The demand coefficient method is usually used to calculate the total power load of a port.The installed capacity of handling equipment is relatively large in the total installed capacity of the port,and the selection of handling equipment demand coefficient will directly affect the total power load value of the port.However,the value of the demand coefficient mostly depends on experience,and there is no clear evaluation standard.To improve the method of load calculation,this paper proposes a load calculation method based on real-time simulation using PSCAD power system simulation software,it can simulate the real-time load curves of port equipment according to the technical parameters of handling equipment,and then accurately calculates the total power load of port equipment.The simulation results show that this method can further improve the accuracy of load calculation.