The Power System Optimization Research On Safety And Energy Saving Of Datong Coal Mine

Datong Mining Grid is a typical example of the Enterprise Grid，which is a kind ofspecial distribution grid in China. It is almost as large as the normal urban and ruraldistribution network. Enterprise Grid usually is took charge by power administrationsection. With the development of coal, the contradiction between the deficiency of theinvestment and high demand of the reliability， safety and quality of the power supply isbecoming more outstanding.Based on the literature and the investigation，and under the background of theEnterprise Grid, this paper summarizes the characteristic, status and problems of DatongMining Grid. By using the PSASP which studied by the power of scientific researchinstitute as the tool，the power flow is calculated by Newton method; under the typicalload curve、capacitance input and transformers tap changing condition in the practicaloperation of Datong power grid, loss is analyzed and reactive power is optimized;Datong Mining Grid is analyzed based on Immune Genetic Algorithm, then theprioritization scheme is raised.The optimization scheme given by this paper has been proved to be feasible，and hasbegun to be implemented in practice. It can give some practical advices for DatongMining Grid in some degree and can be used for reference to other great enterprise grid.