摘要
介绍了电力系统中常见的低频振荡现象,指出了各种常用的信号分析方法在分析低频振荡时存在的的不足。探讨了Prony算法在实际应用中所需要解决的问题,进而立足于尽量减小噪声对Prony分析所造成的影响的原则,在算法的理论上和分析方式上提出各种改进措施来提高算法的精度。最后通过仿真数据和现场数据的分析验证了这些改进措施是有效可行的。充分说明改进后的Prony算法可以对现场的实际低频振荡波形进行准确分析,是一种准确而有效的分析方法。
In this paper,the common low frequency oscillation in power system is introduces. The deficiency in the analysis of low-frequency oscillation when using various signal analysis methods is pointed out. The problems which need to be solved in the applicatioin of the algorithm are discussed.Based on the principle of eliminating the noise impact on the prony algorithm,many progresses on the theory and analysis mode have been made to improve the accuracy of the algorithm.The simulation data and the practical data testified the efficiency of the algorithm.The proposed method is capable of giving accurate analysis of field waveforms generated in low frequency oscillation.
出处
《华中电力》
2008年第2期1-4,7,共5页
Central China Electric Power
基金
湖北省自然科学基金青年杰出人才项(CCR0044)
