The Research Of Distributed Generation's Effect On Load Characteristics

In recent years, with growing development and application of distributed generation technology, the proportion of distributed generation in power system becomes an increasingly large. The application of distributed generation in large power grids has brought many benefits, such as enhancing power quality, improving peak load, helping to achieve the optimum distribution of resources, etc.. But, the access of distributed generation in power system produces a lot of impacts at the same time, and load modeling is one of them.Distribution generation usually access in the generation network, and when the capacity of distribution generation is small, synthesis load model can reflect the load characteristics. As the proportion of distribution generation is gradually increased, synthesis load model can not accurately reflect the load characteristics of this area when it is larger than a critical value. Then, the influence of distribution generation must be considered. Based on the research of asynchronous generator,equivalent method of synchronous generator external characteristic, load model which can comparatively accurate reflect the dynamic characteristics is established. Last, the efficiency of this new load model is testified by simulation calculation.