三峡电力市场的输电定价与阻塞管理

在以促进发电和零售竞争为主要特征的电力市场中，输电系统由于其固有的特征仍然保持垄断运行。但作为实现竞争的场所，输电系统必须对市场参与者开放并提供无歧视的服务。这样，如何对输电服务定价就成为一个十分重要的问题。文中首先简要论述了现有的输电定价机制以及国际上几个有代表性的电力市场所采用的方法，在此基础上结合三峡电力系统的特点，提出了三峡电力市场输电定价的框架及其实现方法。然后，对输电系统运行中的另一个重要问题即输电阻塞的管理和定价做了简要论述，并介绍了目前运行的电力市场所采用的一些方法。最后，对三峡电力市场中的阻塞管理与阻塞电价做了初步研究，提出了建议。

TRANSMISSION TARIFFS AND CONGESTION MANAGEMENT FOR THREE GORGES ELECTRICITY MARKET

The power industry restructuring has led to competition in the generation and retail sides,while the transmission system rem ains a regulated monopoly due to the economic,geographical and technical control reasons.However,acting as a fair playing field ,the transmission system must offer open access on an equitable basis to all participants such as power suppliers and consumers.Hence,how to price transmission service has become a very importantproblem.Without exception this is also a vital issue for the prospecting Three Gorges electricity market.In this paper,a brief introduction to existing transmission pricing methods is first presented,followed by an overview of methods currently em ployed in several electricity markets worldwide.A transm ission pricing framework is then outlined and implementation methods proposed for the Three Gorges electricity market.Issues concerning congestion m anagem ent and pricing are next discussed and available methods briefly surveyed.Finally,a preliminary study on congestion management and pricing for the Three Gorges electricity m arket is m ade and several suggestions presented.