计及运行灵活性的中压配电系统源-网-储协同扩展规划
Collaborative Expansion Planning of Source-Grid-Storage in Medium Voltage Distribution System Considering Operational Flexibility
徐峰亮 1王克谦 1王文豪 2王鹏 1王焕昌 3张帅 3赵凤展3
作者信息
- 1. 国网河南省电力公司信阳供电公司,河南信阳 464000
- 2. 国网河南省电力公司经济技术研究院,河南郑州 450000
- 3. 中国农业大学信息与电气工程学院,北京 100083
- 折叠
摘要
为适应新型配电系统中分布式电源(DG)与负荷的双重波动性,需要对源、网、储进行协同配置以满足系统运行灵活性需求.为表征配电系统运行灵活性水平,从灵活性供需平衡、净负荷曲线平滑度和线路传输均衡性 3 个方面提出了净负荷适应率指标、净负荷波动率指标和线路负载裕度均衡性指标,并建立了考虑这些指标的配电系统源-网-储 3 层扩展规划模型.其中,上层和中层以年综合成本最小为目标对配电线路、DG和储能进行优化规划;下层以运行灵活性水平最高为目标进行运行优化.采用复合聚类算法生成配电系统典型规划场景,并以改进后的粒子群算法和非支配遗传算法双层嵌套的形式求解 3 层扩展规划模型.最后,基于改进的IEEE 33 节点系统验证了所提规划模型的有效性和优越性.
Abstract
To adapt to the dual volatility of distributed generation(DG)and load in the new distribution system,it is necessary to coordinate the source-grid-storage allocation to meet the needs of system operational flexibility.To characterize the operational flexibility level of the distribution system,three indexes including the net load adaptability index,net load fluctuation index and line load margin balance index are proposed from three aspects including flexible supply and demand balance,net load curve smoothness and line transmission balance,and a distribution system source-grid-storage three-layer expansion planning model is established with consideration of above indexes.The upper and middle layers are optimized in distribution lines,DG and energy storage to minimize the annual comprehensive costs,and the lower layer is optimized in operation to maximize the operational flexibility.The composite clustering algorithm is used to generate the typical planning scenarios of the distribution system,and the three-layer extended planning model is solved with the improved particle swarm algorithm and non-dominated genetic algorithm in the bi-level nested form.Finally,the effectiveness and superiority of the proposed planning model are verified based on the improved IEEE33 node system.
关键词
配电系统扩展规划/运行灵活性/分布式电源/储能系统/源网储协同规划Key words
distribution system expansion planning/operational flexibility/distributed generation/energy storage system/source-grid-storage coordination planning引用本文复制引用
基金项目
国家电网有限公司科技项目(521770220001)
出版年
2024
国家科技期刊平台
NSTL
万方数据