SVG补偿后衰减振荡至稳态的判别方法研究  

Research on Discrimination Methods of Attenuated Oscillations to Steady State after SVG Compensation

作　　者：曹展 张春宁 陈瑶琪 徐野驰 阮文杰 CAO Zhan;ZHANG Chunning;CHEN Yaoqi;XU Yechi;RUAN Wenjie(State Grid Jiangsu Electric Power Engineering Consulting Co.,Ltd.,Nanjing 210024,China;Jiangsu Xingli Construction Group Co.,Ltd.,Nanjing 211100,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China)

机构地区：[1]国网江苏省电力工程咨询有限公司,江苏南京210024 [2]江苏兴力建设集团有限公司,江苏南京211100 [3]河海大学能源与电气学院,江苏南京211100

出　　处：《电工技术》2020年第14期73-75,共3页Electric Engineering

摘　　要：文章对SVG补偿后系统无功实测数据给出相应的衰减至稳态的判据并计算出其稳态点的参考值,用标准差、自相关系数、FFT、Prony四种方法提取两组振荡衰减数据的特征参数,并分别计算其何时到达稳态点。对这四种方法进行比较发现FFT判别法和自相关系数判别法分别在处理速度和准确性上具有优势。In this paper, the criterion of attenuation to steady state was given and the reference value of steady-state point was calculated for the measured data of reactive power after SVG compensation. Four characteristic methods of standard deviation, autocorrelation coefficient, FFT and Prony were used to extract the characteristic parameters of the two sets of oscillation attenuation data, and when they reach the steady state point respectively were calculated. Comparing these four methods, it was found that the FFT discrimination method and the autocorrelation coefficient discrimination method had advantages in processing speed and accuracy, respectively.

关 键 词：衰减振荡判别 自相关系数 FFT PRONY 特征参数提取 

分 类 号：TM53[电气工程—电器]