基于相量法的短数据窗快速滤波算法  

A FAST FILTER ALGORITHM OF SHORT DATA WINDOW BASED ON PHASOR ANALYSIS

作　　者：袁宇波[1] 陆于平[1] 刘中平[1] 

机构地区：[1]东南大学电气工程系,江苏省南京市210096

出　　处：《电力系统自动化》2004年第3期58-63,共6页Automation of Electric Power Systems

摘　　要：超高压大机组电力系统要求数字保护动作可靠、快速,一般的全波傅里叶算法由于固有的数据窗延时难以满足要求。文中通过对故障信号采样值相量的物理概念分析,提出了基于解矩阵方程的短数据窗正交滤波器组的统一设计理论,该方法可按要求滤除任意整次或非整次谐波,并能保证余弦和正弦滤波器幅频特性一致,可作为自适应变数据窗保护中的基本算法;同时初步分析了滤波器幅频特性与数据窗暂态性能之间的关系,提出了考虑数据窗暂态性能的一般设计原则,仿真结果验证了所提方法的正确性和可行性。The EHV and large-scale generator power system requires protection device reliable and fast operation, whereas full-wave Fourier algorithm is hard to meet this requirement for a built-in data window delay time. A short data window orthogonal filter design method is presented by solving linear matrix equation after analyzing the physical concept of sampling value phasor in fault signal. It can filter out integral or sub-harmonic and guarantee cosine and sine filters to possess the same amplitude versus frequency response characteristics. It can be unit filter of the adaptive data window algorithm protection. At last the design principle is put forward after analyzing the relationship between frequency property and data window transient responding performance.

关 键 词：数字滤波 相量分析 短数据窗 数据窗暂态 电力系统 

分 类 号：TM713[电气工程—电力系统及自动化]