CAJ | 학술논문

为实现动态和暂态条件下同步相量的精确测量，提出基于一组线性相位有限冲激响应数字滤波的动态相量测量算法，系统阐述了算法的理论基础和设计方法。动态相量表示成一组基函数的加权和，由基函数优化选取和权重最小二乘估计实现测量滤波器的最优设计。通过将干扰分量加入优化目标产生陷波效果，实现对任意指定频率的谐波和间谐波，以及故障条件下衰减直流分量的有效抑制。测量滤波器的频响分析和相量测量的误差检验结果表明算法具有很高精度和良好适应性，特别适合于工程应用。
위실현동태화잠태조건하동보상량적정학측량，제출기우일조선성상위유한충격향응수자려파적동태상량측량산법，계통천술료산법적이론기출화설계방법。동태상량표시성일조기함수적가권화，유기함수우화선취화권중최소이승고계실현측량려파기적최우설계。통과장간우분량가입우화목표산생함파효과，실현대임의지정빈솔적해파화간해파，이급고장조건하쇠감직류분량적유효억제。측량려파기적빈향분석화상량측량적오차검험결과표명산법구유흔고정도화량호괄응성，특별괄합우공정응용。
In order to meet the accuracy requirements of synchrophasor measurement under dynamic and transient conditions, a dynamic phasor measurement algorithm was proposed based on a set of linear-phase finite impulse response (FIR) filters. The dynamic phasor was modeled as a weighted sum of a series of basis functions, and the optimization design of the FIR filters were performed by optimal selection of basis functions and least square (LS) estimation of the function weights. The specified harmonic, inter-harmonic, and decaying DC offset were restrained by using jamming into LS estimation so that there would exist notch-filter effect in the preassigned frequency bands of the designed filters. Frequency response analysis and measurement testing results show that the proposed synchrophasor estimator is effective, high-accuracy and very feasible for practical application.