Power Transformer Diagnostic Methods Maintenance And Lifetime Extension

Transcription

1 Training Power Transformer Diagnostic Methods Maintenance And Lifetime Extension 22 th - 26 th April, 2018 Dubai, UAE

2 Introduction Regular diagnosis and maintenance of power transformers is important in determining transformer aging and prolonging their lifetime. The course discusses the principles of power transformers; operation; diagnostic methods that help you avoid catastrophic failures and select the best methods for troubleshooting; extending the period of maximum load carrying capability of transformers; and lifetime extension processes. The aim of this course is to enrich and advance the skills and knowledge participants and teach them correct diagnostic methods as well as maintenance processes by evaluating and interpreting chemical and electrical tests. Course Objectives 1. To understand the basics of transformer operational methods. 2. To evaluate tools and techniques to achieve continuous improvements such as chemical/physical/electrical analysis, run charts, cause and effect diagrams, and flow charts. 3. To interpret oil analysis results. 4. To evaluate and use different diagnostic methods. 5. To select the appropriate maintenance action required to extend a power transformer lifetime. 6. To evaluate the quality of different types of insulating oil and paper. 7. To evaluate the condition of the transformer by using electrical test results. Practical Session The course includes some electrical maintenance training where transformer demos and measuring tools are demonstrated. Different winding, paper and core slides are also studied. In addition, videos of transformer design manufacturing, maintenance and regeneration processes are available throughout the course. Who Should Attend? The course is of interest for all who work in the power transformer field, such as electrical engineers, maintenance engineers and technicians, chemical engineers, laboratory chemists and technicians, as well as for supervisory/ managerial staff from maintenance, laboratory, and other departments related to the transformer service industry. At the end of the course participant will gain the following an understanding of the new technologies of electrical equipment maintenance and monitoring. an understanding of the fundamental theory and principles of the construction and the operation of power transformers an insight into the identification and application of transformers types Knowledge of power transformer protection an understanding of power transformers oil and oil tests and interpretation of results Knowledge of the most effective power transformer electrical tests Skills in how to manage power transformer breakdowns to ensure minimum disruption an understanding of Instrument Transformers ( CT &VT) and its applications for measurements and protection an understanding of earthing system and electrical safety an understanding of Protection relays types, operation and maintenance an understanding of Circuit breakers types, operation and maintenance an understanding of Capacitor banks, cables and batteries types, protection and maintenance Other Information 1. Course document is about 150 pages. 2. Course presentation material is about 250 pages. 3. Exercises and discussions will be conducted at the end of the course. 4. Case studies and training of results diagnostic methods. 5. USB with the course document, power point presentation, video films, articles and exercises will be offered to participants.

3 Instructor Profile Ramsey Jadim Dr. Ramsey Jadim is a professional Swedish chemical engineer with a master s degree from Uppsala University-Sweden and PhD candidate in Linnaeus University Sweden. He has held various positions in academic and industrial sectors in the last 30 years in Sweden. Currently, he is working in Bahrain as general manager of Rezayat Group. In addition, he has published many articles and projects relating to chemistry, science and power transformer maintenance. Dr. Ramsey has delivered several training programs related to a variety of technology methods in power transformer, chromatography and spectroscopy technique, statistic method, laboratory quality, management and lab safety. Scientific status Master of Science of chemical technology - Uppsala University-Sweden PhD candidate (Maintenance Terotechnology) Linnaeus University - Sweden Published scientific articles 1. Procedure for the determination of n-octanol/water partition of Boron-organic compounds with Inductively Coupled Plasma-Atomic Emission Spectrometry. ICP Information Newsletter, vol.25, number 3, 183, USA Maximum Acceptable Concentrations of DBDS, Sulphur Mercaptan and Optimal Concentration of Passivators for Safe and Prolonged Operation of Power Transformers, IEEE Vol. 23, No. 4; August GCC Cigre 2005 Paper Experiences of Continuous Dga Monitoring on a Faulty Transformer. 4. Effects of acid strength (ph-value) of transformer oil on copper sulfide deposits rate. Middle East Electricity conference-february 2012 Dubai. Patent US 2017/ A1 (Device to measure the Corrosive Sulfur Species Formation Rate in Power Transformer and a Method of using the same). Mar. 23, United States. Knowledge partner: tel.: charles.savio@fleming.events

4 Day 1 Day 4 Transformer fundamentals and operation Transformer mechanical design: lamina core, cooling system, winding design, core design, insulation system type, preservation sealing systems, bladder, failure relay, pressure relief device, sudden pressure relay, buchholz relay, tap changer, switch Gear. Transformer types Insulation system composition Transformer oil type Thermal effects Day 2 Regular oil analysis: acidity, moisture content, interfacial surface tension, peroxide number, breakdown voltage, dissipation factor (tan d), additive/inhibitor content (BHT), mercaptan, Cu/Cu2S deposition (CCD), sibenzyl sulphide (DBDS), metals, ph-value, passivator content, colour, density, flash point, refractive / dispersion index, viscosity (kinematic), viscosity index, PCB, particle counts Thermal ageing of mineral insulating oil and krafts paper: degree of polymerization (DPvalue), furfural (furanic compounds) Dissolve gas analysis (DGA): hydrogen methane, ethane, ethene, acetylene, propane, propene, carbon monoxide, carbon dioxide, oxygen, nitrogen, TCG (total combustible gas) Energy losses: copper loss, core loss, stray losses, circulation loss Oxidation and degradation of insulation system Factors affecting solid insulation degradation Corrosive sulfur effect Oxidation process Quality control tests New oil tests Day 3 Insulation system aging factors: oxygen concentration, temperature rate. Effect of the sunlight, contact surface between oil and oxygen, effect of electrical stresses on oxidize ability, effects of discharges on the hydrocarbons. Aging measurement Electrical condition monitoring: polarisation and depolarisation current, transformer winding resistance, transformer turns ratio, no-load loss, load loss and impedance and discharge/partial discharge/corona. Day 5 Diagnostic methods and results interpret. Estimation methods: moisture in cellulose by using equilibrium diagrams, DP value from furfural analysis, gas pressure in transformer. Transformer lifetime extension Oil treatment: Oil Regeneration, filtration, drying of transformer, continuous online conditioning, continuous degassing of transformer and PCB treatment process tel.: charles.savio@fleming.events

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