风电容量充裕性成本分析模型和方法研究

Study on Analysis Model and Method of Wind Power Adequacy Capacity Cost

风电容量可信度低,大规模风电并网将大幅增加电力系统的容量充裕性成本是电力规划和运行中需要重点考虑的一个问题。对风电并网对系统容量充裕性影响机理进行深入分析,提出了风电容量充裕性成本的分析模型和方法,建立了基于有效负荷承载能力算法(ELCC)的风电容量可信度计算模型和基于容量可信度的充裕性成本计算模型。案例研究表明,随着接入风电规模的增加,该省级电网的风电容量可信度随之下降,而风电引起的容量充裕性成本逐步上升。当风电发电量占用电量比量达到10%时,对应的容量充裕性成本已高达0.06元/(kW.h)。

Large-scale wind power integration will sharply increase the power system adequacy capacity cost due to the low capacity credit of wind power,which needs to be considered in power planning and operation.An analytical model and method of wind power adequacy capacity cost is proposed on the basis of an in-depth analysis of the impact mechanism of wind power integration on power system adequacy capacity.A wind power capacity credit calculation model is established based on the Effective Load Carrying Capability Algorithm and an adequacy capacity cost calculation model was established based on capacity credit.The case study shows that the wind power capacity credit decreases and the adequacy capacity cost increases with increase of the wind power capacity.The adequacy capacity cost reaches as high as 0.06 yuan/kWh when the wind power capacity makes up 10% in the power system.