Research On The Booster Transformer Economic Operation And Its Control Strategy In Longwan Wind Power Plant

As the energy and environmental problems are increasingly severe, wind energy as a kind of clean and renewable energy has attracted more and more attention and the wind power technology has developed quickly. However, due to the volatility, intermittent and other characteristics of wind energy, the output of wind power is random fluctuation. With the increasing proportion of wind power in the power grid, the volatility and intermittent of wind power output will bring adverse effects to the safe operation and power quality of power system. Especially in the wind farm, the economy will be greatly affected by the instability of the wind power output. Therefore, how to plan the strategy of substation operation and control has become an urgent problem to be solved.According to the characteristics of wind energy, such as volatility, intermittent,combined with the actual conditions in the daily operation of the wind farm in Longwan, this topic completed the wind power forecast based on historical data and the optimal operation strategy of the booster substation of the wind farm was studied. Firstly, this paper introduced the transformer power loss calculation method, researched economical efficiency of transformers in parallel operation and breakdown of the running state respectively, and divided the transformer economic zone. Secondly, the theory of random time sequence was introduced, and short-term wind power prediction model was established according to the characteristics of the volatility of wind power output. By using the model, real time prediction of wind power was achieved. According to the annual wind power history data, the analysis of these data was done in years as a cycle, and put forward the operation mode of the periodic based on the regularity of the data presented by the overall. Considering the short-term wind power prediction results with periodic historical data analysis results, three kinds of substation operation decision model were proposed, the advantages and disadvantages of the model discussions were discussed as well, and selected the most appropriate model in the end.