摘要
为改善电-气互联综合能源系统中风电出力不确定性和多能传输差异对调控过程的影响,提出了基于改进小波融合算法的混合尺度调控方法.首先采用区间数学的方法,对系统中风电功率不确定性进行表示并给出风电处理策略.其次,考虑到不同能源传输特性的差异,提出了改进的小波融合算法,即先对电力网络中传感器信号数据进行多个不同小波基的多尺度分解,再对天然气系统信号数据中使用相同小波基分解的信号在混合尺度上实施加权数据融合,进行不同小波基的逆变换后得到融合信号.最后基于所搭建仿真模型,对比分析了不同调控方法的调控效果.结果表明本文所提方法的调控结果优于DMPC(分布式模型预测控制)滚动优化调控结果,且在改善了系统运行经济性的同时也提高了系统稳定性.
To improve the impact of wind power output uncertainty and multi-energy transmission differences on the regulation process in integrated natural gas and electric power systems,a hybrid scale regulation method based on an improved wavelet fusion algorithm is proposed.Firstly,an interval mathematical approach is used to represent the wind power uncertainty in the system and give the wind power treatment strategy.Secondly,considering the differences of different energy transmission characteristics,an improved wavelet fusion algorithm is proposed to first decompose the sensor signal data in the power network with several different wavelet bases at multiple scales,and then implement a weighted data fusion algorithm on the hybrid scale for the signals decomposed using the same wavelet bases in the natural gas system signal data,and obtain the fused signals after the inverse conversion of different wavelet bases.Finally,based on the simulation model built,the modulation effects of different modulation methods are compared and analyzed.The results show that the proposed method outperforms the DMPC rolling optimization regulation and improves the system stability while improving the system operation economy.
作者
谭阳红
惠玲利
杨勃
郭潇潇
罗琼辉
TAN Yanghong;HUI Lingli;YANG Bo;GUO Xiaoxiao;LUO Qionghui(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2024年第2期22-32,共11页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51637004)。
关键词
综合能源系统
混合尺度调控模型
改进小波融合算法
风电不确定性
Integrated energy system
hybrid scale regulation model
improved wavelet fusion algorithm
wind power uncertainty
作者简介
谭阳红(1971—),女,湖南娄底人,湖南大学教授,博士生导师,博士;通信联系人:惠玲利,E-mail:2657323468@qq.com。
