CAJ | 학술논문

为了解决电力系统谐波检测中存在的检测精度低的问题，提出一种改进的全相位时移相位差频谱校正算法．消除了相位值对采样中心样点的依赖性。将该算法用于电网含有谐波以及问谐波的测量分析，结果表明该算法在中高信噪比情况下相位误差小于1°，具有估计精度高且稳定性好的特点。
위료해결전력계통해파검측중존재적검측정도저적문제，제출일충개진적전상위시이상위차빈보교정산법．소제료상위치대채양중심양점적의뢰성。장해산법용우전망함유해파이급문해파적측량분석，결과표명해산법재중고신조비정황하상위오차소우1°，구유고계정도고차은정성호적특점。
In order to solve the problem of low accuracy in the power system harmonic detection, an improved spectrum correction method of all phase time-shifting and phase difference is put forward, which can eliminate the dependence of the phase value on the sampling midpoint. Make measurement analysis of harmonics and inter-harmonics of power grid using this method, and the results show that in high SNR case, phase error can be less than l~. This method exhibits the characteristics of high estimation accuracy and good stability.