Energy-saving Operation Technology of Wind Farms Based on Reactive Power Optimization Strategies

The purpose of energy-saving and optimized operation technologies is to reduce the power loss of the wind farms during the power generation. Firstly, the mathematical models of power loss of the transformers, STATCOMs, wind turbines and transmission lines are proposed. The influence of the wind speed frequency distribution has been considered in the models to promote accuracy. The relationship between the power loss and the load of the wind farms is researched. Secondly, the Equivalent Power Consumption Rate (EPCR) is proposed to evaluate the accurate effect of energy-saving and optimized operation technologies. Lastly, the novel optimized operation strategies of reactive power for wind farms are proposed, including the reactive power optimization between the wind turbines and the STATCOMs, the reactive power optimization among the transmission lines, the reactive power optimization among the wind turbines. The field tests verify the effectiveness of the strategies proposed.