储能系统用于配电网削峰填谷的经济性评估方法研究

发布时间：2018-04-28 23:15

本文选题：储能系统 + 削峰填谷　；参考：《华北电力大学》2014年硕士论文

【摘要】：经济的快速发展和人民生活水平的不断提高,电力系统出现负荷峰谷差值逐年增大,而最大利用小时数却逐年下降的现象。为了应对日益增长的负荷峰谷差值,需要投入大量人力物力进行电网负荷削峰填谷,但单纯的依靠扩大投资规模增加装机容量,或者单纯的对输配电线路进行升级扩容,不仅耗资巨大,且设备使用率较低。为了解决这一问题,本文提出了利用电池储能系统进行配电网削峰填谷,降低峰谷差值的同时,通过储能系统充放电实现收益。首先,在现有典型削峰填谷控制策略的基础上,提出了适合用于配电网削峰填谷的恒功率充放电策略和考虑实际约束条件的功率差控制策略,通过仿真分析比较了两种控制策略的优缺点；其次,根据电池储能系统应用于配电网的实际情况,分析了储能系统参与削峰填谷的经济性收益和投资成本。其中经济性收益主要包括直接收益、延缓电网设备投资、降低输配电线路网损、降低所需备用容量、降低电网可靠性成本、环境效益和政府补贴等,投资成本主要包括初始投资成本及年运行维护成本；然后,基于各种电池的典型技术特性,选取适合用于配电网削峰填谷的电池,以经济性模型为基础,通过博弈论方法建模,采用遗传算法进行优化,得出多类型储能系统用于配电网削峰填谷的电池选型及其最优容量配置结果；最后,基于定容定型的电池储能系统,进行储能电站规划计算。
[Abstract]:With the rapid development of economy and the continuous improvement of people's living standard, the load peak and valley difference in power system increases year by year, but the maximum utilization hours decrease year by year. In order to cope with the increasing load peak and valley difference, we need to invest a lot of manpower and material resources to cut the load peak and fill the valley, but simply rely on expanding the scale of investment to increase the installed capacity, or simply upgrade and expand the transmission and distribution lines. Not only is the cost huge, but also the equipment utilization rate is low. In order to solve this problem, this paper proposes to use the battery energy storage system to cut the peak and fill the valley in the distribution network, reduce the peak and valley difference, and realize the revenue by charging and discharging the energy storage system at the same time. Firstly, on the basis of the existing typical control strategies for peak cutting and valley filling, a constant power charge and discharge strategy and a power difference control strategy are proposed, which are suitable for peak cutting and valley filling in distribution networks. The advantages and disadvantages of the two control strategies are compared by simulation. Secondly, according to the application of battery energy storage system in distribution network, the economic benefits and investment costs of energy storage system are analyzed. The economic benefits mainly include direct income, delaying investment in power network equipment, reducing network loss of transmission and distribution lines, reducing reserve capacity required, reducing reliability cost of power network, environmental benefit and government subsidy, etc. The investment cost mainly includes the initial investment cost and the annual operation and maintenance cost. Then, based on the typical technical characteristics of various batteries, the battery suitable for peak cutting and valley filling in distribution network is selected, based on the economic model, the model is modeled by game theory. Genetic algorithm is used to optimize the battery selection and optimal capacity configuration of multi-type energy storage system used for peak cutting and valley filling in distribution network. Finally, based on the fixed volume fixed battery energy storage system, the planning calculation of energy storage power station is carried out.
【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】：TM910

【参考文献】