【摘要】 对于发电侧开放的电力市场,如果忽略输电损耗对竞价上网的影响,采用发电报价直接竞价对发电商是不公平的。分析了电网功率的物理分布情况,给出了节点负荷和线路损耗与电源提供功率分量的解析表达式,通过功率分解求出了电源在供电路径上输送的功率及产生的损耗。以费用流守恒为原则,从电源节点开始计算电源在输电网络各节点的电价,构建了电源的发电报价网损修正模型。提出电源的报价应该以电厂为单位报价,而不应该以机组为单位报价,并用网损修正的电厂报价构造了日前市场交易模型。改进IEEE 14节点系统的算例分析结果验证了该模型的可行性和有效性。更多还原

【Abstract】 It is unfair for gencos in an electricity market that is open at generation side and adopts direct bidding by generation bidding while the influence of transmission loss on bidding transaction.The physical distribution of power flow in power grid is analyzed and an analytical expression for the relation of nodal load and network loss to power component supplied by power sources is given.By means of power decomposition the transmitted power from power source along the supply path and its power loss in the supply path can be solved;following the principle of cost flow conservation and starting at power source node,the power prices at transmission nodes are calculated,then a generation bidding model considering the modification of network loss is built.It is proposed that the generation bidding should be based on power plant but not based on generation unit,and a day-ahead market transaction model is built by plant bidding considering the modification of network loss.The feasibility and effectiveness of the proposed model are verified by calculation results of improved IEEE 14-bus system.更多还原