梯级水电站中长期调度发电量和调峰目标的竞争关系研究模型与方法  

Research Model and Method for the Competitive Relationship between Power Generation and Peak Shaving Targets in Long-term Scheduling of Cascade Hydropower Stations

作　　者：魏艳清 柳迪 吴红峰[3] 刘建锋[3] 刘丰 邹小林 WEI Yan-qing;LIU Di;WU Hong-feng;LIU Jian-feng;LIU Feng;ZOU Xiao-lin(Gutianxi Hydropower Plant of Fujian Huadian Furui Energy Development Corporation,Ningde 352200,Fujian Province,China;State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430061,Hubei Province,China;Fujian Provincial Investigation,Design and Research Institute of Water Conservancy and Hydropower Corporation,Fuzhou 350001,Fujian Province,China;Science and Technology Research Institute of State Power Investment Corporation,Nanjing 210023,Jiangsu Province,China)

机构地区：[1]福建华电福瑞能源发展有限公司古田溪水力发电厂,福建宁德352200 [2]武汉大学水资源工程与调度全国重点实验室,湖北武汉430072 [3]福建省水利水电勘测设计研究院有限公司,福建福州350001 [4]国家能源集团科学技术研究院有限公司,江苏南京210023

出　　处：《中国农村水利水电》2025年第4期219-223,共5页China Rural Water and Hydropower

基　　金：国家重点研发计划项目(2022YFC3202804);国家杰出青年科学基金项目(52225901)。

摘　　要：随着我国持续推动能源绿色低碳转型,电网调峰是新能源大规模高比例发展的关键支撑。此时,梯级水电站中长期调度目标从发电量最大逐步向调峰转变,以缓解剩余负荷不稳定、火电机组频繁启停等问题。然而,中长期调度中发电量和调峰目标之间的竞争协同关系尚不清晰。为此,对比了以剩余负荷均方差最小为目标的调峰模型和以发电量最大为目标的电量模型,在福建省古田溪梯级水电站开展实例研究,结果表明:①调峰目标和发电量最大目标存在竞争关系,调峰模型可以在提高余荷均方差平稳性的同时,对发电量的减损较少,其相比电量模型更具优势;②入库流量与均方差和发电量间斜率成反比,入库流量越大则斜率越大,即调峰模型的优势变得更加显著。研究可为梯级水电站中长期调度模型的目标函数选取提供参考,从而进一步提升梯级水电站调峰能力。As China continues to promote the green and low-carbon transformation of energy,grid peak shaving plays a crucial role in supporting the large-scale and high-proportion development of new energy sources.At present,the medium-and long-term scheduling objective of cascade hydropower stations is gradually shifting from maximizing power generation towards peak shaving,aiming to alleviate issues such as unstable residual loads and frequent start-ups of thermal power units.However,the competitive and synergistic relationship between power generation and peak shaving objectives in medium-and long-term scheduling is not yet clear.To address this,this study compares a peak shaving model with the objective of minimizing mean square error of residual load and a power generation model with the objective of maximizing power generation.An empirical study is conducted at the Gutianxi Cascade Hydropower Station in Fujian Province.The results indicate that:①There is a competitive relationship between peak shaving and the maximum power generation objectives.The peak shaving model shows more advantages as it can improve the stability of the mean square error of residual load while minimizing the loss of power generation compared to the power generation model;②The relationship between inflow and the mean square error as well as power generation is inversely proportional.The larger the inflow,the steeper the slope,indicating a more significant advantage for the peak shaving model.This research provides a reference for selecting objective functions for medium-and long-term scheduling models of cascade hydropower stations,thereby further enhancing their peak shaving capabilities.

关 键 词：梯级水电站 中长期调度 剩余负荷 调峰 最大发电量 

分 类 号：TV752[水利工程—水利水电工程]