电力系统自动化2017，Vol.41Issue(20)：92-96,5.DOI:10.7500/AEPS20170424003
动态条件下同步相量测量装置的数字滤波器及计算优化
Digital Filter and Computational Optimization of Synchronized Phasor Measurement Unit Under Dynamic Conditions
常乃超 1刘思旭 2余高旺 3张艳超 3马小燕3
作者信息
- 1. 国家电力调度控制中心,北京市100031
- 2. 国网重庆市电力公司,重庆市400014
- 3. 许继电气股份有限公司,河南省许昌市461000
- 折叠
摘要
Abstract
With the increasingly stringent requirement of wide area measurement system for the dynamic performance of synchronous phasor measuring unit,the application of digital filter in the device tends to become complicated.In order to improve the accuracy,multiple filters often have to cooperate with each other to complete the calculation.This paper gives a detailed filter design of synchronous phasor measuring unit for intelligent substation.Finite impulse response (FIR) filter cascade discrete Fourier transform (DFT) will bring about a very large amount of computation pressure on the embedded device.This paper deduces the formula of filter coefficients after FIR cascade DFT.These coefficients calculated by offline formula can significantly reduce the calculation workload and solve the computation problem caused by the filter cascade.Theoretical analysis and practical test show that measuring accuracy is up to requirement of the relevant standards after adopting the above scheme.关键词
同步相量/动态/数字滤波器/有限脉冲响应/离散傅里叶变换Key words
synchronized phasor/dynamic state/digital filter/finite impulse response (FIR)/discrete Fourier transform (DFT)引用本文复制引用
常乃超,刘思旭,余高旺,张艳超,马小燕..动态条件下同步相量测量装置的数字滤波器及计算优化[J].电力系统自动化,2017,41(20):92-96,5.
