摘要
为评价风电并网对系统可靠性的影响,考虑了风速的时序性和自相关性,建立了风速的自回归移动平均模型,采用东台风电场实际监测的风速历史数据,并结合机组、线路和变压器等状态模型,建立了基于序贯MonteCarlo仿真方法的风电场发输电可靠性模型,对含风电场的发输电组合系统进行可靠性评估,同时采用了最优切负荷的方法,尽量减小切负荷量,并给出了具体的算法流程。算例采用IEEE-RTS测试系统,利用可靠性指标缺负荷概率LOLP、电量不足期望EENS和电力不足期望LOLE等反映风电并网对系统可靠性的影响。通过对仿真结果的比较和分析,可看出风电机组的接入对提高发输电组合系统的可靠性具有一定的积极作用。
In order to evaluate the effect of grid-connected wind farms on power system reliability,with the considerations of wind speed sequentiality and self-correlation,the Auto-Regressive and Moving Average model of wind speed is built;with the historic wind speed data measured and combined with the state models of generating unit,transmission line and transformer,the reliability model of wind farm generation and transmission is established based on the sequential Monte Carlo simulation;the reliability of composite generation and transmission system with wind farm is assessed;an optimal load shedding model is applied to decrease the shedding load;and the detailed reliability assessment flowchart of power system with wind farms is given.For the IEEE-RTS test system,the effect of grid-connected wind farms on power system reliability is evaluated with the indexes of LOLP（Loss Of Load Probability）,EENS（Energy Expectation of Not Supplied） and LOLE（Loss Of Load Expectation）.The comparative analysis shows that,the connection of wind farms to power system improves obviously the reliability of composite generation and transmission system.
出处
《电力自动化设备》
EI
CSCD
北大核心
2010年第4期5-9,共5页
Electric Power Automation Equipment
基金
国家863专项科研基金项目(2007AA05Z458)~~
