提高风电调度入网规模的储能系统控制策略研究

发布时间：2018-07-08 12:42

本文选题：大规模储能 + 滚动调度　；参考：《东北电力大学》2014年硕士论文

【摘要】：由于风电功率的波动性和不确定性，大规模风电联网运行给电网安全经济运行带来了诸多不利影响，制约了既有电网的风电接纳规模。储能系统具有对功率和能量的时空平移能力，可有效抑制风电功率的波动性提高风电功率的确定性，因而被认为是提高既有电网风电接纳规模的有效手段。然而在目前的技术水平下，储能系统造价依旧较为昂贵。因此，如何选择储能系统的运行控制目标、如何设计储能系统的运行控制策略及其经济性评价是大规模储能应用研究领域的重要课题。本文针对风电调度过程中因过分高估风电功率不确定性风险而导致的弃风限电问题，提出利用大规模储能提高风电功率的确定性，防止电网过度预留宝贵空间，提高风电的调度入网规模。提出了基于概率区间预测的风电滚动调度策略；研究了应对风电调度风险的储能系统运行控制策略；构建了储能系统经济性评估模型，分不同的概率区间预测场景评估了其经济性。研究工作能够为利用大规模储能提高风电接纳规模研究提供参考，具有一定的工程实践意义。
[Abstract]:Due to the fluctuation and uncertainty of wind power, large-scale wind power network operation has brought many adverse effects to the safe and economic operation of power grid, and restricted the scale of wind power acceptance of the existing power grid. The energy storage system has the ability of time and space translation of power and energy, which can effectively restrain the fluctuation of wind power and improve the certainty of wind power. Therefore, it is considered to be an effective means to increase the scale of wind power acceptance in existing power grids. However, under the present technical level, the cost of energy storage system is still more expensive. Therefore, how to select the operation control target of energy storage system, how to design the operation control strategy of energy storage system and its economic evaluation are important topics in the field of large-scale energy storage application research. In view of the problem of abandoning wind power limit caused by overestimating the uncertainty risk of wind power in wind power dispatching process, this paper proposes to use large-scale energy storage to improve the certainty of wind power, and to prevent excessive reserve of valuable space in power grid. Increase the scale of wind power dispatching network. The rolling scheduling strategy of wind power based on probabilistic interval prediction is put forward, the operation control strategy of energy storage system is studied to deal with the risk of wind power dispatching, and the economic evaluation model of energy storage system is constructed. Different probabilistic interval prediction scenarios are used to evaluate its economy. The research work can provide a reference for the study of using large scale energy storage to increase the scale of wind power acceptance, and has a certain engineering practical significance.
【学位授予单位】：东北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM614;TM73

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