Abstract :
The coal mine power supply network in operation, how to give full play to its economic and social benefits, depends entirely on the security of power system, power quality and supply capacity. Therefore, the optimization of the coal mine power network has been a hot topic of great concern to people. Although this topic has done a lot of research, and practice in some coal mines, but so far there are still many problems in practical, the most critical problem can be classified into two: the power supply network, multi series loss, the low voltage quality, operation is sub-economic. A new method to new idea to solve these two problems, the utility model is characterized in that: according to the shortest path problem in graph theory, put forward the least series theory, the shortest pat hand minimum series combination, to study the optimal number, according to the principle of "hierarchical compensation, on-site balance" to research the reactive power optimization of coal mine power supply system. The crack of these two problems will rely the network optimization and reactive power optimization on the base of scientificity, advancement and practicability basically. Therefore, this study not only make use of the limited resource of coal mine effectively and fully under the premise of protecting the environment, which is of great practical significance to promote the social and economic rapid, sustained and healthy development of the electric power, and will enrich the scientific content and has established academic value to enhance the science level.
