摘要
至2010年底,美国的风电装机容量仅次于中国,居世界第二。考虑政府的支持政策和可观的风资源储量,有专家预见,未来美国40%的电能可来自于风力发电。在详细分析大规模风电接入对美国电力系统运行产生的影响的基础上,文中提出了需应对的几个方面的挑战。分析结果显示,最关键的挑战来自于风电功率的波动特性,可将其转化为系统负荷减去风电出力后的净负荷波动特性。随后文章提出了已被实际应用或正在工程示范的几种电网级储能方式来平抑风电接入给电网带来的负面影响。文中也对电网级储能方式对传统发电厂利用因子的影响加以讨论。
At the end of 2010,the United States had the second highest installed wind power capacity in the world after China.With supportive policies and considerable wind resources,some have predicted that the United States could supply 40% of its electric energy from wind in the foreseeable future.This paper presents challenges of large-scale wind power penetration,focusing on its operating impacts on power systems in the context of the United States.It demonstrates that key challenges come from variability in wind power output,which translates into variability in the net load（load minus wind generation）.The paper then presents various grid-scale storage options that are already in practice or in demonstration to mitigate the adverse impacts of wind power on the electric power grid.The impact of grid-scale storage on the power plants＇ utilization factors is also discussed.
出处
《电力系统自动化》
EI
CSCD
北大核心
2011年第22期3-11,共9页
Automation of Electric Power Systems
关键词
风力发电
大规模风电接入
负荷持续曲线
基荷发电厂
电网级储能方式
wind power
large-scale wind power penetration
load duration curve
base-load power plants
grid-scale storage
