基于三段洪水特征的调洪增发电量计算方法  

Calculation method of power generation increase on flood dispatching based on three-period flood characteristics

作　　者：钟儒鸿 廖胜利[1] 李树山[2] 程春田[1] 燕志宇 ZHONG Ruhong;LIAO Shengli;LI Shushan;CHENG Chuntian;YAN Zhiyu(Institute of Hydropower and Hydroinformatics,Dalian University of Technology,Dalian 116024,China;Electric Power Dispatching and Control Center of China Southern Power Grid,Guangzhou 510523,China)

机构地区：[1]大连理工大学水电与水信息研究所,辽宁大连116024 [2]中国南方电网电力调度控制中心,广东广州510523

出　　处：《电力自动化设备》2021年第3期204-210,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51979023,U1765103);辽宁省自然科学基金资助项目(20180550354)。

摘　　要：充分应用水电站的调蓄特点可以合理利用洪水增加发电效益,但没有统一有效的洪水增发效益评价方法,为此,根据洪水涨落过程特点,提出一种基于三段洪水特征的调洪增发电量(PGIOFD)的概念与计算方法。根据水位及流量的涨落特征将场次洪水过程划分为涨水段、洪峰段和退水段3个阶段;分别按水位不变、按预想出力、按均匀降库容3种规则对三阶段进行发电计算,以确定无优化措施下的基准过程及发电量;将该电量与实际调度电量进行比较得到调洪增发电量。以乌江流域大花水电站2008—2018年的29场洪水为例,结果显示其中充分利用洪水资源的有26场,累计PGIOFD为128.38 GW·h,验证了该方法可以有效地应用于洪水过程分析和洪水调度评价。It can reasonably use flood to increase power generation benefit by fully applying the characteristics of reservoir regulation of hydropower station,but there is no uniform and effective assessment method for additional power generation benefit of flood,for which,according to the characteristics of flood ebbing and flowing process,the concept and calculation method of PGIOFD(Power Generation Increase On Flood Dispatching)are proposed based on three-period flood characteristics.According to the ebbing and flowing characteristic of water level and flow,a flood process is partitioned into three periods of water level rising period,flood peak period and water level falling period.The power generation of three periods are calculated according to three rules of constant water level,expected output and uniform storage capacity reduction,and the benchmark process and power generation without optimization measures are determined.The power generation is compared with practical dispatching power generation to get the PGIOFD.Taking 29 floods of Dahuashui power station in Wujiang River from 2008 to 2018 as examples,and results show that resources of 26 floods are fully used with the cumulative PGIOFD of 128.38 GW·h,which verifies that the proposed method can be effectively applied to flood process analysis and flood dispatching evaluation.

关 键 词：洪水资源利用 发电效益评价 调洪增发电量 洪水划分 调度规则 

分 类 号：TM73[电气工程—电力系统及自动化]