摘要
备用容量关系到电力系统的安全运行和可靠性。在电力市场环境下,备用容量的交易模式和定价机制是引导发电公司作出正确的投资决策,保证备用容量供需平衡的重要因素。文中针对当前的在电力市场环境下备用容量交易模式进行了分析,并提出了不足之处。对此,该文提出了预付费备用容量交易模式和基于平均利润率的容量定价机制。该方法明确了容量市场的交易对象为备用容量,电网公司对订购的备用容量预先向发电公司支付费用,备用容量的定价保证发电公司的容量市场交易与能量市场交易获取同样的利润率,以此引导发电公司正确地投资备用容量。该文的论证和算例表明该方法可以确保发电公司投资足够满足系统可靠性需求的备用容量,并且防止过量投资。
Reserve capacity contributes to system security and reliability. In electricity market environment, the transaction mechanism and price strategy of reserve capacity is important to direct the act of generators′ investment and maintain the balance between its demand and supply. This paper analyses the existed transaction mechanism and discloses their limitations. Then, the paper presents a prepaying transaction mechanism and a price strategy based on average profit margin. With this policy, the commodity is reserve capacity, grid corporation prepays the reserve capacity to generators, and the price of reserve capacity ensures the profit margin of generators in capacity market is the same as that in energy market. As a result, generators will be inspirited to invest enough reserve capacity to ensure system reliability and prevent over-investment.
出处
《继电器》
CSCD
北大核心
2005年第3期6-9,36,共5页
Relay
关键词
备用容量
系统可靠性
容量市场
预付费
平均利润率
reserve capacity
system reliability
capacity market
advance payment
average profit margin
