【作者】 赵儆；

【导师】 夏清； 康重庆；

【作者基本信息】 清华大学 ， 电气工程， 2005， 博士

【摘要】 随着电力系统规模的扩大和市场化步伐的加快,电力系统运行过程中的安全风险和市场风险相互交织、相互影响,研究电力市场中电力系统运行可靠性的新问题已经成为该领域的研究热点。本文分别从电力系统充裕度和安全度的角度,研究了在电力交易过程中考虑可靠性的原理和方式,为保障电力市场的良好发展和电力系统的安全稳定运行提供了强有力的理论支持。本文首次提出了将可靠性作为一种资源进入电力市场的新理念,建立了充裕度市场交易理论,提出了利用市场交易机制均衡电力系统充裕度提供者和受益者的利益。本文研究了充裕度市场中市场成员属性、交易商品的类型、市场的组织方式、市场成员的申报方式等,构建了充裕度市场的交易算法。本文引入序列运算理论,对充裕度市场交易理论中的成员申报行为、市场均衡过程等进行规范化处理,建立了单个市场成员对系统充裕度影响的量化方法,提出并证明了充裕度可加性理论,实现了充裕度市场交易理论的解析化。本文通过深入分析发电商生产成本的构成,揭示了发电商容量成本的本质意义,建立了发电侧电力市场中基于电力系统边际发电容量成本的可靠性电价的形成机制和计算方法,提出了组织发电侧竞价上网的充裕度市场交易模型。本文研究了电力系统元件故障风险对电网购电成本的影响,首次提出了电力系统元件的市场效用风险指标,建立了电力系统的市场效用风险评估体系,提出了评估元件故障对电网购电成本影响的量化计算方法。以此为依据,在传统的日前购电决策模型中引入了电力系统元件的效用风险指标,构建了兼顾购电成本和电力系统效用风险的短期电力交易新模型,并提出了实用的求解方法。本文揭示了用于电力系统规划的故障模型对评估电网运行和市场风险的不足,提出了评估电力系统元件运行可靠性的新模型。该模型考虑了电力系统元件的持续运行时间、既往检修情况和运行环境等因素,提出了元件故障率模型的伸缩理论,分析了科学评估电力系统元件安全性所需要积累的数据类型。本文系统研究了电力市场发展中可靠性领域的新问题,初步建立了相应的分析方法。本文工作对电力系统安全经济运行具有重要的参考价值。更多还原

【Abstract】 With the development of power system and the acceleration of power system deregulation, the problem of power system reliability in the deregulated environment is turning into a hot issue in the domain. The thesis proposes approaches taking reliability into account during market trading process, which are studied from the aspects of power system adequacy and power system security respectively. The work provides powerful theories that could guarantee optimal development of electricity market and secure operations of power systems. In the thesis, for the first time, power system reliability is treated as a special resource that could be traded in electricity markets and the theory of adequacy market is then proposed to level the need for power system adequacy and the supply of generation capacity by way of market trading. The thesis also proposes the property of adequacy market member, the type of the commodity traded in the market, the operation mode of the market and so on. An arithmetic of the market trading model is also proposed in the thesis. To formalize adequacy market members’ behavior and market balancing process, the sequence operation theory is introduced. The thesis works out a set of methods to precisely evaluate the influence of any market member on system adequacy, which are integrated into a theory named adequacy addiblility theory. Based on the thorough analysis on cost compositions of generation, the essential of capacity cost of generation is disclosed, furthermore, a reliability price mechanism based on capacity cost of generation is built in the thesis. The thesis also proposed a supply side adequacy market trade model. The thesis studies the influence of power system components’ outage on the cost of purchasing electricity. For the first time, utility risk index is proposed, based on which a utility risk evaluation system is built. The thesis also introduces utility risk into the market decision model and an arithmetic of that is also proposed. The thesis discloses the deficiency of traditional ways of evaluating risk of power system operation and market trade process and proposes a new component reliability evaluation model which take many factors into account such as components’ continued operation time, maintenance histories of components, components’operation environment and so on. A power system component reliability flex model is proposed and data needed to evaluate power system components’ reliability scientifically are also analyzed. The thesis studies new problems of power system reliability, and analyzing method correspondingly. The work of the thesis could be useful for secure and economical operation of power systems.更多还原