Frequency-constrained Unit Commitment Considering Typhoon-induced Wind Farm Cutoff and Grid Islanding Events  

作　　者：Yanqi Liu Dunjian Xie Hongcai Zhang 

机构地区：[1]State Key Laboratory of Internet of Things for Smart City and Department of Electrical and Computer Engineering,University of Macao,Macao,China [2]Institute of Catastrophe Risk Management,Nanyang Technological University,Singapore

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第6期1760-1772,共13页现代电力系统与清洁能源学报(英文)

基　　金：This paper was supported by the Science and Technology Development Fund,MacauSAR(No.001/2024/SKL).

摘　　要：In coastal regions of China,offshore wind farm ex-pansion has spurred extensive research to reduce operational costs in power systems with high penetration of wind power.However,frequent extreme weather conditions such as typhoons pose substantial challenges to system stability and security.Pre-vious research has intensively examined the steady-state opera-tions arising from typhoon-induced faults,with a limited em-phasis on the transient frequency dynamics inherent to such faults.To address this challenge,this paper proposes a frequen-cy-constrained unit commitment model that can promote ener-gy utilization and improve resilience.The proposed model ana-lyzes uncertainties stemming from transmission line failures and offshore wind generation through typhoon simulations.Two types of power disturbances resulting from typhoon-in-duced wind farm cutoff and grid islanding events are revealed.In addition,new frequency constraints are defined considering the changes in the topology of the power system.Further,the complex frequency nadir constraints are incorporated into a two-stage stochastic unit commitment model using the piece-wise linearization.Finally,the proposed model is verified by nu-merical experiments,and the results demonstrate that the pro-posed model can effectively enhance system resilience under ty-phoons and improve frequency dynamic characteristics following fault disturbances.

关 键 词：Frequency constraint offshore wind farm TYPHOON uncertainty unit commitment 

分 类 号：G63[文化科学—教育学]