Research For The Effect And Solutions Of Distributed Generation On Distribution Systems

Energy is the foundation for human survival and development, irrational energy structure as well as the long-term sustained low energy efficiency brings many environmental and social problems. Improving energy efficiency and improve energy structure is the inevitable solution to conflicts between rapid growth in energy demand and energy shortages, energy use and environmental protection. More and more people pay attention to Distributed Generation Based on the new energy development and utilization, its development potential is immeasurable. In addition to green energy, efficiency, flexibility and other advantages, there is a series of images when Distributed Generation access to distribution network, for example operation mode, the voltage, distribution network loss, harmonics and reliability impact and so on.Firstly, the article is classify distributed generation according to its distributed generation characteristics. Analysis the influence of distributed power capacity, location and operation mode to voltage distribution on of distribution network, using a comprehensive analysis of power system simulation program PS ASP calculation, studying the influence of nodes voltage distribution when a single and many distributed generation access to distribution network. On this basis, summarizes the effect law distributed generation on the grid voltage distribution and proposed to proposals and measures ensure voltage is not more limited.Secondly, the article builds the distribution network distribution model considering the access of distribution generation, as a basis, it analysis of distributed distribution access locations, capacity, operation mode three factors on the impact of distribution network losses and proposed to proposals and measures to lower the distribution grid network loss.Finally, according to distributed power intermittently and Randomness characteristics, the paper proposes a new assessment model considering the DG, which can handle the influence of DG to the distribution system. It uses the depth-first search and breadth-first search technology to solve the problem. Besides, the paper makes a new version of the minimal path method in the traditional assessment analysis to suit for the algorithm considering the DG.