Research On The Scheme Of The Wind Farm Access System In Da Qing Region

Because of modern industry for large consumption of non renewable energy,the energy crisis becomes a threat to the industrial development of the world. In order to ensure the sustainable development, the development of new energy has become the world within the scope of common problem.However,wind power has brought benefits to power grid at the same time, also has a greater impact on the safe and reliable operation of power grid.The wind power generation as a new energy and renewable energy in the economy because of the advantages of environmental protection has become a mainstream recent development at home and abroad,With the continued growth of wind power installed capacity, as well as the continual emergence of large-capacity wind farm,the impact of wind power on power grid will not be ignored. Analyzing the performance characteristics of wind power and studying wind power acceptance ability of power grid has great significance to ensure the grid-connected wind turbine safe and reliable operation.Therefore,this paper takes a certain wind farm as the research object in Daqing region.First of all, combining with development level of wind power at home and abroad and actual situation in the daqing regionthe,this paper expounds the background and significance of wind power research.Through reading a lot of references summarizes wind turbine model, wind power generation and the impact of wind power on the power system. By analyzing the weak link of Daqing power grid and the planning of power grid,the necessity of the research and analysis of the wind farm access system in Daqing power grid is introduced.Secondly,through analysis of the economic situation and load characteristics and the growth trend in recent years in Daqing area, load forecasting of Daqing power grid is carried out by using the linear regression analysis method in the power.By using the method of maximum likelihood estimation and mean value method, the simulation curves of regression coefficients in two different ways are analyzed and compared.utilizing the maximum load value predicted by the front and the maximum load utilization hours method predicts the 13 th Five-Year total electricity consumption; The data preparation work is done for the calculation of power consumption balance.Then,combined with the current status and future development planning of Daqing power grid and considering the constraint conditions such as reserve capacity and plant power consumption,the power balance calculation is carried out according to the different conditions of wind power output in three different ways.Through the comparative analysis of the results of power consumption balance, the Daqing power grid is always lack of electric quantity and still the receiving end power grid during the 13 th Five-Year.The current transport capacity of Daqing power grid is scarce,so Daqing power grid has power receiving capability.Finally, four feasible schemes are put forward on the access system of a certain wind farm in Daqing, and the optimal access scheme is determined in terms of economy, voltage level, operation mode and so on.Through the power flow calculation and phase regulation pressure budget calculation, short-circuit current calculation, stability calculation and other various data verify the validity and feasibility of the scheme.In the end the advantages and disadvantages of the method used in this paper are summarized and the research methods of wind power capacity are prospected.