Reduce Phase Unbalance with Cross-phase of PV and EV Chargers, using Convex Optimization on Quadratic Constraint in Distribution Network

Abstract

In the near future, Photovoltaic (PV) network and Electric Vehicle Charging station (EVC) will be deployed in Ho Chi Minh City (HCMC), the use of Cross-phase characteristic will help to reduce the influence of these distributed sources and will improve the imbalance. phase of the current low voltage distribution network. The optimization aims to reduce the loss caused by phase unbalance. Convex optimization model is considered to solve the optimization problem with quadratic constraint and voltage balance equation system (VUF) and phase constraints. Algorithms run according to the above model including OPF, Cross-phase and using unbalanced 3-phase IEEE 33 bus and IEEE 192 bus systems. The results show that using the Cross-phase characteristic significantly reduces phase imbalance.