Optimal Allocation of Soft Open Points on Distribution Power Grid with High Penetration of Renewable Energy to Reduce Energy Loss for One day

In the power system (PS), power loss (PL) accounts for 13 % of the total power generation. So, reducing PL is a crucial matter that many researchers and power companies are interested in. This study focuses on optimizing the placement and size of soft open points (SOPs) in the IEEE 33-node distribution network (DN) to minimize power and energy losses with three cases: Case 1) Optimal allocation of SOPs in the original DN; Case 2) Optimal allocation of SOPs in the DN with high penetration levels of one wind turbine generator (WT), and two photovoltaic generators (PVs); Case 3) Inherits the results from Case 2 and optimizes the operation of SOPs over one day when load demand (LD), WT, and two PVs changed by the time. The research proposes the Equilibrium Optimizer (EO), which has been proven to be more effective than the War Strategy Optimization Algorithm (WSOA) in determining the optimal size and location of SOPs to reduce power loss. In Case 1 and Case 2, the active power loss was 210.9983 kW before installing SOPs. After placing SOPs, the power loss decreased below this value. Especially with optimal operation of the SOPs device throughout one day in Case 3, System 2 has significantly decreased energy losses compared to the Original system (OS) and System 1. Therefore, using SOPs can reduce power and energy losses in the distribution grid.