不同零售合同模式下的售电公司多目标购售电决策建模

Multi-target Electricity Procurement and Sale Strategies Modeling of Electricity Retailers under Different Retail Contract Modes

竞争性的售电市场环境中,为客户提供灵活多样的零售业务是提升售电公司竞争力的关键。根据售电公司与客户对于利润和风险的不同偏好,提出2种零售合同模式:固定价差合同与直接分成合同。考虑零售合同价格机制对客户用电行为的激励,建立了价格型需求响应模型;为促进客户主动参与电能管理,建立了激励型需求响应模型;并建立了零售合同模式下考虑售电公司收益与客户电费支出满意度的售电公司多目标购售电决策模型;最后,进行了案例验证。其中,针对售电公司不同负荷特性的工商业客户对于零售合同的自由选择构建了4种购售电方案,并在帕累托前沿中寻找兼顾售电公司和工商业客户利益的多目标函数折中解,可以分析售电公司的最优费率制定方案、双边合同电量分配方案以及现货市场购电方案等,为售电公司购售电决策提供参考。

In a competitive environment of electricity sale market,providing customers with flexible and diverse retail business is the key point to improve the competitiveness of electricity retailer.According to the different preferences of electricity retailer and customers for profit and risk,fixed spread contract and direct sharing contract are proposed.Considering the incentive of retail contract price mechanism on customers’ behavior,a price-based demand response model is established.In order to promote customers’ enthusiasm in power management,an incentive demand response model is established.Then,a multiobjective procurement and sale strategy model of electricity retailer is established under retail contract modes considering the interests of electricity retailer and customers’ electric cost expenditure satisfaction.Finally,case verification is conducted.Four electricity purchase schemes are constructed to model the free choice of retail contracts by two type customers with different load characteristics.Compromise solutions of the multi-objective function taking into account the interests of electricity retailer and customers are found in the Pareto frontier,then the optimal pricing scheme,the electricity energy allocation scheme of bilateral contracts and the electricity purchase scheme in the spot market are analyzed,which can provide reference of the electricity procurement and sale strategies for electricity retailer.