摘要
为支撑高比例新能源电力系统安全高效运行,并保障电力系统柔性灵活调节,需同步发展大规模的抽水蓄能。为科学准确地量化分析有、无新能源影响下的抽水蓄能容量效益,首先,提出了一种抽水蓄能容量效益概念;其次,统筹分析了不同场景下新能源装机占比及出力特性对抽水蓄能容量效益结果。为了考虑新能源不确定性对容量效益的影响,进一步按照95%时刻满足电力供应需求确定考虑新能源电力支撑能力的火电开机需求、抽水蓄能容量效益;最后,结合某地区规划情况,对比分析不同时长储能时长对应的抽水蓄能容量效益。研究结果表明,该方法可科学地指导未来中长期抽水蓄能需求规模建设与优化运行策略。
To support the safe and efficient operation,flexible and adaptive regulation capabilities of a high proportion of new energy power systems,it is necessary to simultaneously develop large-scale pumped storage energy.To scientifically and accurately quantify the benefits of pumped storage capacity with and without the influence of new energy,a concept of pumped storage capacity benefits is proposed;Sec-ondly,a comprehensive analysis is conducted on the impact of the proportion of new energy in-stalled capacity and output characteristics on the efficiency of pumped storage capacity in different scenarios.In order to consider the impact of uncertainty in new energy on capacity efficiency.Further determine the thermal power start-up demand and pumped storage capacity benefits considering the new energy power support capacity based on meeting the power supply demand at 95%of the time;Finally,based on the planning situation of a certain re-gion,compare and analyze the pumped storage capacity benefits corresponding different energy storage time.The research results indicate that this method can scientifically guide the construction and opti-mization of operation strategies for the scale of future pumped storage de-mand in the medium to long term.
作者
方绍凤
唐宇
周野
李静
李娟
FANG Shaofeng;TANG Yu;ZHOU Ye;LI Jing;LI Juan(Hunan Electric Power Design Institute Co.,Ltd.,China Energy Engineering Group,Changsha 410007,China)
出处
《电力需求侧管理》
2024年第6期44-48,共5页
Power Demand Side Management
基金
国网湖南省电力有限公司经济技术研究院管理咨询项目(SGHNJYOOGHWT2210030)。
关键词
抽水蓄能
容量效益
火电替代率
柔性灵活调节
新能源占比
pumped storage energy
capacity efficiency
thermal power substitution rate
flexible and adaptive regulation
proportion of new energy
