摘要
含光伏的冷热电联供(CCHP)园区微网中有储冷、储热和储电多种类型储能装置,其合理协调配置能够对日负荷曲线进行削峰填谷和平抑光伏出力的不确定波动,进而提高微网运行的安全性和经济性。该文采用盒式不确定集描述光伏出力和冷热电负荷的不确定波动特性建立含光伏的CCHP园区微网中储冷、储热和储电多类型储能的协调鲁棒优化配置模型。该双层优化模型以微网年等值投资和运行费用之和最小为目标函数,通过采用Benders分解法,将双层优化问题分解为寻找某个场景下的配置方案主问题和寻找微网典型日运行费用最大的极端场景子问题进行交替迭代求解,以得到对于光伏出力和冷热电负荷不确定波动具有鲁棒性的储冷、储热及储电装置的协调优化配置方案。最后,以某个CCHP园区微网为例,通过与确定性优化配置方案和只优化配置蓄电池储能方案的比较,表明鲁棒配置方案更有利于平抑光伏出力和负荷的不确定波动,有效提高微网运行的安全性,同时多类型储能协调配置比只配置蓄电池储能方案的经济效益更好。
There are many types of energy storage devices including cooling storage,heating storage and power storage in the CCHP campus microgrid with photovoltaics.Its reasonable and coordinated configuration can cut peaks,fill valleys on the daily load curve and suppress uncertain fluctuations in photovoltaic output,then improving the safety and economy of microgrid operation.This paper uses a box-type uncertainty set to describe the uncertain fluctuation characteristics of photovoltaic output and cooling,heating,and electrical load to establish a coordinated and robust optimization configuration model for multiple types of energy storage in CCHP park microgrid with photovoltaics.This two-layer optimization model takes the minimum sum of the annual equivalent investment and operating cost of the microgrid as the objective function.By adopting the Benders decomposition method,the two-layer optimization problem is decomposed into the main problem of finding the configuration scheme in a certain scenario and the typical problem of finding the microgrid.The extreme scenario sub-problem with the largest daily operating cost is solved alternately and iteratively to obtain a coordinated and optimized configuration scheme of cold storage,heat storage and power storage devices that is robust to uncertain fluctuations in photovoltaic output and cooling,heating,and electrical loads.Finally,taking a CCHP park microgrid as an example,the comparison with the deterministic optimal configuration scheme and the optimal configuration of batteryenergy storage only schemeshows that the robust configuration scheme is more conducive to smoothing the uncertain fluctuations in photovoltaic output and load,and effectively improving the safety of microgrid operation.Meanwhile,the coordinated configuration of multiple types of energy storage has better economic benefits than the battery energy storage only solution.
作者
高军伟
陈泽雄
郑欣
陈文炜
唐智强
王雪峰
林亚培
GAO Junwei;CHEN Zexiong;ZHENG Xin;CHEN Wenwei;TANG Zhiqiang;WANG Xuefeng;LIN Yapei(GuangzhouPower Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangzhou 510620,China;Guangzhou Power Electrical Technology Co.,Ltd.,Guangzhou 510670,China)
出处
《电力科学与技术学报》
CAS
北大核心
2021年第6期56-66,共11页
Journal of Electric Power Science And Technology
基金
国家自然科学基金(51977080)
广东电网有限责任公司科技项目(GZHKJXM20170134)。
关键词
冷热电联供
多类型储能
鲁棒优化配置
Benders分解
combined cooling
heating and power
multi-type energy storages
robust optimal allocation
Benders decomposition
作者简介
通信作者:唐智强(1996-),男,硕士,主要从事电力系统优化运行与控制研究,E-mail:1324558275@qq.com。
