【作者】 孙渝江； 张谦； 俞集辉；

【Author】 Sun Yu-Jiang~1 Zhang Qian~2 Yu Ji-Hui~2 1.Chongqing Electric Power Corp.Chongqing 400030,China 2.High Voltage and Electrical Engineering New Technology Key Laboratory of Ministry of Education,Chongqing University,Chongqing 400030,China

【机构】 重庆电力公司； 重庆大学高电压与电工新技术教育部重点实验室；

【摘要】 在电力市场环境下,采用传统实时电价进行收费会导致电网收支不平衡,不利于电网公司的良性发展,因此需要对实时电价加以修正。修正的关键在于如何制订各节点的单位输电固定成本,即输电固定成本如何在用户间分摊的问题。针对该问题,文章提出采用潮流跟踪进行实时电价修正。通过对潮流跟踪基本原理的研究,基于图论提出了一种路径搜索算法,并根据该路径搜索算法提出了按比例分配原则进行顺流跟踪和逆流跟踪的具体算法, 解决了算法中的几个关键问题,得到输电用户对线路的占用程度,根据得到的占用程度来进行输电固定成本分摊, 以此得到发电机节点输电固定成本,并将其引入原有实时电价中,对实时电价进行修正,得到综合电价。通过5 节点系统的实例计算,论证了该潮流跟踪算法的可行性和有效性,以及分摊过程的合理性。更多还原

【Abstract】 In the electricity market environment,charging based on the traditional spot electricity price will result in the payment imbalance of electric network,and go against the development of the power system,so it is necessary to modify the spot price.The key of the modification lies in how to calculate the fixed per unit transmission cost of every node,that is how to allocate the fixed transmission cost to the users.In order to solve this problem,power flow tracing is developed to modify the spot price.By making a study of the fundamental principle of power flow tracing,the method of path searching is put forward based on the graph theory.By using the method,downstream tracing algorithm and upstream tracing algorithm according to the proportional distribution principle are given in this paper.Furthermore,in order to improve the computational efficiency of the algorithm,branch expunction method is introduced in the algorithm to optimize the node order.A 5-bus sample system is used to prove this algorithm is feasible and valid.Finally,by using the result of power flow tracing to get fixed node transmission cost and introducing it to modify the spot price,the synthetical price can be achieved.更多还原