采用改进Prony算法的电力系统低频振荡分析  

Analysis of power system low-frequency oscillation using improved Prony algorithm

作　　者：宋杭选 刘智洋 问海亮 王莹莹 王孝余 高雁军 SONG Hangxuan;LIU Zhiyang;WEN Hailiang;WANG Yingying;WANG Xiaoyu;GAO Yanjun(State Grid Heilongjiang Electric Power Co.,Ltd.Electric Power Research Institute,Harbin 150030,China;State Grid Heilongjiang Electric Power Co.,Ltd.,Harbin 150090,China)

机构地区：[1]国网黑龙江省电力有限公司电力科学研究院,哈尔滨150030 [2]国网黑龙江省电力有限公司,哈尔滨150090

出　　处：《黑龙江电力》2023年第2期161-166,共6页Heilongjiang Electric Power

摘　　要：根据振荡特征提出一种可用于电力系统低频振荡分析的Prony算法,阐述了算法的数学模型和计算原理。通过与傅里叶算法进行比较,得出该方法在处理由指数项线性组合而成的信号问题上,无论是计算量还是计算精度都更优。针对传统Prony算法在噪声问题的处理上存在的缺陷,引入了改进的Prony算法,并利用仿真环境下的真实电网波形分析,说明改进后的Prony算法在处理电力系统低频振荡问题上的有效性。According to the oscillation characteristics,a Prony algorithm for the analysis of power system low frequency oscillation is proposed in this paper.The mathematical model and calculation principle of the algorithm are introduced.Compared with the Fourier algorithm,this method is better in dealing with the signal problem composed of linear combination of exponential terms,both in calculation amount and accuracy.Due to the defects of the traditional Prony algorithm in dealing with the noise problem,the improved Prony algorithm is introduced,and the real grid waveform analysis in the simulation environment is used to illustrate the effectiveness of the improved Prony algorithm in dealing with the low frequency oscillation of the power system.

关 键 词：低频振荡 系统阻尼 PRONY算法 算法优化 控制监测 

分 类 号：TM712[电气工程—电力系统及自动化]