节点风电全边际运行价值研究

Research on node comprehensive marginal operation value of wind power

风电价值量化对于风电发展至关重要。提出节点风电边际价值的概念;考虑风电对能耗、排放、备用、线路潮流及系统网损的影响,提出一种更为全面的风电边际价值评估方法,包括风电能耗价值、环境价值、备用价值、网络传输价值和网损价值5个部分;以系统运行成本最小为目标,建立改进的经济调度优化模型;对模型进行线性化处理,并利用拉格朗日函数计算得到风电全边际运行价值。算例分析并网位置、风电出力和负荷水平等因素对风电价值的影响,结果验证了所提方法的有效性。

The quantization of wind power value is critical for wind power development.The concept of node marginal value of wind power is proposed.Considering the influence of wind power on energy consumption,emission,reserve,line power flow and system power loss,a more comprehensive marginal value evaluation method for wind power is proposed,which includes five parts of wind power energy consumption value,environmental value,reserve value,network transmission value and power loss value.An improved economic dispatching optimization model is built,which takes the minimum system operation cost as its object.The model is linearized,and Lagrange function is used to calculate the comprehensive marginal operation value of wind power.The influence of factors,such as grid-connection location,wind power output and load level,etc.,on wind power value is analyzed by an example,and the results verify the effectiveness of the proposed method.