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- 저자 : Muhammad Hammad Uddin (검색결과 2 건)
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Riaz Uddin,Ali S. Alghamdi,Muhammad Hammad Uddin,Ahmed Bilal Awan,Syed Atif Naseem 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.6
The fault diagnosis and control through fault detection, isolation and supply restoration (FDIR) technique is the part of a commonly used distribution management system application in smart grid. When the fault occurs, it becomes essential to detect and isolate the faulty section of the distribution network at once and then restore back to its running condition through tie switches. The communication between IEDs is done through diferent communication mediums such as Ethernet, wireless, power line communication etc. Therefore, formal analysis of the FDIR mechanism is required with communication network (ideally Ethernet), which helps us to predict the behavior of FDIR response upon the occurrence of fault in terms of various important probabilities, reliability study and efciency (showing the system will work properly). In this regard, for the above said analyses, this article discusses (a) the development of the Markovian model of FDIR for distribution network of smart grid considering Tianjin Electric Power Network as case study with intelligent electronic devices (IEDs) using ideal communication medium (Ethernet); (b) utilized probabilistic model checker (PRISM tool) to predict the probabilities; (c) perform the reliability analyses and (d) study the efciency of FDIR behavior for future grid using logical properties. The detailed analysis and prediction (done for the fault occurrence scenario) mainly focus in determining the (1) the probability of switching failures of FDIR in smart grid; (2) the probability of isolating the defective switch from the system within limited time and (3) the probability of restoring the system automatically within the minimum possible interval.
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Parametric Sensitivity Analyses for Perceived Impedance in Haptic Teleoperation
Riaz Uddin,Muhammad Hammad Saleem,류제하 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.8
In this paper, sensitivity analyses (SA) are performed in order to find the effect of variations of master/slave site dynamics parameters on the perceived impedance in haptic teleoperation in the absence/presence of communication time delays. These analyses are useful in finding the dominant parameter perceived by the human operator during the teleoperation. In this regard, the comprehensive sensitivity analyses are performed for the prominent force reflecting teleoperation architectures such as (i) two-channel (2C) teleoperation architectures mainly (a) position error-based architecture (PE) and (b) direct force reflection architecture (PF), (ii) four-channel architecture (4C) and, (iii) three-channel (3C) architecture (a) OFC architecture and (b) EFC architecture. Several important results and conclusions are presented for sensitivity of perceived impedance in frequency domain using MATLAB/Simulink.
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