1. IEEE CIGRE Liaison Report on SCA2 Transformers
For IEEE Transformer Committee Meeting
April 12-16, 2015, San Antonio TX
Raj Ahuja

2. SC A2 Working Groups-Transformers
WG A2-37 Transformer Reliability Survey - S. Tenbohlen (DE)
WG A2-38 Transformer Thermal Modelling - J. Lapworth (UK)
WG A2.40 Copper sulphide long-term mitigation and risk assessment J. Lukic (RS)
JWG A2/D1.41 Oil conductivity under DC condition – A. Küchler (DE)
WG A2.42 Guide on transformer Transportation - A. Mjelve (NO)
WG A2.43 Transformer bushings reliability - A. Mikulecky (HR)
WG A2.44 Transformer Intelligent Condition Monitoring C. Dupont (BR)
WG A2.45 Transformer Failure Invest. & post-mortem Analysis M.C. Lessard (CA)
JWG A2/D1.46 Field experience with trans. solid insulating ageing markers R. Mertens (BE)
JWG D1/A2.47 New frontiers of Dissolved Gas Analysis (DGA) interpretation for power transformers and their accessories M. Duval (CA)
WG A2.48 Technology and utili. of Oil Insulated HV Shunt Reactors S. Ryder (UK)
WG A2.49 Condition Assessment of Power Transformers P. Cole (AU)
WG A2.50 Effect of the distributed energy sources and consequent induced reverse power flow (step up) on T&D transformers J. C. Riboud (FR)
JWG A2/D1.51 Improvement to Partial Discharge Measurements for Factory and Site Acceptance Tests of Power Transformers - S. Coenen (DE)
JWG A2/C4.52 HF transformer models for non-standard waveforms Bjorn Gustavsen (No)

3. Recent CIGRE BROCHURES
Scope Ref Year
Transient Interac-Transformers & Power System
Guide for Specifications
Guide for Design Review
Guide for Factory Capability Assessment
Guide for Fire Safety
Guide on Transformer Maintenance
HVDC Tr. – Test, ageing, reliability in service
HVDC Tr. – Guidelines for design review
Experience in service with new insulating liquids
Copper Sulphide in Transformer Insulation

4. 2015 SC A2 Colloquium
2015 Colloquium in Shanghai September (with SC B3 and C3)
Preferential Subjects:
EHV/UHV and EHVDC/UHVDC Transformers and its components
Specification, design, manufacturing and testing
Transportation constraints, installation and commissioning
Reliability, operation and maintenance
Equipment technologies for substations of the future and Smart Grid
HV equipment using innovative efficient and environmentally friendly interrupting media and dielectric materials
Optimization of substation design, O&M and equipment in efficiency, compactness, noise, costs, low maintenance, etc.

5. 2015 SC A2 Colloquium
Improved control of switching devices and means to reduce network stresses
Increased application of semi conductor technologies and superconductivity
Making the Best use of the Existing transformer fleet
Life Management techniques, criticality evaluation, fleet ranking
Improvements to condition monitoring, diagnostic techniques and on-site testing
Influence of more severe weather and new environmental considerations
Mitigation techniques to cope with higher stresses applied on aged transformers

6. Future WG activities
Possible future WG - under discussions
FRA Interpretations
Phase Shifting Transformers
Effects of GIC
Life Extension
Typical and Minimum Sound Level
Efficient and eco-design transformers

7. Thanks for Your attention