Optimal Operation of Regional Virtual Power Plant Based on Network Loss and Voltage Regulation

The access of distributed generation increases the possibility of node voltage crossing limit of distribution network. The change of node active and reactive load will cause the change of node voltage, and also have an impact on system network loss. Based on this, this paper uses virtual power plant (VPP) to aggregate adjustable resources under nodes in the distribution network region, and constructs a regional VPP optimization operation model with the objectives of reducing system network loss and improving voltage level. Finally, the proposed model is validated by improved IEEE 33-bus distribution network under two scenarios of regional autonomy and upper given output plan, and the results show that the VPP helps to improve the voltage level of distribution network and reduce the system network loss.