Power Flow Calculation Of Distribution Network With Distributed Power Supply

At present,with the rapid development of the national economy,the pace of China's power grid construction is accelerating and the power grid scale is constantly expanding.The drawbacks of centralized large power grids have become increasingly prominent.At the same time,distributed generation technology is developing rapidly.Distributed generation has little pollution,high reliability and high utilization rate of new energy characteristics.At the same time,the distributed power supply position is flexible and decentralized,which is well adapted to decentralized power demand and resource distribution.Its mutual backup with the large power grid also improves the power supply reliability.It will be the new direction for the development of China's power grid.However,the distributed generation and power network operation,single-phase trend of traditional distributed system has been unable to meet the system requirements,special requirements need to change the power flow calculation algorithm to meet the two way flow,the distribute power to minimize the negative impact on the power system.Therefore,it is a prerequisite to study the power flow distribution network with distributed generation,which is to ensure the safe and stable operation of distribution network and power generation equipment.This thesis focuses on the power flow calculation of distribution networks with distributed generation algorithm research and optimization,working principle,the study of the traditional power flow calculation method and the typical characteristics of distributed power grid and power flow calculation model,then the improved algorithm based on traditional forward and backward substitution algorithm,the corresponding mathematical model is established through the analysis of distributed power supply work principle and operation mode,the simulation results show that the algorithm principle is relatively simple,fast convergence,less iteration and memory saving,high practicability.The specific line in Baiyin region of Gansu Province as the object of distribution network,having a plurality of static characteristics of different node voltage distribution network,including a plurality of nodes are examples of power flow calculation,in this paper the development trend of program accuracy and high practicability.