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可向特定负荷定时限独立供电的储能系统优化配置
引用本文:孙鸣,桂旭.可向特定负荷定时限独立供电的储能系统优化配置[J].电力系统自动化,2018,42(14):115-122.
作者姓名:孙鸣  桂旭
作者单位:教育部光伏系统工程研究中心(合肥工业大学)
基金项目:国家高技术研究发展计划(863计划)资助项目(2015AA050603)
摘    要:在新能源发电密集接入区的配电网用户侧配置储能设备可作为多能互补分布式能源综合利用的有效补充,能提高能源系统综合效率并满足用户对提高供电可靠性的要求。蓄电池储能系统在供电系统正常运行状态下可以消纳或平抑新能源发电功率的波动;在供电系统故障状态下,储能系统可向特定负荷提供一定时限的独立供电。以蓄电池储能系统全寿命周期内的年投资回报率最大为目标,在保证供电区域内特定负荷定时限独立供电的前提下,研究储能系统的最优配置。首先,建立包括蓄电池全寿命周期内"低储高发"的套利收入在内的4项收益指标和全寿命周期成本的经济效益模型。然后,提出一种通过提取关键影响因子逐步简化优化模型的方法。最后,通过算例分析比较了铅炭电池、磷酸铁锂离子电池和梯次电池在保证特定负荷1h独立供电下的储能配置和年投资回报率,验证了所建模型和求解方法的可行性。

关 键 词:用户侧  蓄电池储能系统  独立供电  最优配置  全寿命周期  经济效益  关键影响因子
收稿时间:2017/9/10 0:00:00
修稿时间:2018/5/23 0:00:00

Optimal Configuration of Battery Energy Storage System Providing Independent Power Supply for Specific Load During Certain Time
SUN Ming and GUI Xu.Optimal Configuration of Battery Energy Storage System Providing Independent Power Supply for Specific Load During Certain Time[J].Automation of Electric Power Systems,2018,42(14):115-122.
Authors:SUN Ming and GUI Xu
Affiliation:Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China and Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei 230009, China
Abstract:Energy storage device which is equipped on the user side of distribution network in the new energy power generation intensive access area can be used as the effective complementary for multi-energy comprehensive utilization. It can improve the efficiency of energy systems and meet the user requirements on improving the reliability of power supply. Battery energy storage system(BESS)can absorb or stabilize the new energy power generation fluctuations in the normal operation of the power supply system. Moreover, it can also provide independent power supply for a specific load during certain time in the power supply system failure state. Taking the maximum annual investment return rate of BESS in the distribution network within its whole life cycle as the objective, the optimal allocation of the energy storage system is studied under the premise of ensuring independent power supply for the specific load of the power supply area during certain time. Firstly, the economic benefit model of configuring BESS is established, including four income indicators(such as the income of arbitrage by low storage and high incidence in the whole life cycle of BESS)and the life cycle cost. Then, a method to gradually simplify the optimization model by extracting the key influencing factors is put forward. Finally, the energy storage configurations and annual investment return rate of Pb-C battery, lithium iron phosphate battery and second-use battery are compared through the case studies to ensure one-hour independent power supply for the specific load of the power supply area. The result validates the feasibility of the established model and the proposed algorithm.
Keywords:user side  battery energy storage system(BESS)  independent power supply  optimal allocation  whole life cycle  economic benefit  key influencing factors
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