电工电气
電工電氣
전공전기
ELECTROTECHNICS ELECTRIC
2013年
1期
14-16
,共3页
迭代傅里叶变换%交流电压%锁相%实时相位
迭代傅裏葉變換%交流電壓%鎖相%實時相位
질대부리협변환%교류전압%쇄상%실시상위
iterative Fourier transform%alternating voltage%phase-locked%real-time phase
针对电力系统中交流电压信号基波幅值与相位的检测,提出了一种迭代傅里叶变换计算交流基波电压幅值和相位的方法,该算法利用每次电压采样数据进行一次加减法计算即可获得准确的基波电压幅值和相位,通过仿真实验验证了该算法不仅较传统的锁相环技术能够获得更快的跟踪速度和更高的相角精度,而且还比基于离散傅里叶变换的锁相技术节省大量计算时间.
針對電力繫統中交流電壓信號基波幅值與相位的檢測,提齣瞭一種迭代傅裏葉變換計算交流基波電壓幅值和相位的方法,該算法利用每次電壓採樣數據進行一次加減法計算即可穫得準確的基波電壓幅值和相位,通過倣真實驗驗證瞭該算法不僅較傳統的鎖相環技術能夠穫得更快的跟蹤速度和更高的相角精度,而且還比基于離散傅裏葉變換的鎖相技術節省大量計算時間.
침대전력계통중교류전압신호기파폭치여상위적검측,제출료일충질대부리협변환계산교류기파전압폭치화상위적방법,해산법이용매차전압채양수거진행일차가감법계산즉가획득준학적기파전압폭치화상위,통과방진실험험증료해산법불부교전통적쇄상배기술능구획득경쾌적근종속도화경고적상각정도,이차환비기우리산부리협변환적쇄상기술절성대량계산시간.
Aiming at alternating voltage signal fundamental wave amplitude and phase testing, this paper raised a method based on iterative Fourier transform to calculate alternating voltage fundamental wave amplitude and phase testing. The algorithm carried out addition and subtraction once for each of voltage sampled data to obtain correct fundamental wave amplitude and phase. Simulated experiment verifies that compared with traditional phase-locked technology, the algorithm can not only obtain faster tracking speed and more exact phase angle, but also save much more computation time than district Fourier transform.