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A solution to the unit commitment problem a review

Frontiers in Energy 2013年第2期7卷 223-236页

作者： B. SARAVANAN Siddharth DAS Surbhi SIKRI D. P. KOTHARI School of Electrical Engineering VIT University Vellore 632014 TamilNadu India Raisoni Group of Institutions Nagpur 400016 India

Unit commitment （UC） is an optimization problem used to determine the operation schedule of the generating units at every hour interval with varying loads under different constraints and environments. Many algorithms have been invented in the past five decades for optimization of the UC problem, but still researchers are working in this field to find new hybrid algorithms to make the problem more realistic. The importance of UC is increasing with the constantly varying demands. There- fore, there is an urgent need in the power sector to keep track of the latest methodologies to further optimize the working criterions of the generating units. This paper focuses on providing a clear review of the latest techniques employed in optimizing UC problems for both stochastic and deterministic loads, which has been acquired from many peer reviewed published papers. It has been divided into many sections which include various constraints based on profit, security, emission and time. It emphasizes not only on deregulated and regulated environments but also on renewable energy and distributed generating systems. In terms of contributions, the detailed analysis of all the UC algorithms has been discussed for the benefit of new researchers interested in working in this field.

关键词： unit commitment (UC) optimization deter-ministic load stochastic load evolutionary programming(EP) hybrid

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Review:Recent Developments in Dynamic load Identification for Aerospace Vehicles Considering Multi⁃source Uncertainties

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第2期38卷 271-287页

作者： WANG Lei LIU Yaru XU Hanying School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083P.R.China Ningbo Institute of Technology Beihang UniversityNingbo 315100P.R.China

The determination of the dynamic load is one of the indispensable technologies for structure design and health monitoring for aerospace ***,it is a significant challenge to measure the external excitation *** contrast,the technique of dynamic load identification based on the dynamic model and the response information is a feasible access to obtain the dynamic load ***,there are multi-source uncertainties which cannot be neglected for complex systems in the load identification process,especially for aerospace *** this paper,recent developments in the dynamic load identification field for aerospace vehicles considering multi-source uncertainties are reviewed,including the deterministic dynamic load identification and uncertain dynamic load *** inversion methods with different principles of concentrated and distributed loads,and the quantification and propagation analysis for multi-source uncertainties are ***,several possibilities remaining to be explored are illustrated in brief.

关键词： dynamic load identification concentrated dynamic load distributed dynamic load stochastic load probabilistic uncertainties non-probabilistic uncertainties

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