition. Utilization of the multi-signal Prony identification technique is presented to obtain residue matrices. The Prony indices of the mode observability and the mode controllability can be determined thereafter. The Prony indices are employed to optimize the controller location and the selection of the control feedback signals. The controller parameters are then designed according to the pole configuration method. Simulations on the 16-machine system and RTDS tests on the 4-machine system are performed to demonstrate the advantage of designed wide area power system stabilizer （PSS）.
出处
《电力系统自动化》
EI
CSCD
北大核心
2010年第8期14-19,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50595413)~~
关键词
电力系统稳定器
低频振荡
模式可观性
模式可控性
留数矩阵
power system stabilizer （PSS）
low frequency oscillation
mode observability
mode controllability
residue matrix
