摘要
区域综合能源系统作为能源互联网的重要物理载体,对提高区域综合能效、保障用能安全以及实现可再生能源大幅消纳具有重要意义。该文建立一种考虑管网选型与分期规划的区域综合能源系统最优配置模型。首先,以项目周期为优化时间尺度,计及各类设备的寿命差异,对连续和离散设备以及热电管网的选型与替换约束分别进行建模;然后,基于线性化技术与凸优化理论,推导建立含节点电压、支路潮流以及有/无功损耗的线性潮流模型,并引入热网运行约束,形成以节点为单元的冷热电能量平衡方程;最后,考虑通货膨胀、名义利率等因素的影响,构建以经济性最优为目标计及投资成本、运行成本以及残值收入的目标函数。采用混合整数线性规划技术对该文模型进行求解。4种场景的结果对比表明,考虑设备替换的分期规划相比单阶段规划能够更合理地配置设备的投运与退出计划,确保方案的整体最优性。同时,将多个能源系统协同规划、联合运行,不仅可以减少冗余设备的安装容量,提高设备利用率,而且能够为区域用能安全以及综合能效提升提供重要支撑。
As an important physical carrier of Energy Internet, the regional integrated energy system is of great significance for improving comprehensive energy efficiency,ensuring energy consumption security and absorbing renewable resources in a high proportion. In this paper, an optimal allocation model of regional integrated energy system was established, which takes into account the selection of thermoelectric pipe and staged planning. First, taking the project cycle as the optimization time scale, the selection and replacement constraints of continuous and discrete equipment as well as thermoelectric pipe networks were modeled. Then,based on the linearization technology and convex optimization theory, a linear power flow model with node voltage and branch power flow loss was derived, and the thermal network operation constraints were also introduced. Finally, the energy balance equation of cold, heat and electricity with nodes as the unit was formed. In addition, this paper considered the impact of inflation and interest rate, and constructs an objective function that takes investment cost, operating cost, and residual value income into consideration, in order to acheive economic optimization. The mixed integer programming technique was used to solve the model. The results of the four cases show that,compared with the single-stage planning, the staged planning considering the equipment replacement can allocate the equipment commissioning and exit the plan more reasonably,ensuring the overall optimization of the scheme. Moreover, the coordinated planning and joint operation of multiple energy systems can not only reduce capacity of redundant equipment and improve the utilization rate of equipment, but also provide important support for safe regional energy use and energy efficiency improvement.
作者
邹磊
汪超群
杜先波
唐一铭
吴正勇
方超
ZOU Lei;WANG Chaoqun;DU Xianbo;TANG Yiming;WU Zhengyong;FANG Chao(Jiangsu Frontier Electric Technology Co.,Ltd.,Nanjing 211102,Jiangsu Province,China;College of Electrical Engineering,Zhejiang University,Hangzhou 310007,Zhejiang Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第11期3765-3780,共16页
Proceedings of the CSEE
关键词
区域综合能源系统
优化配置
热电管网
线性潮流
设备替换
分期规划
regional integrated energy system
optimal design
thermoelectric pipe network
linear power flow
equipment replacement
staged planning
