弃水电量计算模型的研究

发布时间：2018-03-04 02:34

本文选题：弃水电量　切入点：系统消纳能力　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：水电资源是清洁无污染的可再生能源,而弃水是水电资源利用的重大损失。对弃水电量的准确计算,有利于摸清水电资源利用率,对于水电和电网规划、水火调度运行、检修安排以及弃水电量交易等问题具有重要意义与价值。弃水电量应急交易是减少弃水、提高水电利用率的重要举措,科学合理设计交易机制有利于规范弃水电量临时交易,实现丰水期低谷水电的优化利用,提高水资源利用率。论文以考虑电力系统消纳能力的弃水电量计算模型和应急交易机制为重点展开研究。首先,在对弃水电量计算和弃水电量应急交易研究现状进行总结分析的基础上,从水电站运行特性出发,剖析总结了弃水的成因与特点,提出了考虑系统消纳弃水能力的弃水电量及水电可用电量的定义；其次,通过对系统消纳弃水电量前后发电成本和环保成本变化情况的分析,建立了以水电机组可调出力、火电机组最大可调能力、火电机组技术出力以及潮流约束等为约束条件,以发电经济成本和环保成本变化所带来的经济效益最大为目标函数的考虑系统消纳能力的弃水电量计算模型；然后,进一步完善了弃水电量效益的定义及计算方法,为合理、科学地评价弃水电量效益进行了有益探讨,并通过标准算例验证了本文模型和方法的有效性；最后,结合弃水电量的特点,提出了按照基数电量分割的弃水电量分割方法,设计了符合弃水电量特点的应急交易机制,并通过算例分析论证了该交易模式存在的风险及提出风险管理的措施。
[Abstract]:Hydropower resources are clean and pollution-free renewable energy, while abandoned water is a great loss in the utilization of hydropower resources. Accurate calculation of the quantity of abandoned hydropower resources is helpful to understand the utilization ratio of hydropower resources, and for hydropower and power network planning, water and fire dispatch and operation, It is of great significance and value to arrange the repair arrangement and deal with the quantity of abandoned hydropower. The emergency transaction of abandoning the quantity of hydropower is an important measure to reduce the abandonment of water and improve the utilization ratio of hydropower. The scientific and reasonable design of the transaction mechanism is conducive to standardizing the temporary transaction of the quantity of abandoned water and electricity. To realize the optimal utilization of the valley hydropower in the high water period and to improve the utilization rate of water resources. This paper focuses on the calculation model and emergency transaction mechanism of abandoned hydropower quantity considering the capacity of power system absorption. Firstly, based on the summary and analysis of the current research situation of the quantity calculation and emergency transaction of abandoned hydropower quantity, this paper focuses on the analysis of the current situation of the research on the calculation of the quantity of abandoned hydropower and the mechanism of emergency transaction. Based on the operation characteristics of hydropower stations, the causes and characteristics of water disposal are analyzed and summarized, and the definition of abandoned hydropower capacity and hydropower consumption capacity considering the system's capacity to absorb and discard water is put forward. Based on the analysis of the change of power generation cost and environmental protection cost before and after the system accepts and discards the amount of hydropower, the constraints such as the adjustable power of hydropower unit, the maximum adjustable capacity of thermal power unit, the technical output of thermal power unit and the constraint of power flow are established. Taking the economic cost of power generation and the change of environmental cost as the objective function, considering the capacity of the system to absorb, the calculation model of the quantity of abandoned hydropower is given, and the definition and calculation method of the benefit of the quantity of abandoned hydropower is further improved, which is reasonable. This paper makes a useful discussion on evaluating the benefit of abandoned hydropower quantity scientifically, and validates the validity of this model and method through standard calculation examples. Finally, combining the characteristics of abandoned hydropower quantity, the method of dividing abandoned hydropower quantity according to the cardinal quantity of electricity is put forward. In this paper, an emergency transaction mechanism which accords with the characteristics of abandoned hydropower is designed, and the risk existing in the transaction mode and the measures of risk management are demonstrated by an example.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV72;TM744

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