Simulation Analysis of Charging and Discharging Behavior Characteristics of Electric Heavy-Duty Truck Charging Stations Connected to the Distribution Network in the Substation Area

The charging and discharging behavior of electric heavy-duty trucks causes fluctuations in node voltage and branch active power, making it difficult to suppress harmonics. In order to reduce the total harmonic distortion rate, accurately simulate the charging and discharging process, and equivalently analyze the characteristics of charging and discharging behavior, a simulation analysis method for the characteristics of charging and discharging behavior of electric heavy-duty truck charging stations connected to the distribution network in the substation area is proposed. By suppressing harmonics, extract the charging and discharging characteristics of electric heavy-duty truck charging stations connected to the distribution network in the substation area, simulate the charging and discharging behavior characteristics of electric heavy-duty truck charging stations connected to the distribution network in the substation area, and control the fluctuation situation. The experimental results show that the error between the current change value obtained by the proposed method during the charging and discharging process and the actual current change value during the charging and discharging process is less than 50A, and the simulation analysis error of voltage fluctuation is less than 2V, indicating a relatively accurate simulation analysis result of the current fluctuation law.