并网风力发电场的最大注入功率分析

风力发电场的最大注入功率分析是风电场规划和运行的一项重要内容.文章建立了异步发电机的稳态数学模型,给出了包含风电场的电力系统潮流的交替迭代计算方法,并结合实际风电系统,分析了确定并网风电场最大注入功率的主要因素.计算结果表明,系统运行方式、风电机组无功补偿量、风电场与系统联络线的电抗与电阻之比的大小等都会影响风电场的最大注入功率,对于一个实际的风电系统,要最终确定其最大注入功率必须进行系统的计算分析.

ANALYSIS ON MAXIMUM POWER INJECTION OF WIND FARM CONNECTED TO POWER SYSTEM

The analysis of maximum power injection of wind farm is an important issue in the planning and operation of wind farm. Here, the steady state model for the asynchronous generator is established, an alternative iterative method is proposed to calculate the power flow of power system with wind farm connected, and then in the light of a practical wind farm the main factors influencing the determination of the maximum power injection of a connected wind farm are analyzed. The calculation results show that the operating mode of the power system, reactive power compensation of wind turbine and the ratio of reactance x to the resistance r of the tie-line to connect wind farm with power system are all important factors influencing the maximum power injection of the wind farm. For an actual wind farm, it is necessary to conduct systematic calculation and analysis in the eventual determination of its maximum power injection.