Coordinated Voltage Control Strategy of Active Distribution Networks with Consideration of Power to Hydrogen

The connection of high penetration of distributed renewable energy sources, e.g. photovoltaic (PV), will bring great challenges to the voltage control of active distribution network (ADN). To better solve the problem of voltage violation caused by massive connection of PV, this paper explores the voltage regulation potential of power to hydrogen (P2H) devices and proposes a coordinated voltage control strategy of ADN with P2H. Firstly, the models of PV, on-load tap changer (OLTC), capacitor bank (CB), energy storage systems (ESS) and other traditional equipment in ADN are established. Secondly, P2H is modeled with consideration of start-stop constraints, output constraints, power constraints, etc. Finally, a voltage coordination control strategy of ADN with P2H is proposed considering both the voltage control effect and regulation cost. The proposed strategy is tested on the improved IEEE33 distribution network, and the simulation results verify its effectiveness in reducing voltage deviation and regulating cost.