摘要
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。
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 harmonies-insensitive grid voltage synchronization method. Complex finite impulse response filters are used to separate 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.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第9期2194-2201,共8页
Proceedings of the CSEE
关键词
电力谐波
有限冲激响应滤波器
卡尔曼滤波器
数字锁相环
power system harmonics
finite impulse response filter
Kalman filter
digital phase-locked loop
