赵鉴,袁渤巽,刘又榕,王维,林顺富





摘 要: 典型负荷场景对多能互补微网系统规划有着十分重要的意义。针对传统的历史典型日负荷曲线数据过于保守的问题,提出一种利用DeST软件结合k-means聚类算法得到典型日负荷曲线的方法。首先对区域内各建筑体进行建模;其次通过DeST中的DeST-h求得该模型的全年负荷需求数据;最后使用k-means聚类算法对场景进行提取,得到典型的日负荷曲线。基于某规划区实际场景数据,利用所提出方法提取典型的负荷场景曲线,验证了该方法的可行性。
关键词: 多能源互补微网; DeST; k-means聚类算法; 典型日负荷曲线
中图分类号:TM769 文献标识码:A 文章编号:1006-8228(2022)06-40-03
Method for extracting typical daily load curve of multi-energy
complementary microgrid system
Zhao Jian1, Yuan Boxun1, Liu Yourong2, Wang Wei2, Lin Shunfu2
(1. China Shanghai Architectural Design and Research Institute Co.Itd, Shanghai 200062, China;
2. School of Electric Power Engineering, Shanghai University of Electric Power)
Abstract: Typical load scenarios are very important for the planning of multi-energy complementary microgrid systems. Aiming at the problem that the traditional historical typical daily load curve data is too conservative, a method of using DeST software and k-means clustering algorithm to obtain the typical daily load curve is proposed. Firstly, the multi-source equipments in the region are modeled, then the annual load demand data of the model is obtained through DeST-h in DeST, and finally the typical daily load curve is obtained by using the k-means clustering algorithm to extract the scene. Based on the actual scene data of a certain planning area, the proposed method is used to extract the typical load scene curve, which verifies the feasibility of the method.
Key words: MECE(multi-energy complementary microgrid); DeST; k-means clustering; typical daily load curve
0 引言
多能源互補微网(multi-energy complementary microgrid,MECM)可以耦合多种新能源,充分发挥不同可再生能源的各种优点,平抑风、光等可再生能源的不确定性,提高可再生能源的消纳能力[1]。目前关于MECM的研究热电主要有系统建模、规划配置和经济效益评估等[2],其中在规划配置研究中考虑负荷的不确定性,提取典型性的负荷场景具有十分重要的意义。典型负荷场景曲线主要有三种提取方法,分别为:最接近某月平均负荷率的日负荷曲线、某月日负荷最大的日负荷曲线和某特定工作日的日负荷曲线。文献[3-4]采用日负荷率与峰谷差率作为指标,根据负荷曲线变化规律对负荷场景进行提取。文献[5]针对典型日负荷曲线预测方法误差较大的问题,提出分形插值算法和粒子群算法相结合提高负荷预测的精确性,但需要规划地区多年负荷精确数据和复杂的计算。……