提高电能效率的自备电厂并网备用容量费用计算模型

Calculate model about the charges for reserve capacity of auxiliary power plant on grid for enhancing the electric efficiency

自备电厂并网备用容量费的计算是我国电力市场化改革所面临的急待解决的问题之一.从概率统计学的角度,分析所有与供电公司并网的自备电厂所需要备用容量的各种情况以及其对应的概率分布,并求其期望值作为计算备用容量的依据;在此基础上,采用熵值法对供电公司和自备电厂收取并网备用容量费的收益风险进行度量,并对它们的收益风险进行比较;从平衡供电公司与自备电厂收益风险角度,构建它们的收益风险平衡模型,并采用间接搜索法对其进行求解.算例表明:所构建并网备用容量费计算模型是可行的,可以减少电网和电厂的投资,提高电能的利用效率,且对平衡供电公司与自备电厂之间的利益具有一定的参考作用.

One of urgent solved problems confronted with electricity market reformation in china was the＇ calculation of the on-grid reserve capacity charge for the auxiliary power plants. The paper analyzed the all conditions of the necessary reserve capacity for all auxiliary power plants connected with power-supply company and their corresponding probability distribution. And their expection was as the warrant of calculating reserve capacity. On this basis, the benefit-risk of power-supplying company and auxiliary power plants resulted from collecting the reserve capacity charges of auxiliary power plants were evaluated with entropy theory and were compared each other.The balanced model of the benenfit-risk was constructed from balancing power-sul^plying company and auxiliary power plants, and was solved by indirect search theory. The example shows the presented calculation model of reserve capacity charges is feasible, and it can reduce the investment of power grid and generations, improve the electric efficiency. Further more there is some reference for balancing the benefit between power-supplying company and auxiliary power plants.