基于交流潮流的双边交易模式下阻塞费用分摊

在电力市场环境下,输电网开放增加了系统阻塞的可能性,现有的阻塞管理方法基本都使用直流潮流模型。提出了考虑P-Q交叉耦合的双边交易对线路使用份额的定义,利用该定义来分摊交流潮流下的阻塞成本。方法是先将总的阻塞费用分给相应的线路,然后利用各线路的使用份额来分摊到各双边交易。该方法不产生销售盈余,通过网损来综合考虑有功和无功对阻塞成本分摊的影响,给市场各参与方提供了准确的经济信息。最后用一个5节点的仿真算例结果证明本文方法的有效性。

A new method for congestion cost allocation considering AC power flow under bilateral transaction

The usage of bilateral transaction considering the inter-action between P-Q is defined in this paper.To improve the accuracy and equity of the existing methods,a new congestion cost allocation method for bilateral is proposed.The system congestion cost is allocated to relative lines firstly,and then to individual bilateral according to its contribution to system congestion.The proposed method eliminates the merchandising surplus,makes losses and congestion cost which are the main aspects of the transmission cost unific.It provides correct economic signals to all the partners of power system.At last,the method is testified with a five-bus system.