Radiometer Monitoring System for Partial Discharge Detection in Substation. Y. Zhang1, J.M. Neto3, D. Upton1, A. Jaber1, U. Khan1, B. Saeed1, H. Ahmed1,.
monitoring of Partial Discharge (PD) activity in switchgear and other assets has long been recognised [1]. The consequence of asset failure within a transmission ...
Abstractâ Partial discharge (PD) activities in cables and switchgears provide an indication of weak spots in insulation systems. The business drivers for carrying ...
Sep 25, 2010 - discharge monitoring device (PDM) on three-phase gas insulated switchgear (GIS). The PD source is a protrusion at different positions on the ...
Jun 11, 2009 - devices for the condition monitoring of medium voltage. (MV) cables and switchgear. In order to provide a complete MV network monitoring ...
Monitoring System for High Voltage Apparatus. LINPENG ... Key-Words: High voltage, Partial discharge, Multi-Agent, Monitoring, . .... Framework and SqlServer.
Aug 10, 2016 - frequency domain of both sensors was carried out and the ... Based on the AE method, a low-cost piezoelectric sensor attached to the external ...
the suitability of UHF PD monitoring techniques developed on .... captured using a transient digitiser (1 GHz bandwidth). The ... appeared to be loss-free. In some ...
Aug 4, 2013 - protection technology, the digital signal processing and information fusion .... If using two ways of the orthogonal down-converter, the changes ...
Department of Electrical Power Engineering, Faculty of Electrical ... insulating systems of high voltage machines and equipment. ... source of a testing voltage.
Transformer removed from service for power factor testing. - An oil sample was pulled from the bushings. A field Hydran
Oct 28, 2013 - Polymers are widely used as insulation material in high voltage systems due to their high breakdown strength under electrical stress.
Jan 16, 2014 - oxide (MgO), clay, or other new materials proposed. For a ... is a several nm layer of polymer chains that are strongly bound, interacting with the first layer ..... delivery, the addition of ZnO in surge arresters results in excellent
Pengujian Tegangan Tinggi, Erlangga, Jakarta. 7. Abduh, Syamsir (2001), Teknik Tegangan Tinggi,. Dasar Pembangkit dan Pengukuan, Salemba. Teknika ...
of transformer oil with the needle-to-plane electrode system. He pointed out that ... research of Denat [14] showed that liquid argon and nitrogen under overheating ..... charge injection process at the metal-oil interface in negative half-cycle.
TEV; Switchgear. I. INTRODUCTION. Partial discharge (PD) measurement is a well established condition monitoring technique used to detect incipient failures.
The gas insulated structures that are filled with sulphur hexafluoride (SF6) gas, such as ... The gas insulated switchgears (GISs), which are composed of a circuit breaker, disconnect and grounding switches and other high voltage components, have ...
Abstractâ This paper describes the characteristics of partial discharge(PD) depending on SF6 pressure in high voltage direct current(HVDC). Electrode systems ...
b) Analysis of the propagation in high and medium voltage cables by measurement and FDTD calculation. c) Simulation of the PD propagation in a cable joint.
quantify the use of partial discharges in evaluating the quality of any insulation system, the lowest voltage at which such events is detected, the partial discharge.
B. Rajesh Kamath is with Sri Siddhartha Institute of Technology,. Tumkur ... B. Rajesh Kamath, Member, IAENG , J. Sundara Rajan, K. A. Krishnamurthy and.
unearthed and the same testing voltage is through all the winding), while during the operation the voltage is evenly distributed along the winding from zero to.
Nov 15, 2017 - The performance of the algorithm has been tested using UHF signals generated by ... Keywords: blind source separation; electric insulation; partial discharges ... measurement is crucial in the monitoring and maintenance of electric equ
Abstract. Although gas insulated switchgear and substations (GIS) belong to the most reliable components of electric power networks, failures still occur in their ...
Dijagnostika defekata i stanja Defekti izolacionog sistema A. Ivični problemi izolacije. B. delaminacija j izolacije j p pri p provodniku C. unutrašnja delaminacija izlacije D. defekti tipa „drvo“ među slojevima j j izolacije j od slota E. odvajanje F. šupljina u izolaciji G. Jako polje između pp i pv sloja g j (pp) p poluprovodnog p g sloja j H. fragmentacija J. Jako polje između pv sloja i mase I. Jako polje između fragmenata pp sloja K. unutrašnje j strane p prevoja j L. Jako polje na kraju pv (profilisanje potencijala) sloja M. Površinska odvođenja na distancerima N. diskontinuitet na tehnološkim kanalima
Efekat p promene taemperature p
Efekat p promene opterećenja p j
Mehanizmi degradacije g j izolacije j
Alarma funkcija monitoringa PP Podešavanje alarma
Lista alarmnih događaja
Smetnje j višestruko nadmašiju j koristan signal g
B smetnji Bez t ji
TEHNIČKO REŠENJE uređaja đ j za monitoring it i PP
Sprežna jedinica
Sprežna jedinica p j a) sprežni kondenzator i niskonaponska impedansa; b) b) električna šema niskonaponske impedanse sa izolovanim BNC izlazom
Oprema za parcijalna pražnjenja
Koncepcija lokalne mreže u elektrani (eternet) ruter PD1
server PD1 Ethernet Switch PD1
IPS
opticka veza PD merenje
PD merenje
ASA firewall - Internet segment
PD merenje
Internet
generator 1
generator 2
generator n ASA firewall - Internet segment
SCADA
SCADA
Protocol Switch
SCADA
opticka veza
Ethernet Switch SC1
IPS
Primarni ruter - Institut server SD1
Koncepcija potpune mreže za sistem monitoringa PP
ZAHVALNICA Ovaj rad je nastao uz podršku Ministarstva nauke Vlade republike Srbije, u okviru Programa „Program istraživanja u oblasti tehnološkog razvoja za period 2008-2010“, oblast „Energetske 2008-2010 Energetske tehnologije i rudarstvo“, u okviru koga finansira Projekat: „Unapređenje U đ j dijagnostike dij tik stanja t j izolacionog i l i sistema i t turbo generatora razvojem off-line i on–line merenja parcijalnih pražnjenja“ , evidencijski broj 17030.
