电网技术2024，Vol.48Issue(5)：1846-1854,中插4-中插6,12.DOI:10.13335/j.1000-3673.pst.2023.0678
考虑线路负载率指标规划-运行协调一致性的电网规划双层模型
Bi-level Transmission Expansion Planning Model Considering Planning-operation Coordination of Line Load Rate Indices
摘要
Abstract
With the increase in the penetration of renewable energy,the power flow changes have become more complex.As the key link of the long-term power and energy balance,the requirements to the transmission expansion planning(TEP)are also gradually being raised.The TEP usually takes the upper and lower limits of the transmission capacities as the constraints,which may lead to the problem that some transmission lines are always in the heavy load operation,increasing the security risks of the power systems.Therefore,the load rate indices need to be paid attention to in the TEP.Considering that adding constraints of the annual statistical indices to the two-staged model may couple all the scenarios so that the actual operation of the system cannot be effectively reflected,this paper designs the linear forms for the line heavy rate constraints and the improved DC power flow constraints,and establishes a bi-level TEP model.The upper-level is for the planning decision problem that is used to formulate a planning scheme,while the lower-level for an operational simulation problem that is used to verify the planning scheme.Compared with the two-staged model,the operation problems in the bi-level model is able to truly reflect the operation of the system under the planning scheme without being affected by the constraints of the planning level.The case studies verify the effectiveness of adding the heavy load rate constraints in the planning and the rationality of the bi-level model structure.关键词
新能源/电力电量平衡/电网规划/重载率/双层优化Key words
renewable energy/balance of power and energy/transmission expansion planning/heavy load rate/bi-level optimization分类
信息技术与安全科学引用本文复制引用
杨钤,王建学,李旭霞,刘海丞..考虑线路负载率指标规划-运行协调一致性的电网规划双层模型[J].电网技术,2024,48(5):1846-1854,中插4-中插6,12.基金项目
国网山西省电力公司科技项目(520533220004):"助力低碳目标的省级电网和储能联合优化规划理论和方法".Project Supported by Science and Technology Project of State Grid Shanxi Electric Power Company(520533220004):"Theory and Method of Coordinated Provincial Transmission and Energy Storage Expansion Planning Conducive to Low-carbon Targets". （520533220004）
