High-economic PV power compensation algorithm to mitigate voltage rise with minimal curtailment

Increasing photovoltaic (PV) penetration has caused overvoltage problem in distribution systems. Power curtailment that includes power absorption of PV inverter and charge of battery energy storage is usually used to improve the voltage profile. Most methods prefer to use an excessive local power curtailment to regulate voltage. This inevitably reduces PV generation economy. Hence, a coordinated power compensation algorithm (PCA) is proposed in this paper to regulate bus voltage, aimed at reducing the total power curtailment while serving requisite load demand. Selecting primary control nodes and optimal PV compensation orders based on sensitivity sequence, our PCA achieves an effective voltage regulation with the minimal power curtailment. Final results on a tested PV system model verify the effectiveness.

Automated summary

In this paper, a coordinated power compensation algorithm (PCA) is proposed to regulate bus voltage effectively with minimal power curtailment by selecting primary control nodes and optimal PV compensation orders based on sensitivity sequence. This method reduces the total power curtailment while serving requisite load demand, as verified by final results on a tested PV system model.