基于备用流量的水风光多能互补优化调度  

Optimization Scheduling of Hydro-Wind-Solar ComplementarySystems Based on Standby Flow

作　　者：方国华[1] 刘畅[1] 丁紫玉 FANG Guo-hua;LIU Chang;DING Zi-yu(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学水利水电学院,南京210098

出　　处：《长江科学院院报》2025年第4期36-44,共9页Journal of Changjiang River Scientific Research Institute

基　　金：国家重点研发计划项目(2019YFE0105200);江苏省卓越博士后计划项目(2022ZB157);中国博士后科学基金项目(2022M720996)。

摘　　要：随着大规模风光电站接入,风光能源出力预测精度不足影响了电网的安全稳定运行。为解决此类问题,提出基于备用流量的水风光多能互补系统优化调度方法。首先,根据水电站的可用水量按比例设置备用流量,然后以发电量最大和余留负荷方差最小为目标建立基于备用流量的水风光多能互补优化调度模型,利用备用流量应对风光高发和低发的影响,最后对雅砻江下游梯级水电站及接入的风光电站进行实例研究。结果表明:相对于不设置备用流量,设置了备用流量的多能互补系统在典型丰水月(6月份)和典型枯水月(12月份)的发电量分别增加0.08%和1.97%,而余留负荷方差下降均超过40%;设置备用流量能够在保证发电效益的基础上减轻电力系统的供需平衡压力,保障电力系统安全稳定运行。该调度方法的有效性和实用性得到了验证,可供类似水电站参考。With the access of large-scale wind power stations and solar power stations,wind energy and solar energy affect the safe and stable operation of the power system due to the lack of prediction accuracy.This paper presents an optimal scheduling method for the hydro-wind-solar complementary system based on standby flow.First,the standby flow is set according to the available water of each hydropower station based on the inflow.Then,the optimal scheduling model based on standby flow is developed.The objectives of this model are to maximize power generation and minimize the variance of residual load.Standby flow serves to mitigate the impact of inaccurate wind and solar energy predictions.Finally,a case study is conducted on the cascade hydropower station and connected wind and solar power stations along the lower Yalong River.Results show that compared with the scenario without standby flow,the power generation efficiency of the multi-energy complementary system with standby flow in typical wet month(June)and typical dry month(December)increases by 0.08%and 1.97%,respectively;and the variance of residual load decreases by more than 40%.In conclusion,setting standby flow can balance the power supply and demand of the power system while ensuring power generation efficiency,thereby guaranteeing the safe and stable operation of the power system.

关 键 词：风光能源 备用流量 多能互补系统 优化调度 梯级水电站 

分 类 号：TV213[水利工程—水文学及水资源]