中国电机工程学报2017，Vol.37Issue(22)：6691-6699,9.DOI:10.13334/j.0258-8013.pcsee.162294
同步相量和频率测量最优滤波器设计
Optimal Filter Design for Synchrophasor and Frequency Measurement
汪芙平 1赵伟 1郭雷 2王春华 2姜旭 2王赞基1
作者信息
- 1. 电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京市海淀区100084
- 2. 国网吉林省电力有限公司,吉林省长春市130021
- 折叠
摘要
Abstract
Based on the study of synchrophasor measurement unit (PMU) measuring principles of finite impulse response (FIR) filter-bank,we theoretically derived the quantitative relations between synchrophasor and frequency measurement errors,i.e.TVE and FE due to fundamental off-nominal frequency,harmonics and wideband noise,with frequency responses of filter bank.By defining a group of specifications characterizing the filter bank,we built TVE and FE limits as functions of these specifications,and therefore propose optimization criteria for optimal filter design to achieve best overall measurement performance.In order to realize the optimization,we generalized DFT-based dynamic phasor measurement algorithm and derive its equivalent filter bank with free parameters.The DFT-based filters are designed by solving the optimization problems for optimal free parameters and the optimal results were given for synchrophasor measurement filters with 2-cycle,3-cycle and 4 cycle length,and frequency measurement filters with 4-cycle and 5-cycle length.Simulation results were presented for performance comparison between well-known 4-cycle TWLS algorithm and our optimization algorithm of the same length,which shows that the two algorithms have almost the same excellent performances in all aspects,except in harmonic rejection where our optimized algorithm achieve significantly superior performance.关键词
最优滤波器设计/相量测量单元/频率测量/离散傅里叶变换测量算法Key words
optimal filter design/synchrophasor measurement unit/frequency measurement/DFT based measurement algorithm分类
信息技术与安全科学引用本文复制引用
汪芙平,赵伟,郭雷,王春华,姜旭,王赞基..同步相量和频率测量最优滤波器设计[J].中国电机工程学报,2017,37(22):6691-6699,9.
