当量电价体系及相关制度设计:(七) 阻塞管理的当量电价法

输电阻塞本质上是输电容量的不足。传统的短期边际成本输电定价方法使网公司的收入严重不足，相应电价也不能给出充分反映输电容量不足的信号，而输电当量电价却有独特优势。在输电当量电价模型基础上，采用用户上报支付意愿的方法，建立了直接阻塞管理模型。该模型还可以在仅仅用电价调控阻塞无能为力的情况下合理削减负荷，同时又可获得充足而又合理的电网扩建资金，有利于输电网的投资扩容，从根本上缓解阻塞问题；通过用户上报支付意愿，引导用户参与阻塞管理。算例中将输电当量电价法与传统短期边际成本方法做了比较，并讨论了与支付意愿有关的市场特性。结果表明，该方法更合理、更有效。

ELECTRICITY VALUE EQUIVALENT (EVE) PRICING SYSTEMS AND RELEVANT SYSTEM DESIGN Part Seven Transmission Congestion Management Methods Based on EVE Pricing

The line congestion essentially reflects the shortage of transmission capacity, but the shortage of transmission capacity cannot be sufficiently reflected by the traditional short run marginal cost (SRMC) pricing method. This paper presents a new congestion management method based on the transmission electricity value equivalent pricing method (TEVE). By introducing the willingness-to-pay of the network customers, the new method gives a rational way for load curtailment when the re-dispatch cannot thoroughly relieve the line overloads. Due to the TEVE pricing method has the features of adequately returning the network investments and reasonably gathering more funds for network expansion, the new method can solve the congestion problems more efficaciously. Besides, the new method introduces the customers' participation for congestion management using the willingness-to-pay. Finally a case study is given. This key project is supported by National Natural Science Foundation of China (No. 59937150).