【摘要】 提出一种可实时检测次同步谐振SSR(sub-synchronous resonance)的方法。基于电气量测量的思想,采样瞬时电流作为检测量。首先对采样电流信号进行滤噪处理,接着利用Prony算法进行分析,辨识出次同步分量的幅值,观察其在连续时间段上的变化规律,进而判定次同步谐振发生与否。此外介绍了Prony算法具体的实现步骤、噪声的处理方法以及Prony算法用于次同步谐振检测的性能优势。最后在IEEE第一标准测试系统模型上进行仿真,试验结果证明了基于Prony算法的次同步谐振检测方法的有效性。更多还原

【Abstract】 A new method based on Prony algorithm for detection of sub-synchronous resonance(SSR) is proposed.Based on the electrical measurement,the current which is most likely to get is selected as the sub-synchronous resonance detected amount.First,the noise of the sampled current signal is filtered,and then the amplitude of the signal in resonant frequency is identified and analyzed by using Prony algorithm.After that,whether sub-synchronous resonance occurs or not is determined by observing the changes of the amplitude in a continuous time period.In addition,the specific steps of Prony algorithm for implementing,treatment of noise and Prony algorithm’s performance advantages for detection of SSR are given.Finally,the simulation is done on IEEE first benchmark system model for sub-synchronous resonance,and the results illustrate the effectiveness of the presented approach.更多还原