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.
Highlights
In the electrical system, the distribution network takes on the vital task of sending electricity to customers
It is essential to choose the metaheuristic or heuristic method to solve the distribution networks (DNR) problem depending on the problem's objective
The 33 node distribution network is tested to evaluate the proposed method's effectiveness compared with other method for the DNR problem when the distribution network has PVs connection
Summary
The distribution network takes on the vital task of sending electricity to customers. The distribution network has a closed-loop system configuration but operates radial systems and often operates at low voltages, so power losses are very huge. Reducing power loss is one of important problem in the operation distribution network. Various method have been used to reduce power losses in the distribution network, such as operating at higher voltage levels, installing compensation capacitors, installing distributed generation (DG), and reconfiguring distribution networks (DNR). The heuristic methods shows its effective for the DNR problem, it is difficult to implement in real-time for large systems. For this reason, Civanlar et al proposed a formula to reduce the complexity of heuristic method for the DNR problem [4]. It is essential to choose the metaheuristic or heuristic method to solve the DNR problem depending on the problem's objective
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