摘要
光伏小镇能源系统是以光伏为主体,结合其他本地能源的综合能源系统。为充分利用太阳能和地热能,文中提出一种考虑源荷不确定性的两阶段鲁棒优化方法,引入不确定性调节参数以避免为保证供电可靠性而牺牲经济效益。建立以系统综合成本最小为目标的max-min-max两阶段鲁棒优化配置模型,对光伏小镇的光伏、热电联产机组、地源热泵、储能进行优化配置。光伏和负荷的不确定性采用不依赖于概率分布的盒式不确定集描述,以上下边界区间表示光伏和负荷的波动范围,形成鲁棒约束,通过列和约束生成算法以及强对偶转换降低求解的复杂度。以我国北方某光伏小镇为研究案例,通过改变不确定性调节参数,有效控制配置方案的保守性,在保证供电可靠性、降低负荷缺电率的同时,降低配置成本、改善弃光率,该方案具有很强的适用性。
The energy system of solar town is a comprehensive energy system with the photovoltaic as the main body,combined with other local energy sources.To fully utilize the solar energy and geothermal energy in such system,a two-stage robust optimization method considering uncertainties of both energy supply and demand is proposed.Uncertainty adjustment parameters are introduced to avoid sacrificing economic efficiency in order to ensure power supply reliability.A max-min-max two-stage robust optimization configuration model is established with the objective of minimizing the overall system cost.The optimization includes the allocation of photovoltaics,combined heat and power,ground source heat pumps and storage in the integrated energy system of the solar town.The uncertainty of photovoltaic and load data is described by a box-type uncertainty set independent of probability distribution.The upper and lower boundary interval as robust constraints represents the fluctuation range of photovoltaic and load.The column and constraint generation algorithm and strong duality transformation are employed to reduce the complexity level of solving the problem.A case study is conducted on a solar town located in northern China.By adjusting the uncertainty adjustment parameters,the conservatism of the configuration plan can be effectively controlled.The scheme has strong applicability,mainly embodied in not only ensuring the reliability of power supply,reducing the load power loss rate,but also reducing the configuration cost and improving the light rejection rate.
作者
孙天贺
靳双源
刘国斌
胡亚青
曲永强
SUN Tianhe;JIN Shuangyuan;LIU Guobin;HU Yaqing;QU Yongqiang(School of Electric Power,Shenyang Institute of Engineering,Shenyang 110136,China;State Grid Fushun Power Supply Company of Liaoning Electric Power Co.,Ltd.,Fushun 113000,China)
出处
《电力工程技术》
北大核心
2023年第6期42-51,共10页
Electric Power Engineering Technology
基金
国家电网有限公司科技项目(2022YF-20)。
关键词
光伏小镇
综合能源系统
鲁棒优化
不确定性
容量配置
列和约束生成算法
solar town
integrated energy system
robust optimization
uncertainties
capacity configuration
column and constraint generation algorithm
