DSpaceCRIS@UNITENThe DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material.http://dspace.uniten.edu.my/jspui2019-07-19T08:45:48Z2019-07-19T08:45:48Z5061FPGA simulation of AD converter by using Giga Hertz speed data acquisition for partial discharge detectionEmillianoChakrabarty, C.K.Basri, A.Ramasamy, A.K.Ping, L.C.http://dspace.uniten.edu.my/jspui/handle/123456789/57272017-12-14T04:15:41Z2010-01-01T00:00:00ZTitle: FPGA simulation of AD converter by using Giga Hertz speed data acquisition for partial discharge detection
Authors: Emilliano; Chakrabarty, C.K.; Basri, A.; Ramasamy, A.K.; Ping, L.C.
Abstract: Currently, FPGA (Field Programmable Gate Array) technology is being widely used for accelerator control owing to its fast digital processing capability. This paper is purely a model to determine the design circuit to implement Partial Discharge (PD) detection in FPGA technology. The research shall involve ISE Simulator version 9.2i (Xilinx) and Very high integrated circuit Hardware Description Language (VHDL) programming to evaluate the use of Field Programming Gate Array (FPGA) for the detection and counting of partial discharge signals in underground cable. The impulse signals at the input data have very fast rise time in the range of 1 ns to 2 ns.
2010-01-01T00:00:00ZFPGA simulation of AD converter by using Giga Hertz speed data acquisition for partial discharge detectionEmillianoChakrabarty, C.K.Basri, A.Ramasamy, A.K.Ping, L.C.http://dspace.uniten.edu.my/jspui/handle/123456789/73642018-01-11T09:39:13Z2010-01-01T00:00:00ZTitle: FPGA simulation of AD converter by using Giga Hertz speed data acquisition for partial discharge detection
Authors: Emilliano; Chakrabarty, C.K.; Basri, A.; Ramasamy, A.K.; Ping, L.C.
Abstract: Currently, FPGA (Field Programmable Gate Array) technology is being widely used for accelerator control owing to its fast digital processing capability. This paper is purely a model to determine the design circuit to implement Partial Discharge (PD) detection in FPGA technology. The research shall involve ISE Simulator version 9.2i (Xilinx) and Very high integrated circuit Hardware Description Language (VHDL) programming to evaluate the use of Field Programming Gate Array (FPGA) for the detection and counting of partial discharge signals in underground cable. The impulse signals at the input data have very fast rise time in the range of 1 ns to 2 ns.
2010-01-01T00:00:00ZMatlab modeled for real time processing of partial discharge detection using fpga technology with giga hertz data acquisitionEmillianoChakrabarty, C.K.Basri, A.Ramasamy, A.K.Devkumar, S.Hock, G.C.Badjian, M.H.http://dspace.uniten.edu.my/jspui/handle/123456789/57342018-02-09T04:16:01Z2009-01-01T00:00:00ZTitle: Matlab modeled for real time processing of partial discharge detection using fpga technology with giga hertz data acquisition
Authors: Emilliano; Chakrabarty, C.K.; Basri, A.; Ramasamy, A.K.; Devkumar, S.; Hock, G.C.; Badjian, M.H.
Abstract: This paper is purely a model to determine the method to advance Partial Discharge (PD) detection. The research shall involve matlab and Verilog High Development Language (VHDL) programming to evaluate the use of Field Programming Gate Array (FPGA) for the detection and counting of partial discharge signals. © 2009 WASET.ORG.
2009-01-01T00:00:00ZMatlab modeled for real time processing of partial discharge detection using fpga technology with giga hertz data acquisitionEmillianoChakrabarty, C.K.Basri, A.Ramasamy, A.K.Devkumar, S.Hock, G.C.Badjian, M.H.http://dspace.uniten.edu.my/jspui/handle/123456789/93362018-02-23T06:50:20Z2009-01-01T00:00:00ZTitle: Matlab modeled for real time processing of partial discharge detection using fpga technology with giga hertz data acquisition
Authors: Emilliano; Chakrabarty, C.K.; Basri, A.; Ramasamy, A.K.; Devkumar, S.; Hock, G.C.; Badjian, M.H.
Abstract: This paper is purely a model to determine the method to advance Partial Discharge (PD) detection. The research shall involve matlab and Verilog High Development Language (VHDL) programming to evaluate the use of Field Programming Gate Array (FPGA) for the detection and counting of partial discharge signals. © 2009 WASET.ORG.
2009-01-01T00:00:00ZHigh frequency AC characteristics of 132kV power cableChakrabarty, C.K.Avinash, A.R.Ahmad Basri, A.G.http://dspace.uniten.edu.my/jspui/handle/123456789/56752017-12-12T06:29:17Z2015-01-01T00:00:00ZTitle: High frequency AC characteristics of 132kV power cable
Authors: Chakrabarty, C.K.; Avinash, A.R.; Ahmad Basri, A.G.
Abstract: Tangent Delta is an analytical method to determine cables insulation strength. It is a robust method to analyse aging of cables. Ideally the insulation (XLPE) acts as a perfect capacitor, the voltage and current are phase shifted 90°. Current through the insulation are purely capacitive (IC) with current leading voltage (V). Defects like contamination, scotching and void will add impurities in the insulation resulting in decrease of resistance of the insulation. This causes the increase in resistive current (IR) through the insulation making it no longer a perfect capacitor. A phase shift between the leading capacitive current (IC) and the voltage is utilized to determine the tangent delta (tan δ). Defects such as void in the insulation play a role in the electric field distribution in a cable. Simulation using Electromagnetic Computer Simulation Technology Studio (CST EM) displays a change in the electric field distribution and localization of the electric field. The changes in the Tan Delta, due to the presence of voids are then verified using HF Tangent Delta measurement method. Other cables with defects like scotching and contamination in the insulation (XLPE) will also be measured. The High Frequency AC setup utilizes a small testing environment due to the use of small length cables. This change will result in the reduction of total capacitance of the cable but this is overcome using High Frequency which is sufficient to create high electric stress on XLPE layer thus inducing measureable dielectric current. Tangent delta is obtained using the phase shift between leading current and applied voltage. © 2014 IEEE.
2015-01-01T00:00:00ZExtraction of cable joints tangent delta from bulk tangent delta measurement using HFAC methodShafi, H.Anthony, T.M.Basri, A.Raj, A.Chakrabarty, C.http://dspace.uniten.edu.my/jspui/handle/123456789/112802018-12-12T02:43:39Z2017-01-01T00:00:00ZTitle: Extraction of cable joints tangent delta from bulk tangent delta measurement using HFAC method
Authors: Shafi, H.; Anthony, T.M.; Basri, A.; Raj, A.; Chakrabarty, C.
Abstract: Tangent delta measurement is a well-known diagnostic used by many utilities for condition assessment. Guides on field diagnostic testing are well established by North American society through IEEE standards and guideline. Tangent delta, also called loss angle or dissipation factor (δ) measurement, is a diagnostic method of testing underground cables to determine the quality of the cable insulation in which value from the measurement will be used to compute dielectric loss within the cable insulation system. The higher the dielectric loss thus creates higher localized heating which leads to insulation degradation. However, dielectric loss measurement test technique is a global or bulk insulation condition assessment. It gives an overall condition of the complete cable system that includes cable, joints and terminations. A good dielectric loss result thus means that the overall condition of the complete cable system is in good condition whereas such high dielectric loss will just give unhealthy indication of the overall condition of the cable without revealing the weakness component within the insulation system. It is important to distinguish the dielectric loss of cable and its accessories within the system for the ease of maintenance works and such knowledge is an added advantage and greatly needed by the network owner. This paper presents the method of determining the tangent delta of cable joint from the total overall or bulk tangent delta measurement by using higher frequencies (>100Hz) at voltages above 1 kV. In this direct measurement method, the current (I), voltage (V) and phase (θ) were obtained by connecting a linear high voltage probe across the cable cross-section. The phasor diagram is then constructed and by some trigonometric exercises the actual phase across the joint is extracted. Hence, the tangent delta values were calculated. © 2016 IEEE.
2017-01-01T00:00:00Z