水电站中长期多尺度调峰能力计算方法研究  

Study on calculation methods of medium-and long-term multiscale peaking shaving capacity of hydropower stations

作　　者：艾学山[1,2] 黄馗 石轩语 赵龙庆 刘丰硕 于洋馨 Xueshan;HUANG Kui;SHI Xuanyu;ZHAO Longqing;LIU Fengshuo;YU Yangxin(State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,China;Hubei Key Laboratory of Water System Science for Sponge City Construction,Wuhan University,Wuhan 430072,China;Guangxi Electric Power Dispatching and Control Center,Nanning 530023,China)

机构地区：[1]武汉大学水资源工程与调度全国重点实验室,武汉430072 [2]海绵城市建设水系统科学湖北省重点实验室(武汉大学),武汉430072 [3]广西电网电力调度控制中心,南宁530023

出　　处：《水力发电学报》2024年第11期59-70,共12页Journal of Hydroelectric Engineering

基　　金：广西电网公司科技项目资助(046000KK52220009);湖北省自然科学基金创新发展联合基金项目(2022CFD169)。

摘　　要：调峰能力是衡量水电站调峰性能的重要特性指标。对含风光等新能源的区域电网,开展水电站的中长期调峰能力研究对提高新能源消纳、促进电网长期稳定运行具有重要意义。以多时间尺度对应的历史典型日负荷过程为基础,利用快速搜索与发现的密度峰值聚类算法提取各尺度下的典型日负荷比例,进而确定日调峰电量的计算方法,作为确定各尺度调峰能力的依据。以调峰电量最大为目标建立相应计算期和时间尺度的调度模型,开展年内月尺度、月内旬尺度和旬内日尺度的逐层优化调度研究。以具有年调节能力的龙滩水电站为研究对象开展实例研究表明,本方法可为区域电网开展中长期电力电量平衡,合理安排梯级水电站各时间尺度的调峰电量提供决策参考。Peak load balancing ability is a key characteristic index to measure the performance of a hydropower station.To operate a regional power grid with new energy sources such as wind and solar power,a task of great significance is to conduct studies on the medium-and long-term peak load shaving capacity of the hydropower stations,so as to improve its new energy absorption and long-term stable operation.This paper presents a calculation method of daily peak load-a basis for determining the peak load shaving capacity on each scale-that is based on the historical typical daily load process corresponding to multiple time scales,and extracts the typical daily load proportion on each scale using the clustering by fast search and find of density peak(CFSFDP)algorithm.We develop a scheduling model of the corresponding calculation periods and time scales with the target of maximized peak power load,and examine the optimization scheduling on different scales-annual monthly scale,monthly ten-day scale,and intra-ten day scale.Application in a case study of the Longtan hydropower station with an annual regulation capacity shows that this method helps the decision-making for regional power grids to carry out medium-and long-term power balance,and it is an effective tool to schedule the peak power load of cascade hydropower stations on various time scales.

关 键 词：调峰能力 调峰调度 典型日负荷比例 逐层优化 龙滩水电站 

分 类 号：TV697.1[水利工程—水利水电工程]