Reconfigure the Distribution Network With Photovoltaic Connection to Minimize Energy Loss Based on Average Branch Power and an Advanced Branch Exchange Algorithm

Abstract

The distribution network reconfiguration (DNR) minimize energy loss is one of the complicated problems and being studied substantially in recent years. Reconfiguration distribution network through the average branch power is a simple and effective method in obtaining fast optimization results even without using the load curve (for 24 hours). However, with high penetration of photovoltaic (PV) in the distribution network, the power flow on the branches at some survey time may change direction which leads to the average power on the branches might become zero when the energy loss is not minimal. Hence, determining accurately the average branch power in this case with PV participating grids is an important aspect in resolving problem of the distribution network reconfiguration with PV connection and minimizing energy loss. In order to solve this problem, an analytical technique based on load factor is presented in this paper for the purpose of determining accurately the average power on the branches via determining the amount of additional power on the branch when PV is installed in the power system. In addition, an advanced branch exchange method to quickly determine the configuration of the distribution network with PV while achieving the smallest energy loss is also proposed in the paper. The proposed method, which is tested on the IEEE 18 node and IEEE 33 node power system, shows the effectiveness of the proposed method in comparison with many other methods.

Keywords

• Distribution network
• reconfiguration
• energy loss
• average power
• load curve