含风电电力系统的月度机组组合模型

为在更长的时间尺度上统筹协调各类发电资源,建立含风电电力系统的月度机组组合模型.分析了保证中长期电量交易顺利进行的均衡调度和节约能源、减少污染物排放的节能发电调度,建立协调电力市场和节能发电的月度机组组合模型.该模型综合考虑了中国"一机一价"和"标杆电价"的上网电价机制,以允许机组间均衡电量进行转移的差别电量为基础,以节能发电优先序列表作为电量转移顺序,利用风电功率相关性分析结果模拟生成考虑尾部相关性和秩相关性的风电功率可能场景,并依据火电机组热启动和温态启动的特点选取模型的计算粒度.算例结果表明:该模型可以在降低机组启停次数的情况下,协调含风电系统的整体购电成本和总煤耗.

Monthly unit commitment model of power system with integrated wind power

In order to coordinate the generator resources in longer time scales, a monthly unit commitment model of power system with integrated wind power is created. The balanced dispatch mode which can ensure medium-long electric quantity executed smoothly and the energy-saving dispatch mode which can save energy, reduce pollution has been analyzed first, then a unit commitment model coordinating electricity market and energy-saving has been build. In the model, the "pay as bell" and "benchmark price" electricity pricing mechanism has been considered. The model is based on the differential electric quantity which transfers from balanced energy, loaded generators by using the energy-saving priority list, simulated wind power scenarios considering tail-dependence and rank correlation from the previous wind power correlation analysis, and chooses the calculation resolution by thermal generator hot start & warm start characteristic. The calculated example indicates that the model can coordinate the electricity purchase cost and coal consumption under reducing the start-off times of thermal generators.