CAJ | 학술논문

电网电压存在谐波且发生诸如对称和不对称等故障时，由于常规的电压基波提取方法速度较慢，可能会影响到电力电子设备的安全运行。针对上述问题，该文提出一种快速且谐波不敏感的方法，利用复有限冲激响应滤波器组将主要谐波与基波分离，并利用自适应卡尔曼滤波器获得基波分量。仿真和实验证明所提出的方法在快速性、准确性、灵活性、稳定性等方面都有较突出的表现。
전망전압존재해파차발생제여대칭화불대칭등고장시，유우상규적전압기파제취방법속도교만，가능회영향도전력전자설비적안전운행。침대상술문제，해문제출일충쾌속차해파불민감적방법，이용복유한충격향응려파기조장주요해파여기파분리，병이용자괄응잡이만려파기획득기파분량。방진화실험증명소제출적방법재쾌속성、준학성、령활성、은정성등방면도유교돌출적표현。
ABSTRACT:For the grid fault under distorted voltage conditions such as symmetrical and unsymmetrical voltage dips, the normal grid voltage synchronization speed is slow. And the longer the transition detection time is, the more dangerous power electronic equipment operation is.For the synchronization of power grid voltage under distorted voltage conditions, this paper proposes a fast and harmonics-insensitive grid voltage synchronization method. Complex finite impulse response filters are used toseparate the fundamental components and main harmonic components. Two adaptive Kalman filters are used to obtain the fundamental components. The simulation and experimental results show that the method mentioned in this paper has the advantages on the rapidity, accuracy, flexibility, stability and so on.