Investigation of model transformer insulation behavior during PD activity in Di-Benzo-Di-Sulfide Sulphur contaminated transformer oil using online tan delta measurement
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Sulphur can be present in mineral insulating oil and can manifest in stable, highly reactive and corrosive form. The corrosive sulphur reacts with the copper conductor in transformer and forms semi conductive copper sulphide at the surface of the copper conductor. The paper insulation used on the copper conductor may get damaged due to copper sulfide deposits which also affect the partial discharge activities prevalent in the transformer paper-oil insulation. The affect of Sulphur on model transformer paper-oil insulation is studied with online measurement of Dissipation factor (tanδ) and partial discharges (PD). The paper presents results of the investigatory work carried out with on-line tanδ and PD measurements made during experiments with Paper covered copper conductor (PCCC) in presence of Di-Benzo-Di-Sulfide contamination in transformer oil.
C.Bengtsson et.al, “Oil Corrosion and Cu Cu2S Deposition in Power Transformers”, CIGRE Moscow Symposium 2005.
F.Scatiggio, V.Tumiati “Corrosive sulfur induced failures in oil-filled electrical power transformers and shunt reactors”
IEEE transactions on power delivery, vol, 24, No.3, July 2009 [3.] B.P.Singh, T.S.R.Murthy, G.Jayaraman “Effect of Mercaptans Sulphur on Insulation Performerence of HVDC Converter Transformer” Cigree 2006
J.Sundara rajan, K.Dwarakanath, Srilatha, C.Jairam naidu and A.K.Tripathy “ Monitoring of Total and Mercaptans sulfur under combined thermal electrical ageing of paper-oil insulation system”
Shuagzan Ren “A Research Summary of Corrosive Sulfur in Mineral Oil” proceedings of 9th international conference on properties and application of Dielectric Materials, July 1923,2009, Harbin, China
Jashandeep Singh, Yog Raj Sood &Piush Verma “The Influence of Service Aging on Transformer Insulating Oil Parameters” IEEE Transactions on Dielectrics and Electrical Insulation Vol. 19, No. 2; April 2012
Donald Chu, Andre Lux, “On-Line Monitoring of Power Transformers and Components: A Review of Key Parameters” IEEE Transformer On-Line Monitoring Task Force
C.F.Ten, M.A.R.M.Fernando and Z.D.Wang “Dielectric Properties Measurements of Transformer oil, Paper and Pressboard with the effect of Moisture and Ageing.
J.Sundara Rajan “partial discharge phenomena in paper oil insulation under conditions of copper corrosion due to sulphur in oil” proceedings of the 9th international conference on properties of dielectric materials July 19-23, 2009, Harbin, china
R. J. Vam Brunt”Stochastic Properties of Partialdischarge Phenomena” IEEE Transactions on Electrical Insulation Vol. 28 No. 5, October 1991
S.Sentil Kumar, Y.P.Narayanachar and R.S.Neema, Response of Narrow Band Detector and Analyzer to Ageing Experiment‟, IEEE Conference on Electrical Insulation and Dielectric Phenomena (2002 CEIDP), Cancun, Quintana Roo, Mexico,(October 20-24, 2002)
L.Sanjeev Kumar, Ramachandra.B., S.Senthil Kumar, “Performance of PCCC in presence of DBDS in transformer oil using Ø-t-N technique” International Conference on Power and Advanced Control Engineering (ICPACE), 2015 IEEE Xplore 12-14 Aug. 2015, Bangalore, pages 393 - 398
