摘要
大规模风电功率波动会引起系统频率波动甚至导致系统频率动态越限,危及电网的安全运行。由于风力发电具有单机容量小、随机波动性强等特点,基于阶跃扰动的传统电力系统频率动态分析方法将不再适用。该文构建含大规模风电电力系统频率动态评估方法,该方法利用t-location概率分布模型描述风电功率随机波动特性、采用序贯蒙特卡洛法模拟时序风电功率序列。最后,以某区域电网为例,仿真分析大规模风电场群联网运行对系统频率的影响。
The balance of power supply and demand will be destroyed by power fluctuation of large-scale grid-connected wind power system and the large-scale fluctuation of wind power can cause the frequency deviating over the limit. The traditional method based on step disturbance is no longer applicable because the capacity of single wind turbine is too small and wind power has strong stochastic fluctuation. In order to research the effect of power fluctuation of wind power system on the frequency of electric power system, the wind power fluctuation characteristics was described by t-location model, and the time series of wind power was simulated by the sequential of Monte Carlo method. Finally the impact of wind power fluctuation on the frequency of electric power system was simulated based on a regional power system.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第4期617-623,共7页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2013CB228201)
国家自然科学基金(51207018)
关键词
大规模风电联网
风电波动
电力系统频率
蒙特卡洛法
large-scale on-grid wind power system
wind power fluctuation
electric power system frequency
Monte Carlo method
