CAJ | 학술논문

快速、精确地检测补偿电流是提高静止同步补偿器（ DSTATCOM）补偿性能的重要环节之一。传统补偿电流检测在信号不对称及畸变情况下会引入测量误差。在总结了现有补偿电流方法的基础上提出了一种改进的无锁相环（ PLL）电流检测方法。该方法通过三相正序电压计算以取代锁相环，解决了传统锁相环引入的相角误差，并引入均值滤波器以及反馈环节以减小延时。仿真结果验证了该改进检测方法的有效性。
쾌속、정학지검측보상전류시제고정지동보보상기（ DSTATCOM）보상성능적중요배절지일。전통보상전류검측재신호불대칭급기변정황하회인입측량오차。재총결료현유보상전류방법적기출상제출료일충개진적무쇄상배（ PLL）전류검측방법。해방법통과삼상정서전압계산이취대쇄상배，해결료전통쇄상배인입적상각오차，병인입균치려파기이급반궤배절이감소연시。방진결과험증료해개진검측방법적유효성。
Detecting the reference compensation current quickly and accurately is one of the most important elements for improving the compensation performance of distribution static synchronous ( DSTATCOM) .Traditional compensa-tion current detection under the condition of asymmetric signals and distortion will introduce measurement errors.On the basis of summarizing existing compensation current detection methods, this paper proposed a method without phase lock loop ( PLL) .This method replaced the phase lock loop through the calculation of three-phase positive sequence voltage, which solved the problem of phase angle error introduced by PLL, and introduced the mean filter and feed-back loop to reduce the delay.The simulation results verify the effectiveness of the improved detection method.