Coordinated Voltage Control Based on Projected Gradient Descent Algorithm for PV-Rich Distribution Network
- Resource Type
- Conference
- Authors
- Zhang, Xiren; Li, Yong; Wang, Can; Peng, Yanjian; Liu, Jiayan; Chang, Fanrui
- Source
- 2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Electrical and Energy Conference (CIEEC), 2023 IEEE 6th International. :1334-1339 May, 2023
- Subject
- Engineered Materials, Dielectrics and Plasmas
Power, Energy and Industry Applications
Reactive power
Simulation
Systems operation
Distribution networks
Sensors
Security
Quadratic programming
Distribution network
photovoltaic
distributed voltage control
projected gradient descent algorithm
- Language
Large-scale distributed photovoltaic (PV) access to the distribution network has adverse effects on system operation and voltage control. This paper proposes a distributed voltage control strategy based on the projected gradient descent algorithm. The optimal voltage control problem is formulated as an optimization program, with the goal of maintaining the voltage profile of node with PV across the network. The voltage control problem is reduced to a quadratic programming constrained optimization problem. By minimizing the voltage deviation, the reactive power injection problem of PV inverters is solved by the projected gradient descent algorithm. The proposed method only collects neighbor information of PV to communicate with each other without global communication. Finally, the simulation results show that the proposed method can effectively maintain the voltage to the security operating range.