摘要
电力交易在库联营的基础上开放双边交易有着重要的市场意义,然而相应的过网服务定价却是一个复杂的问题。该文论述了过网费中除了应考虑输电线路的运行和投资成本回收之外,还应包括网络堵塞和优化调度的机会成本,以及交易中心购自库联营发电并通过输电网提供的负荷跟踪和事故备用辅助服务成本等6项主要成分。由于负荷跟踪和事故备用是两项可选择的辅助服务,从而构成了过网服务的3个水平。应用先期发展的发电与输电当量电价原理和方法,分别建立了3个过网服务水平下的数模和 算法,展现了综合计入电量和容量成本的当量电价原理和方法解决这类复杂问题的优越性。算例给出了3个服务水平下的过网电价日变化曲线和成份,计算表明:当过网主 路径附近存在堵塞.时,过网费率灵敏于负荷水平(峰谷时段)和过网节点(注入与吸出)。该文为日后自动收取过网费,或由政府审定过网费率提供了理论与方法。
Opening bilateral transaction markets on the basis of the Pool ones is of great significance to the power markets, which however brings a complex problem of wheeling pricing. It抯 argued in this paper that there are mainly six components for a wheeling price: the O&M and investment costs to be returned, the opportunity costs come from congestion and dispatch, as well as the costs in load following and operating reserves. The last two are chief ancillary services bought from the Pool generators then supplied to the bilateral traders through the transmission grid. Since the ancillary services are optional, there could be three wheeling service levels. Applying the Electricity Value Equivalent (EVE) generation and transmission pricing methods that have been developed by the authors in advance, in which the energy and capacity costs to be integrated, the paper presents the models and algorithms of wheeling pricing for the three levels. A case study shows that the wheeling prices are sensitive to the system load level and the wheeling buses when congestions exist around the main paths of the bilateral transactions.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第4期1-7,共7页
Proceedings of the CSEE
基金
国家自然科学基金重点资助项目(59937150)
关键词
双边交易
过网服务
当量电价原理
方法
电力工业
electric power market
bilateral transactions
wheeling pricing
electricity value equivalent