Comparison between conventional and vacuum technology in ... Mpowering...Power Transformers Comparison between conventional and vacuum technology in On-Load Tap-Changers Mr. Günter

Power Transformers

Comparison betweenconventional and vacuum technology

in On-Load Tap-ChangersMr. Günter Panzer

Maschinenfabrik Reinhausen GmbH

Sales Middle East, India, Africa

Director

Date: 15.09.2011Sales Department

© Maschinenfabrik Reinhausen GmbH 2011

Sales Department


Date: 15.09.2011

REINHAUSEN Group

Business units, customers and brands

Transformer

Control

Power

Composites

Power

Quality

Plasma

Applications

Highvolt

Test Systems

TC PQ

PA HT

PC

Power Composites

TransformerControl

PowerQuality

Plasma Applications

HighvoltTest-Systems

Project

Component Product

SystemManufacturer

Enduser

Hochleistungs-

kunststoffe

Regelung von

Transformatoren

Blindleistungs-

kompensation

Plasma-

Anwendungen

Hochspannungs-

Prüftechnik

Page 2 of 19



Sales Department


Date: 15.09.2011

REINHAUSEN Group

Milestones

Production start of Shipping Saws in Reinhausen

Maschinenfabrik Reinhausen Andreas Scheubeck

Patent no. 474 613 granted to Dr.-Ing. Bernhard Jansen

Market Introduction of OILTAP® Type M (Mechanical innovation)

MRB, Embu/Brazil

RA, Rockdale/Australia

RM, Humboldt/USA

RI, Mailand/Italy

MRC, Panyu/China and EMR, Thiruninravur/India

RAP, Kuala Lumpur/Malaysia Reactive Power Compensation MS (PQM) taken over from Siemens

MESSKO, Oberursel/Germany

Market Introduction of VACUTAP® Type VV (Switching techn. innovation)

MRJ, Yokohama/Japan Delivery of the 100.000th Tap-changer

HV, Dresden/Germany

MRR, Moscow/Russia Low-voltage Compensation Systems business taken over

from AEG KuW GmbH, Berlin/Germany

RP, Regensburg/Germany

SBR (today RZA), Johannesburg/South Africa

MRT, Shanghai/China and RME, Dubai/VAE Acquisition of shares in ITASS Iran Transfo After Sales Service Co.

MR acquired majority of JE Plasma Consult GmbH, Wuppertal/Germany

MRM, Suzhou/China

RKR, Seoul/South Korea, RLU, Luxembourg

and RPC Regensburg/Germany

RCA, Montreal/Canada

RID, Jakarta/Indonesia

1868

1901

1926

1973

1980

1987

1990

1993

1996

1997

1999

2000

2001

2002

2003

2004

2005

2006

2007

2009

2010

2011

Page 3 of 19



Sales Department


Date: 15.09.2011

REINHAUSEN Group worldwide

Page 4 of 19



Vacuum Technology

Experience

Advantages

VACUTAP® Technology

Page 5 of 19



No Interaction between Arc and Oil

Conventional technology

Switching arc under oil

Oil: insulating, cooling, lubricating and

arc quenching

VACUTAP® technology

Switching arc in vacuum

Oil: just insulating, cooling and

lubricating

VACUTAP®

© Copyright MR Maschinenfabrik Reinhausen GmbH

Page 6 of 19



Extended Oil Service Life


Oil ageing due to carbon particles

resulting from arc quenching

Oil filter to be exchanged regularly


No break-down arc in tap-changer oil

No oil filter unit necessary

VACUTAP®


Page 7 of 19



Marginal Contact Wear


Contact wear

Contact life: 200,000 to 500,000

switching operations


Rate of contact wear is more than one

decade lower compared with copper-

tungsten contacts

Contact life: 600,000 switching

operations

VACUTAP®


Page 8 of 19



Less Maintenance


Maintenance each 40,000 to 100,000

switching operations, depending on the

operation mode

Additional time-based criteria


Maintenance each 300,000 switching

operations, therefore maintenance-free

in most network applications

Enhanced transformer availability

No time- or current-based criteria

Less spare parts, simplified logistics

Maintenance intervals Maintenance intervalst t

VACUTAP® © Copyright MR Maschinenfabrik Reinhausen GmbH

Page 9 of 19



Ecologically Friendly


Mineral oil

Carbonized oil and filters to be

disposed


Mineral oil and alternative insulating

liquids possible

Fewer oil changes necessary

(extended oil service life)

VACUTAP®


Page 10 of 19



Applications

Applications

Page 11 of 19



Network Application

Highest system availability

- Maintenance free on-load tap-changer over

the service life of the transformer

- Significantly longer oil service life and contact life

Example:

Delta-connection, 5,000 switching operations per year,

Conclusion: 60 years transformer service life

without any maintenance

- No costs for on-load tap-changer maintenance, spare

parts and oil filters over the transformer service life0 %

100 %

OILTAP® VACUTAP®

Maintenance costs


Page 12 of 19



OILTAP® VACUTAP®

100 %

Electric Arc Furnace (EAF) Application

High system availability and reliability

- Maintenance interval: 300,000 switching operations

without time- or current-based criteria

- Significantly longer oil service life and contact life

Example:

200,000 switching operations per year,

Guess: 20 years transformer service life

- Cost reduction for on-load tap-changer maintenance,

spare parts and oil filters over the transformer service life

- Can be again reduced using VR-I-HD (Heavy Duty)

600,000 switching operations without time- or current-

based criteria

Maintenance costs


Page 13 of 19



Extended Application Range


Limitations in HVDC or converter

transformer applications


Very quick dielectric recovery (up to 10

kV/µs)

Time

(ms)

Current/

Voltage

Recovery Strength

Vacuum 10 kV/s

HVDC

HVDC-Transformer

Network-Transformer

4 6 8 102-2 0

Curent

Zero

Time

(ms)

Current/

Voltage

Recovery Strength

Conventional

HVDC

HVDC-Transformer

Network-Transformer

4 6 8 102-2 0

Curent Zero

VACUTAP®


Page 14 of 19



High-voltage Direct Current Transmission (HVDC)

Application

High system availability and reliability

- Maintenance interval: 300,000 switching

operations without time- or current-based

criteria

- Significantly longer oil service life and

contact life

Quick recovery voltage of 10kV/µs facilitates

the switching of non-sinusoidal currentsTime

(ms)

Current/

Voltage

Recovery Strength

Vacuum 10 kV/s

HVDC

HVDC-

Transformer

Network-

Transformer

4 6 8 102-2 0

Curent

Zero


Page 15 of 19



Products

Vacuum Technology

Products

Page 16 of 19



More than 20 Years of Experience in VACUTAP®

Technology

VACUTAP®

RMV-II

1989 1995 2000 2001 2004 20102006

More than 27,000 supplied units of VACUTAP®

VACUTAP®

VT

VACUTAP®

VV

VACUTAP®

RMV-AVACUTAP®

AVT

VACUTAP®

VR 700

VACUTAP®

VR 1300

VACUTAP®

VR I HD

2011

VACUTAP®

VM

1989 1995 2000 2001 2004 2006 2010 2011


Page 17 of 19


© Maschinenfabrik Reinhausen GmbH 2011 18

VACUTAP®: Portfolio

VACUTAP®


Page 18 of 19



VACUTAP® VM

On-load Tap-changer for Transformers

Maintenance Intervals

Don‘t Compromise!An investment that quickly pays off

~$Overview_Presentation.pptm

Documents

Comparison between conventional and vacuum technology in ... Mpowering...Power Transformers Comparison between conventional and vacuum technology in On-Load Tap-Changers Mr. Günter