CAJ | 학술논문

为了准确定位电压暂降扰动和精确测量暂降幅值, 提出了一种将新型Teager能量算子(NTEO)和有效值算法结合进行暂降检测的新方法。通过引入分辨率参数i对Teager能量算子（TEO）进行改善, 得到抗噪性能更优越的NTEO算法, 利用NTEO算法定位电压暂降扰动起止时刻, 并采用有效值（RMS）方法对所定位的暂降进行幅值测量。仿真结果表明, 该算法与小波变换相比实时性更强, 并弥补了TEO抗噪性能较差和RMS方法不能准确定位扰动的不足, 能够快速、准确地检测到电压暂降。
위료준학정위전압잠강우동화정학측량잠강폭치, 제출료일충장신형Teager능량산자(NTEO)화유효치산법결합진행잠강검측적신방법。통과인입분변솔삼수i대Teager능량산자（TEO）진행개선, 득도항조성능경우월적NTEO산법, 이용NTEO산법정위전압잠강우동기지시각, 병채용유효치（RMS）방법대소정위적잠강진행폭치측량。방진결과표명, 해산법여소파변환상비실시성경강, 병미보료TEO항조성능교차화RMS방법불능준학정위우동적불족, 능구쾌속、준학지검측도전압잠강。
It is critical to estimate voltage sag parameters fast and exactly. The paper presented a novel detection method of voltage sag based on novel Teager energy operator (NTEO) and RMS algorithm for voltage sag detection and measurement accurately. It introduced a resolution parameter i to improve the performance of TEO, then obtained NTEO, which had better anti-noise performance. First, it used the NTEO algorithm to locate the starting and ending time of voltage dip disturbances, and then using the RMS algorithm to measure the amplitude of the positioned dips. The simulation experiment results indicate that, the proposed method has stronger real-time property than wavelet transform, and it overcomes the lack of the poor anti-noise performance of TEO method and the shortage of RMS that cannot accurately locate the disturbances. The algorithm can detect the voltage sag fast and accurately.