Research On The Optimization Of Grid Connected Wind Farm Capacity

With the development of world economy, the material life of human qualitysignificantly improved, the traditional energy continuous consumption and naturalresources have been earth destruction also bring the serious problem. Therefore, developand the development of new energy has become an inevitable requirement of thesustainable development.Wind is a clean, renewable energy, wind power has been used by more and morecountries. In recent years, China’s wind power installed capacity increased, but thetechnical level of wind power generation, especially the operation in the wind system,China and many countries in the world are still not a small gap, although the installedcapacity continues to increase, but the actual wind power grid in China in the "off grid"and "abandon wind" problem is increasingly obvious.In order to improve the running condition of wind power grid connected powersystem, improve the utilization of wind energy, the wind power system capacityoptimization problem is very necessary to do research. This paper first describes theresearch background and the domestic and foreign relevant research, introduces themethod of maximum access capacity of wind power system, then the wind field datacollection to carry on the research analysis, the wind farm is a typical probabilitydistribution fitting and fluctuations in the amount of use of MATLAB, the relatedconclusion the statistical characteristic of wind farm，then using dynamic simulationmethod in PSCAD/EMTDC platform, the maximum capacity of wind power accesssystem on an example system are studied, were selected for the simulation of an examplefrom a node and multiple node access wind conditions. Finally, introduced the basicthought of frequency constraint method, on the wind field from the capacity optimizationproblem of multi access point of the power system frequency constraint method based onmodeling analysis, and then use genetic algorithm to solve the model, compared with thecalculated results and the dynamic simulation of results derived, found closer to two,verified the maximum access capacity power system with multiple nodes connected towind farm is larger than a single node access wind farm.