Voltage control strategy of high-penetration photovoltaic distribution network based on cluster division

Abstract

The penetration rate of renewable energy in distribution network is getting higher and higher, and the access of distributed photovoltaic brings challenges to the dispatching and control of power system. This paper mainly studies the voltage control problem of distributed photovoltaic distribution network with high permeability. First, select the appropriate cluster division index to improve the modular increment, and apply Fast Newman algorithm to divide the distribution network into several clusters. On the basis of the cluster, a voltage autonomy strategy within the population is proposed. Reactive power is optimally allocated according to the voltage amplitude and network loss, and an improved serpentine optimization algorithm is proposed to solve the problem. Finally, the IEEE 33 bus standard system is taken as an example to verify the effectiveness of clustering and voltage control strategies.