摘要
重大天气过程期间省级系统负荷的精准预测对于新型电力系统的电力电量平衡至关重要。针对这一问题,提出了一种使用温度等势面图替代多站点温度的方法,将传统温度数据与负荷的关系转变为温度等势面图与负荷的关系,利用深度神经网络的图形识别和时序记忆能力,分析温度等势面图集合与负荷集合的复杂对应关系,构建了能够捕捉温度等势面波动与系统负荷变化规律的通用预测模型。在此基础上,采用迁移学习方法建立了寒潮、高温两类重大天气过程的日前96点系统负荷预测专项模型,分析了这两类重大天气过程的典型温度等势面图特征。基于某省2021年至2023年寒潮、高温期间的历史数据开展算例分析,结果表明负荷预测精度显著提升,验证了所提方法的有效性。
The accurate forecasting of provincial load during major weather process is pivotal to balance the electric power and energy for new electric power system.Aiming at this problem,a method using temperature isosurface diagram instead of multi-station temperature data is proposed.The traditional relationship between temperature data and load is transformed into the relationship between temperature isosurface diagrams and load.Utilizing the graphical recognition and temporal memory abilities of deep neural network,the complex correspondence between temperature isosurface diagram set and load set are analyzed,a general prediction model enabled to capture the law of temperature isosurface fluctuation and system load change is estab⁃lished.Based on this general model,the day-ahead 96-point load forecasting models during cold wave and high-temperature weather are established using transfer learning methods,the typical temperature isosurface characteristics of these two kinds of weather events are analyzed.Based on the history data during cold wave and high-temperature periods in a certain province from 2021 to 2023,the load prediction accuracy is significantly enhanced,which validated the effectiveness of the proposed method.
作者
梁志峰
康重庆
孙大雁
钟海旺
王建平
周海松
杨登宇
LIANG Zhifeng;KANG Chongqing;SUN Dayan;ZHONG Haiwang;WANG Jianping;ZHOU Haisong;YANG Dengyu(Department of Electrical Engineering,Tsinghua University,Beijing 100084,China;State Grid Dispatching Control Centre,State Grid Corporation of China,Beijing 100031,China;Sichuan Energy Internet Research Institute,Tsinghua University,Chengdu 610213,China;State Grid Electric Power Research Institute,NARI Group Corporation,Nanjing 211106,China)
出处
《电力自动化设备》
北大核心
2026年第2期176-184,共9页
Electric Power Automation Equipment
基金
国家电网有限公司科技项目(4000-202355381A-2-3-XG)。
