几个同频率的正弦交流量在变化过程中，相对计时起点t=0而言先达到零值（或最大值）者称之为相位超前。相位超前的矫正可以用相位超前矫正装置，既可以改善系统的动态性能，也可以保证系统的稳态精度。
Islanding conditions and damages of PV grid-connected power system were analyzed;and then proposed basic principle and implementation procedure of phase lead anti-islanding detection method with inverter grid equivalent circuit according to islanding IEEE Std.2000-929 and UL1741.
分析了光伏并网发电系统的孤岛效应现象。 按照孤岛效应的国际通行标准,结合逆变器并网的等效电路给出了相位超前的反孤岛检测方法及其基本原理和实现过程。
参考来源 - 光伏并网系统孤岛检测与防止Islanding conditions and damages of PV grid-connected power system were analyzed;and then proposed basic principle and implementation procedure of phase lead anti-islanding detection method with inverter grid equivalent circuit according to islanding IEEE Std.2000-929 and UL1741.
分析了光伏并网发电系统的孤岛效应现象。 按照孤岛效应的国际通行标准,结合逆变器并网的等效电路给出了相位超前的反孤岛检测方法及其基本原理和实现过程。
参考来源 - 光伏并网系统孤岛检测与防止·2,447,543篇论文数据，部分数据来源于NoteExpress
提出采用载波相位超前技术消除其不利影响。
A carrier phase advance technique was developed to solve this problem.
这表明了三阶相位超前网络没有真正的优越性。
There appears to be no real advantage in going for a treble phase advance network.
最后，进行了预测项采用线性相位超前滤波器的预测PI控制器的设计。
Finally, the Predictive PI Controller designing with Linear Phase Advance Filter as predictor is introduced.
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