Optimal allocation of SPD in low voltage distribution system based on particle swarm optimization

With the application of modern communication, control and measurement technology based on microelectronics and computer, a large number of microelectronic devices have been applied in the power generation, transmission and production links of power plants. In order to ensure the safe operation of all kinds of electronic equipment, it is necessary to install surge protector (SPD). In this paper, MATLAB simulation software is used to analyze and calculate the fault rate of the weak current equipment when the lightning wave invading the system. A method of SPD optimal allocation based on particle swarm optimization (PSO) is proposed for the low-voltage distribution system of power plant. This method takes into account the voltage protection level and the electrical distance, and achieves the optimal allocation of SPD under the premise of meeting the shock and withstand voltage requirements of the equipment under protection. It will bring certain economic benefits and is of great significance for practical engineering applications.