L. Martini on behalf of M.Noe Report on CIGRE D1.38.pdf - High ...

CONSEIL INTERNATIONAL DES
GRANDS RESEAUX ELECTRIQUES
INTERNATIONAL COUNCIL ON
LARGE ELECTRIC SYSTEMS
IEA IA HTS ExCo Meeting
November 28th, 2012, Tokyo (JP)
Report on CIGRE WG D1.38 Activities
Luciano <strong>Martini</strong> on behalf of Mathias Noe

www.cigre.org
Activities of CIGRE Working Group D1.38
„Emerging Test Techniques Common to High Temperature
Superconducting (HTS) Power Applications “
Mathias Noe
• Introduction to CIGRE
• Terms of References
• Members
• Activities
• Publications

CIGRE (www.cigre.org)
International Council on Large Electric Systems
Founded in 1921, CIGRE, the Council on Large Electric Systems, is an
international non-profit Association for promoting collaboration with
experts from all around the world by sharing knowledge and joining forces
to improve electric power systems of today and tomorrow.
CIGRE counts more than 2,500 experts from all around the world working
actively together in structured work programmes coordinated by the CIGRE
16 Studies Committess, overseen by the Technical Committee. Their main
objectives are to design and deploy the Power System for the future,
optimize existing equipment and power systems, respect the environment
and facilitate access to information.

CIGRE Study Committees
SC A1 Rotating Electrical Machines
SC A2 Transformers
SC A3 High Voltage Equipment
SC B1 Insulated Cables
SC B2 Overhead Lines
SC B3 Substations
SC B4 HVDC and Power Electronics
SC B5 Protection and Automation
SC C1 System Development and Economics
SC C2 System Operation and Control
SC C3 System Environmental Performance
SC C4 System Technical Performance
SC C5 Electricity Markets and Regulation
SC C6 Distribution Systems and Dispersed Generation
SC D1 Materials and Emerging Test Techniques
SC D2 Information Systems and Telecommunication

Working Groups of Study Committee D1
WG D1.23 Diagnostics and Accelerated Life Endurance Testing of Polymeric Materials for HVDC Application
WG D1.25 Application Guide for PD Detection in GIS using UHF or Acoustic Methods
WG D1.27 Material Properties for New and Non-ceramic Insulation
WG D1.28 Optimized Gas-insulated Systems by Advanced Dielectric Coatings and Functionally Graded Materials
WG D1.29 Partial Discharges in Transformers
WG D1.30 Oxidation Stability of Transformer Insulating Oils
WG D1.31 Dielectric Performance of insulating liquids for transformers
WG D1.34 Condition assessment for oil-impregnated insulation used in ac cables
WG D1.35 Performance of high-voltage and high-current measurement systems for high voltage testing
WG D1.36 Special requirements for dielectric testing of ultra high voltage (UHV) equipment
WG D1.37 Maintenance and evaluation of measuring procedures for conventional and unconventional partial discharge testing
WG D1.38 Emerging Test Techniques Common to High Temperature Superconducting (HTS) Power Applications
WG D1.39 Methods for Diagnostic/Failure Data Collection and Analysis
WG D1.40 Functional Nanomaterials for the Electrical Power Industry
JWG A2/D1.41 HVDC Transformer polarity reversal: Role of oil conductivity
WG D1.42 Radiation Ageing of Polymeric Insulating Materials
WG D1.43 Rotating machine insulation voltage endurance under fast repetitive voltage transients
WG D1.44 Testing of naturally polluted insulators
WG D1.45 Testing of insulator performance under heavy rain
JWG A2/D1.46 Field Experience with Transformer Solid Insulating Ageing Markers
JWG D1/A2.47 New Frontiers of DGA Interpretations for Power Transformers and their Accessoiries
WG D1.48 Properties of Insulating Materials under VLF Voltages
JWG D1/B1.49 Harmonized test for the measurement of residual inflammable gases
WG D1.50 Atmospheric and altitude correction factors
WG D1.51 Dielectric performance of eco-friendly gas insulated systems
WG D1.52 Moisture measurement in insulating fluids and transformer insulation
WG D1.53 Ageing of upgraded cellulose (Revision of TB 323)

WG D1.38: Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications
Terms of References (TOR)
To study the emerging test procedures and test techniques common to HTS
power applications, including the electrical insulation techniques, HTS materials
development and thermal/cooling techniques for HTS power equipment.
1. Electrical insulation for HTS power equipment
• Fundamental insulation characteristics under cryogenic conditions, including
size effects
• Insulation degradation mechanisms, V-t characteristics and insulation reliability
assessment
• Systematization of electrical insulation properties for insulation design
• Database for cryogenic electrical insulation
2. Investigation of HTS materials for power equipment
• Fundamental characteristics of 2 nd generation materials
• Material properties required from equipment design
• Material properties required from operational conditions of power equipment
acceptance criteria

WG D1.38: Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications
Terms of References
3. Thermal/cooling techniques for HTS power equipment
• Common cooling structures and the enhancement of cooling efficiency
• Cooling related materials and thermal isolation techniques including vacuum
• Common cooling techniques for HTS power equipment
4. Testing procedures and techniques concerning electrical insulation, materials
and thermal/cooling behavior of HTS power equipment in respect to methods and not
to acceptance criteria
Activities
• 2010-08-25 - WG D1.38 Kick-off Meeting, Paris
• 2010-08-25 - Workshop on Status of High-Temperature Superconducting (HTS)
Power System Applications, Paris
• 2010-10-05 - ExCo Meeting: Report on CIGRE Activities, Zurich
• 2012-08-29 - Workshop on Present Status and Future Perspectives of HTS Power
Applications, Paris
• 2012-10-10 – WG D1.38 Meeting, Portland

CIGRE SC Working Group D1.38
“Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications”
Scope:
The scope of the proposed WG is to study the emerging test procedures and test techniques common to HTS power
applications, including the electrical insulation techniques, HTS materials development and thermal/cooling
techniques for HTS power equipment.
The investigation items of the proposed WG are as follows.
1. Electrical insulation techniques for HTS power equipment
• Fundamental insulation characteristics under cryogenic conditions, including size effects
• Insulation degradation mechanisms, V-t characteristics and insulation reliability assessment
• Systematization of electrical insulation properties for insulation design
• Contribute to database for cryogenic electrical insulation
2. Investigation of HTS materials for power equipment
• Fundamental characteristics of 2nd generation materials
• Material properties required from equipment design
• Material properties required from operational conditions of power equipment
3. Thermal/cooling techniques for HTS power equipment
• Investigate the common cooling structures and the enhancement of cooling efficiency
• Examine the cooling related materials and thermal isolation techniques including vacuum
• Investigate the common cooling techniques for HTS power equipment
The HTS test techniques that will be discussed in the WG are electrical insulation, HTS materials and
thermal/cooling techniques for HTS power equipment, including cables, transformers, SMES, rotating machines and
current limiters. The WG will summarize the available information

Participants of CIGRE SC Working Group D1.38
Mathias Noe / Prof (Conv.) Germany KIT Director
Naoki Hayakawa / Prof. (Secr.) Japan Nagoya University Professor
Jeonwook Cho / Dr. Korea KERI Programm Manager
Greg Snitchler / Dr. USA AMSC
Luciano <strong>Martini</strong> / Dr. Italy RSE Manager T&D Technologies
Shigeo Nagaya / Mr. Japan Chubu Electric Power Co. R&D Manager
Alexander Polasek Brazil CEPEL Researcher
Isidor Sauers USA Oak Ridge National Lab. Senior Scientist
Christian Schacherer, Dr. Switzerland ABB Scientist
Frank Schmidt / Mr. Germany Nexans Deutschland Manager HTS Cable
Johan Smit / Prof. Netherlands TU Delft Director
Wolfgang Schmidt / Dr. Germany Siemens Principal Engineer
Christof Sumereder, Dr. Austria University Graz Scientist
Pascal Tixador / Dr. France Grenoble INP Researcher
Dag Willén / Mr. Denmark nkt cables HTS product development
Alan Wolsky / Dr. USA Argonne National Lab Technology Evaluations
Ying Xin / Ph.D China Innopower General Manager
Yie-Yuan Xi, Ph.D USA Superpower Senior Materials Scientist

Participants of CIGRE SC D1 Working Group D1.38
“Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications”
WG Meeting + HTS Workshop
WG D1.38 WS
Program

2012-10-10 – WG D1.38 Meeting, Portland during ASC 2012
Participants
Mathias Noe Convenor
Naoki Hayakawa Secretary
Jeonwook Cho
Drew Hazelton
Bartosz Lukasik
Luciano <strong>Martini</strong>
Alexander Polasek
Wolfgang Schmidt
Richard Taylor
Tomonori Watanabe
Pascal Tixador
Alan Wolsky
Ying Xin
Michael Blaz delegate
Mark Stemmle delegate
John Gannon delegate
Ken-ichi Sato observer
Franco Moriconi observer
Hunju Lee observer
Giuliano Angeli observer

Working Title of Technical Brochure
Common characteristics for high temperature superconducting power equipment

CIGRE SC Working Group D1.38
“Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications”
Table of Contents of Technical Brochure
1 Introduction
2 Electrical Insulation
2.1 Cryogenic insulation characteristic
2.2 Operating parameters and high voltage components
2.3 Test techniques for cryogenic electrical insulation
3 HTS Material
3.1 State-of-the-art and future expectations
3.2 Test techniques for HTS material
3.3 Modelling (???)
4 Cooling systems
4.1 State-of-the-Art and cooling types
4.2 Common characteristics
5 Common and specific requirements for electrical insulation, HTS materials and cooling
5.1 Cables
5.2 Fault Current Limiters
5.3 Superconducting Magnetic Energy Storage
5.4 Rotating Machines
5.5 Transformers
6 Summary

Grid specifications
CIGRE SC Working Group D1.38
“Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications”
Example: Medium Voltage Cable Specification
Parameter range
Rated Voltage U r kV (rms) (6- up to 36 kV)
Rated Current
Line frequency
Prospective short circuit current
Continous short-circuit current I k kA (rms)
Maximum fault duration
I r kA (rms) appr. 1 up to 4 kA
f Hz 50/60 Hz
i p kA (peak) 10-50? times rated current
t r s a few cycles up to seconds
Cable length l km a few km
Grid Harmonics THD less than 3 % maximum of 3. and 5. harmonic
Trench dimensions m large variety
Available diameter for installation
d mm appr. 150-250 mm
Maximum time without cooling system operationt m d -
Availability
Cool down and warmup time (cable spec) t Cool h a few days depending on length and cooling power
Conductor requirements
Tape width b mm appr. 4 mm without insulation?
Tape thickness d µm or mm appr. 0.25-0.4 mm without insulation?
Critical current per tape
Ic Homogeneity over length
Minimum bending radius
Tensile strength
Strain tolerance
I c A 100-180 A at operating temp (or at 77 K ?)
% ± 10 % short sections for the Ic measurement e.g. < 1 m
r mm 1G: 30-35 mm, 2G:

CIGRE SC Working Group D1.38
“Emerging Test Techniques Common to
High Temperature Superconducting (HTS) Power Applications”
Activities
• August 2011, Kick-off Meeting, Paris, France
• June 2011, WG meeting, Hanau, Germany
• September 2011, WG meeting, Den Haag, Netherlands
• June 2012, WG Meeting, Schenectady, USA
• August 2012, WG Meeting, Paris, France
• August 2012, HTS Workshop, Paris, France
• September 2012, WG Meeting, Portland, USA
• March-May 2013, WG Meeting, Bejing, China
• September 2013, WG Meeting, Genova, Italy

Thank you
for your attention
luciano.martini@rse-web.it