提升风电并网系统调度计划可信度的氢储能系统经济效益计算研究

发布时间：2018-10-05 17:20

【摘要】：风电出力固有的半可调、半可控特性给风电及其并网系统带来了极大的困扰,如何在平滑风电出力的同时兼顾减少弃风一直是制约风电大规模开发与并网的技术瓶颈。利用富裕风电电解水制氢,将制得的氢(氢能)以合理的形式就地储存起来,待风电出力出现缺额时将氢能通过燃料电池能装置转化为电能释放出来,构成耦合燃料电池的风电—氢储能能量联动系统。本文针对风电—氢储能能量联动系统(Hydrogen Energy Storage System,HESS)的经济性,建立利用HESS提高风电并网调度计划的可信度的经济效益计算模型。首先,分析HESS提高风电并网调度计划可信度的机理,提出计及风电预测出力、实际出力和调度出力的氢储能系统提高风电并网调度计划可信度的充放电价格策略;其次,建立计及HESS直接经济收入和间接经济收入的HESS收入数学模型、计及HESS固定成本和可变成本的HESS成本数学模型,在此基础上,构建提高风电并网调度计划可信度的HESS经济效益计算数学模型;最后,为提高运算的效率和准确性,增强研究成果的推广应用价值和普遍适用性,编者基于VC++软件平台编制提升风电并网系统调度计划可信度的HESS经济效益计算软件(HEBCAS),该软件可自动加载处理风电数据、自动划分氢储能充、放电区间、自动归算氢储能系统相应区间上的充、放电功率以及氢储能系统不同时间和空间尺度上的经济性指标。本文以某风电场为仿真验证对象,选取某天的风电预测数据、风电调度数据和风电实际出力数据,对所建HESS提高风电并网系统调度计划可信度的经济效益计算数学模型进行仿真验证,并针对验证结果分别分析经济效益对风电调度误差和氢储能系统额定功率的敏感性,结果表明构建的HESS经济效益计算模型的正确性。研究结果可为风电—氢储能系统前期投建的经济性评价提供数据参考,拓宽风电大规模有效并网路径。
[Abstract]:The inherent semi-adjustable and semi-controllable characteristics of wind power have brought great trouble to wind power and its grid-connected system. How to smooth the wind power output and simultaneously reduce the abandoned wind is the technical bottleneck that restricts the large-scale development and grid connection of wind power. Using rich wind power to electrolyze water to produce hydrogen, the produced hydrogen (hydrogen energy) is stored in place in a reasonable form, and hydrogen energy is converted into electric energy through the fuel cell energy unit when there is a gap in wind power output. A coupled fuel cell wind-hydrogen energy storage system. Aiming at the economy of wind power and hydrogen energy storage energy linkage system (Hydrogen Energy Storage System,HESS), this paper establishes an economic benefit calculation model to improve the reliability of wind power grid scheduling plan by using HESS. Firstly, the mechanism of HESS to improve the reliability of wind power grid scheduling plan is analyzed, and the charging and discharging price strategy of hydrogen storage system considering wind power prediction, actual output and dispatching force to improve the reliability of wind power grid scheduling plan is proposed. The mathematical model of HESS income including direct and indirect economic income of HESS is established, and the mathematical model of HESS cost considering HESS fixed cost and variable cost is also established. In order to improve the reliability of wind power grid connection scheduling plan, the mathematical model of HESS economic benefit calculation is built. Finally, in order to improve the efficiency and accuracy of the calculation, the research results are popularized and applied value and universal applicability are enhanced. Based on VC software platform, the editor compiled HESS economic benefit calculation software (HEBCAS), which can automatically load and process wind power data and divide hydrogen storage charge and discharge range automatically. The charging and discharging power of hydrogen storage system and the economic indexes of hydrogen storage system on different time and space scales are calculated automatically. In this paper, the wind power forecasting data, wind power dispatching data and actual wind power output data are selected for a certain wind farm as the simulation verification object. This paper simulates the mathematical model of HESS to improve the reliability of scheduling plan of wind power grid connected system, and analyzes the sensitivity of economic benefit to the error of wind power dispatching and the rated power of hydrogen storage system according to the results of the simulation. The results show that the HESS economic benefit calculation model is correct. The results of the study can provide a data reference for the economic evaluation of wind power and hydrogen storage system in the early stage, and widen the effective grid connection path of wind power on a large scale.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM614

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