基于直流外送的水风光大基地最优容量配比研究  

Optimal Capacity Ratio of Hydro-wind-solar Mega-bases Based on DC Transmission

作　　者：王玲 李香华[2] 王军[2] 李青芯 张冲林 WANG Ling;LI Xianghua;WANG Jun;LI Qingxin;ZHANG Chonglin(Shanghai Investigation,Design and Research Institute Co.,Ltd.,Shanghai 200335,China;China Yangtze Power Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]上海勘测设计研究院有限公司,上海200335 [2]中国长江电力股份有限公司,武汉430010

出　　处：《长江技术经济》2024年第2期12-19,共8页Technology and Economy of Changjiang

摘　　要：水风光大基地一体化运行是提高直流外送通道利用率、增加清洁能源电量、降低成本电价的重要方式,其难点在于确定风光水大基地的最优容量配比。首先构建水风光大基地系统模型,然后以投资经济性最优为目标,以风光水出力特性、直流通道输送容量为约束,建立时序生产模拟模型,并采用分支定界法求解模型。以金下界河上的梯级电站为例,通过对比不同水风光配比下的新增电量、提升设备利用率和成本电价,给出兼顾环保性、安全性、经济性的最优配比。研究结果可为水风光大基地电规划与建设提供参考依据。The construction of integrated hydro-wind-solar mega-base is an critical way to improve the utilization rate of DC transmission channel,increase clean energy generation and reduce electricity costs.The key challenge lies in determining the optimal ratios of wind,solar,and water capacities.In this paper we propose a method for simulating the production of wind-solar-fire mega-bases based on a DC outbound transmission channel.By establishing the hydro-wind-solar mega-base model,we devise a time-series production simulation model and solve the model through the branch bounding method.The objective of the model is to optimize investment economics,while the wind-water output characteristics and the DC channel transmission capacity are taken as constraints.With the cascade hydropower stations on the Jinxiajie River as a case study,we compare the increased electricity generation,the improved equipment utilization rate and cost price of electricity under different water and wind ratios.On this basis we identify an optimal ratio that accommodates environmental protection,safety and economy.The results can provide reference for the planning and construction of hydro-wind-solar mega-base.

关 键 词：水风光大基地 直流外送通道 容量优化配比 分支定界法 梯级水电站 

分 类 号：TM73[电气工程—电力系统及自动化]