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Vibration control of the finite L-shaped beam structures based on the active and reactive power flow

Science China(Physics,Mechanics & Astronomy) 2011年第2期54卷 310-319页

作者： LIU ChunChuan LI FengMing TANG Liang HUANG WenHu P. O. Box 137. School of Astromantics Harbin Institute of Technology Harbin 150001. China P. O. Box 2729 National Laboratory of Space Intelligent Control. Beijing Institute of Control Engineering Beijing 100190. China

This paper analyzes the physical meaning of the active and reactive power flow in the finite L-shaped beams and studies the active vibration control of the structures based on the active and reactive power *** traveling wave approach is used to calculate the structural dynamic *** the error of control force is inevitable in practical applications,the effects of the error of control force on the control results are *** study indicates that the error of control force has pronounced influence on the control results of the acceleration and reactive power *** is obvious that the reactive power flow can represent the vibration strength component of the complex intensity,and the active power flow strongly depends on the structural damping of the finite beams.

关键词： finite L-shaped beam active power flow reactive power flow active vibration control traveling wave method

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Intelligent Assessment of Active and reactivepower flow with Satisfying Accuracy forN-k_(1)-k_(2) Cascading Outages

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Journal of Modern power Systems and Clean Energy 2021年第5期9卷 986-999页

作者： Yusheng Xue Yun Liu NARI Group Corporation(State Grid Electric power Research Institute) NanjingChina School of Electrical Engineering Shandong UniversityJinanChina

Addressed to the N-k_(1)-k_(2) cascading outages,it is computationally burdensome for the reliable calculation of active and reactive power *** paper builds a comprehensive framework with three algorithms,including the distribution factor(DF),the Newton-Raphson(NR),and the first iteration of NR algorithm(termed as 1J).Classifiers are designed to determine whether the NR algorithm should be employed for *** features are extracted upon the analytical error of *** reactive power is partially considered in the 1J but neglected in the DF algorithm,the deviation between the solutions is taken as one crucial *** support vector machine(SVM)is then utilized for classifier *** the deep integration of the causal inference and the statistical paradigm,this framework calculates active and reactive power flows rapidly,reliably,and *** effectiveness and robustness are fully validated in three typical IEEE systems.

关键词： Active power flow algorithm coordination causal algorithm integration of research paradigms N-k_(1)-k_(2)cascading outage reactive power flow

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The wave and vibratory power transmission in a finite L-shaped Mindlin plate with two simply supported opposite edges

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Acta Mechanica Sinica 2011年第5期27卷 785-795页

作者： Chun-Chuan Liu Feng-Ming Li Ting-Wei Liang Wen-Hu Huang P. O. Box 137 School of AstronauticsHarbin Institute of Technology150001 Harbin China

In this paper,wave and vibratory power transmission in a finite L-shaped Mindlin plate with two simply supported opposite edges are investigated using the wave *** dynamic responses,active and reactive power flow in the finite plate are calculated by the Mindlin plate theory （MPT） and classic plate theory （CPT）.To satisfy the boundary conditions and continuous conditions at the coupled junction of the finite L-shaped plate,the near-field and far-field waves are entirely contained in the wave *** in-plane longitudinal and shear waves are also *** results indicate that the vibratory power flow based on the MPT is different from that based on the CPT not only at high frequencies but also at low and medium *** influence of the plate thickness on the vibrational power flow is *** the results it is seen that the shear and rotary inertia correction of the MPT can influence the active and reactive power at the junction of the L-shaped plate not only at high frequencies but also at low and medium ***,the effects of structural damping on the active and reactive power flow at the junction are also analyzed.

关键词： Finite L-shaped Mindlin plate Active power flow reactive power flow Wave approach

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