The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positivesequence component of the supply voltage in real time.
这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。
2
Considering the imbalance of three phase voltages, a new arithmetic which verifies the generator paralleling based on the synthetic phasor of positivesequence fundamental voltage is proposed.
考虑到三相电压或多或少有些不平衡，提出了一种新的基于正序基波电压合成相量的发电机并网条件核算法。
3
The measured distance of the lump parameter circuit model can be converted to the correspondingly matching positivesequence measured impedance.