Analysis Of Distribution Network Loss With Distributed Generation

Distributed generation technology as an important complement of traditional large power supply system today, it has become a more cutting-edge research in the field of power system at home and abroad. With the awareness of energy loss reduction becoming more strongly, distributed generation as an effective way of generating electricity to solve the problem of energy needs has been improved power system reliability and reduced the network line losses, Therefore, it has important theoretical and practical significance to research the line losses and the optimal placement of distribution network with distributed generation.Firstly, this paper describes the background, significance and the characteristics of distributed generation, especially the significance of in terms of loss reduction. Then it outlines a variety of classical theoretical line loss calculation methods. It analyses the status and the prospect of the field of distributed power at home and abroad.Secondly, this paper analyses various types of distributed generation, including: wind power, fuel cells, photovoltaic power generation and micro-gas turbine power generation. On this basis, according to different characteristics of distributed generation, it has established the corresponding mathematical models. Also, according to three commonly used interface types, it establishes its corresponding mathematical model of connecting network strategy. In addition, it analyses and discusses a variety of effects on voltage, net loss, power quality and relay protection after the distributed generation introduced to distribution network.Again, all discussed in detail the classical theory of line loss calculation method, described in this paper which focuses on the forward and backward substitution using power flow calculation method, and then it simulates and analyses the affecting laws on line losses from the two aspects of both the installed location and injection capacity of distributed power.Finally, according to the effect of different installation location and injection capacity on distribution network line losses, this paper makes it the optimization goal that the line losses is minimum, respectively, it derives the relationship of the distributed power installed location and injection capacity from the continuous load distribution model and discrete load distribution model and verified by simulation. providing a simple method for the practical application of engineering...