典型文献
Online Frequency Security Assessment Based on Analytical Model Considering Limiting Modules
文献摘要：
Due to the increasing implementation of high volt-age direct current(HVDC)and the integration of renewable resources,frequency stability problems in power systems are drawing greater attention in recent years.It has become nec-essary to carry out online frequency security assessments to ensure the safe operation of power systems.Considering the low time-efficiency of simulation-based methods,analytical models,such as the frequency nadir prediction(FNP)model,are more suitable for online assessment,which requires calculating the worst frequency deviation under various contingencies.Based on the FNP model,the FNP-L model for online frequency security assessment is proposed in this paper.The proposed model implements security assessment by calculating and checking the frequency features,including the nadir time and frequency,followed by contingencies.The effect of the governor,including nonlinear constraints,is approximated into polynomial functions so that the results are obtained by solving multiple polynomial equations.Case studies are carried out using the New-England 39-bus system and a regional power grid,which shows that the proposed model could achieve both high speed and high accuracy,and can therefore be applied in online security assessment.
文献关键词：
中图分类号：
作者姓名：
Yuqian Zhang;Qinglai Guo;Yanzhen Zhou;Hongbin Sun
作者机构：
State Key Laboratory of Power Systems,Department of Electrical Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Yuqian Zhang;Qinglai Guo;Yanzhen Zhou;Hongbin Sun-.Online Frequency Security Assessment Based on Analytical Model Considering Limiting Modules)[J].中国电机工程学会电力与能源系统学报（英文版）,2022(05):1363-1372
A类：
contingencies
B类：
Online,Frequency,Security,Assessment,Based,Analytical,Model,Considering,Limiting,Modules,Due,increasing,implementation,high,volt,age,direct,current,HVDC,integration,renewable,resources,frequency,stability,problems,power,systems,are,drawing,greater,attention,recent,years,It,has,become,nec,essary,carry,out,security,assessments,ensure,safe,operation,efficiency,simulation,methods,analytical,models,such,nadir,prediction,FNP,more,suitable,which,requires,calculating,worst,deviation,under,various,proposed,this,paper,implements,by,checking,features,including,followed,effect,governor,nonlinear,constraints,approximated,into,polynomial,functions,that,results,obtained,solving,multiple,equations,Case,studies,carried,using,New,England,bus,regional,grid,shows,could,achieve,both,speed,accuracy,can,therefore,applied
AB值：
0.608009
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