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WAUKESHA ELECTRIC SYSTEMS energy solutions … to power your future ANSI/IEEE Standards Power Transformer Updates ANSI/IEEE Standards Power Transformer Updates H. Jin Sim Waukesha Electric Systems H. Jin Sim Waukesha Electric Systems Weidmann-ACTI Inc. Technical Conference “New Diagnostic Concepts for Better Asset Management” November 14 – 16, 2005 Sheraton Gunter Hotel, San Antonio, TX

Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Page 1: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

energy solutions… to power your future

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

H. Jin SimWaukesha Electric Systems

H. Jin SimWaukesha Electric Systems

Weidmann-ACTI Inc. Technical Conference“New Diagnostic Concepts for Better Asset Management”

November 14 – 16, 2005Sheraton Gunter Hotel, San Antonio, TX

Page 2: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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ANSI/IEEE Standards for Power TransformersAgenda

•Key standards for Power Transformer•What has changed recently?•Major new documents being developed currently

Let’s make this interactive!

Please stop me and ask questions during the

presentation if you have them.

Page 3: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Key Standards for Power TransformerKey Standards for Power Transformer

IEEE STD C57.12.00IEEE STD C57.12.00--2000 2000 IEEE Standard General Requirements for IEEE Standard General Requirements for LiquidLiquid--Immersed Distribution, Power, and Regulating TransformersImmersed Distribution, Power, and Regulating TransformersANSI STD C57.12.10ANSI STD C57.12.10--19971997 Product Standard for Power Transformers Product Standard for Power Transformers with a LONG title aswith a LONG title as

AMERICAN NATIONAL STANDARD FOR TRANSFORMERS—230 kV and Below 833 / 958 through 8333 / 10 417 kVA, Single-Phase,and 750 / 862 through 60 000 / 80 000 / 100 000 kVA,Three-Phase Without Load Tap Changing;and 3750 / 4687 through 60 000 / 80 000 / 100 000 kVAwith Load Tap Changing—Safety Requirements

IEEE STD C57.12.90IEEE STD C57.12.90--1999 1999 IEEE Standard Test Code for LiquidIEEE Standard Test Code for Liquid--Immersed Distribution, Power, and Regulating TransformersImmersed Distribution, Power, and Regulating Transformers

Page 4: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major Changes in C57.12.00-2000Changes Of Cooling Class Designation

First letter: Internal cooling medium in contact with the windingsO mineral oil or synthetic insulating liquid with fire point < 300°CK insulating liquid with fire point > 300°CL insulating liquid with no measurable fire point

Second letter: Circulation mechanism for internal cooling medium:N natural convection flow through cooling equipment and windingsF forced circulation through cooling equipment (cooling pumps), natural

convection flow in windings (non-directed flow) D forced circulation through cooling equipment, directed from the cooling

equipment into at least the main windings Third letter: External cooling medium

A airW water

Fourth letter: Circulation mechanism for external cooling mediumN natural convectionF forced circulation (fans, pumps)

Major Changes in C57.12.00-2000Changes Of Cooling Class DesignationChanges Of Cooling Class Designation

First letter: Internal cooling medium in contact with the windingsO mineral oil or synthetic insulating liquid with fire point < 300°CK insulating liquid with fire point > 300°CL insulating liquid with no measurable fire point

Second letter: Circulation mechanism for internal cooling medium:N natural convection flow through cooling equipment and windingsF forced circulation through cooling equipment (cooling pumps), natural

convection flow in windings (non-directed flow) D forced circulation through cooling equipment, directed from the cooling

equipment into at least the main windings Third letter: External cooling medium

A airW water

Fourth letter: Circulation mechanism for external cooling mediumN natural convectionF forced circulation (fans, pumps)

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 5: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Present DesignationsPresent DesignationsONANONANONAFONAF

ONAN/ONAF/ONAFONAN/ONAF/ONAFONAN/ONAF/OFAFONAN/ONAF/OFAF

ONAN/ODAFONAN/ODAFONAN/ODAF/ODAFONAN/ODAF/ODAF

OFAFOFAFOFWFOFWFODAFODAFODWFODWF

Previous DesignationsPrevious DesignationsOAOAFAFA

OA/FA/FAOA/FA/FAOA/FA/FOAOA/FA/FOA

OA/FOA*OA/FOA*OA/FOA*/FOA*OA/FOA*/FOA*

FOAFOAFOWFOWFOA*FOA*FOW*FOW*

* * Indicates Directed Oil Flow per Table 9, Note 2, 1993 revisionIndicates Directed Oil Flow per Table 9, Note 2, 1993 revision

Page 6: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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• Where can you find the cooling class information?• Nameplate• Outline Drawings• Etc.

• Where can you find the cooling class information?• Nameplate• Outline Drawings• Etc.

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 7: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Tolerances for lossesTolerances for lossesTolerances for losses

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

In IEEE Std. C57.12.00In IEEE Std. C57.12.00--1993 the statement reads, 1993 the statement reads, Unless otherwise specified, the losses represented by a test of Unless otherwise specified, the losses represented by a test of a a transformer(s) on a given order shall not exceed the specified ltransformer(s) on a given order shall not exceed the specified losses by osses by more than the percentages in the table below.more than the percentages in the table below.

The year 2000 revision includes the following statement:The year 2000 revision includes the following statement:

“Failure to meet the loss tolerances shall not warrant immediate“Failure to meet the loss tolerances shall not warrant immediate rejection rejection but shall lead to consultation between the purchaser and manufacbut shall lead to consultation between the purchaser and manufacturer turer about further investigation of possible causes and the consequenabout further investigation of possible causes and the consequences of the ces of the higher losses.”higher losses.”

The new standard provides guides on treating transformers with losses higher than tolerances given, 10% for No-load loss and 6% Total loss

Major Changes in C57.12.00-2000

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Major Changes in C57.12.00-2000Major Changes in C57.12.00-2000

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

This revision requires that the maximum (hottest spot) temperature rise be determined by calculation or testing. (5.11.1.1) (Next slide)

Prior editions of this standard required that the hottest spot temperature rise not exceed 80 ˚C, however, there was no approved test or calculation method for this required performance parameter.

Also published in 2000 is the IEEE Std 1538-2000

Guide for Hottest Spot Temperature Rise Determination in Liquid-Filled Transformers

Page 9: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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C57.12.00-2000, 5.11.1.1C57.12.00-2000, 5.11.1.1

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

a) Direct measurement during a thermal test in accordance with IEEE Std C57.12.90-1999. A sufficient number of direct reading sensors should be used at expected locations of the maximum temperature rise as indicated by prior testing or loss and heat transfer calculations.

b) Direct measurement on an exact duplicate transformer design per a).

c) Calculations of the temperatures throughout each active winding and all leads. The calculation method shall be based on fundamental loss and heat transfer principles and substantiated by tests on production or prototype transformers or windings.

The maximum (hottest-spot) winding temperature rise above ambient temperature shall be included in the test report with the other temperature rise data. A note shall indicate which of the above methods was used to determine the value.

Page 10: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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New Test Requirements Added in IEEE Standard C57.12.00-2000For Class II Power TransformersNew Test Requirements Added in IEEE Standard C57.12.00New Test Requirements Added in IEEE Standard C57.12.00--20002000For Class II Power TransformersFor Class II Power Transformers

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Core insulation resistance test (R)Core insulation resistance test (R)SingleSingle--phase excitation test (O)phase excitation test (O)LowLow--frequency test on auxiliary devices, control, and frequency test on auxiliary devices, control, and current transformer circuits (R)current transformer circuits (R)Operation test of all devices (R)Operation test of all devices (R)Switching impulse test applicable to transformers of 345 kV Switching impulse test applicable to transformers of 345 kV and higher ratings (R)and higher ratings (R)Dissolved gasses in oil analysis test (R)Dissolved gasses in oil analysis test (R)

Page 11: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major Changes in C57.12.90-1999Part II of IEEE Std C57.12.90-1993, IEEE Guide for

Short-Circuit Testing of Distribution and Power Transformers has been separated and NOT included in 1999 version

Major Changes in C57.12.90-1999Part II of IEEE Std C57.12.90-1993, IEEE Guide for

Short-Circuit Testing of Distribution and Power Transformers has been separated and NOT included in 1999 version

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

When approved, this part will be published as IEEE C57.133 Guide

Page 12: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major Changes in C57.12.90-1999New Clause 15, Certified Test Data, lists minimum

information required. This used to be in the Annex• New and expanded information on thermal performance data• Allows the user to gain required information to perform loading

calculations per the C57.91-1995 Loading guide

Major Changes in C57.12.90-1999New Clause 15, Certified Test Data, lists minimum

information required. This used to be in the Annex• New and expanded information on thermal performance data• Allows the user to gain required information to perform loading

calculations per the C57.91-1995 Loading guide

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 13: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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Major Changes in C57.12.90-1999• Corrected several errors on figures and equations for No-Load

Loss and Load Loss measurements, Clause 8 and 9• Published C57.123, IEEE Guide for Transformer Loss

Measurement in 2002• This guide will be forwarded to IEC for their adaptation as “Dual

Logo” standard

Major Changes in C57.12.90-1999• Corrected several errors on figures and equations for No-Load

Loss and Load Loss measurements, Clause 8 and 9• Published C57.123, IEEE Guide for Transformer Loss

Measurement in 2002• This guide will be forwarded to IEC for their adaptation as “Dual

Logo” standard

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 14: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major Changes in C57.12.90-1999In this standard’s revision all primary measurements are now shown in metric units with their corresponding English equivalent measurements in parenthesis

Major Changes in C57.12.90-1999In this standard’s revision all primary measurements are now shown in metric units with their corresponding English equivalent measurements in parenthesis

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Originally, IEEE Metrification Policy dictated that all IEEE documents will contain only metric dimensions eventually. Certain “Product” standards, such as C57.12.10, C57.12.20, C57.12.30 series of standards will retain English units to satisfy “safety” concerns

Page 15: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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One item of major concern, definition of “Thermal Duplicate” was to be included in the future release of the C57.12.00. This item has been put on “hold” due to lack of participation and interest

One item of major concern, definition of “Thermal Duplicate” was to be included in the future release of the C57.12.00. This item has been put on “hold” due to lack of participation and interest

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Requirement of an instruction manual along with the minimum information that should be included in the instruction manuals will be developed by the working group for future revision

Page 16: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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Notable Changes in other IEEE documentsC57.136-2000 IEEE Guide for Sound Level Abatement and

Determination for Liquid- Immersed Power Transformers and Shunt Reactors Rated Over 500 kVA

Sources of sound

Factors affecting sound levels in field operation

Factory-installed sound abatement methods

Field-installed sound abatement methods

Active sound cancellation

Useful sound level information

Estimation of far-field transformer sound levels (Annex)

Notable Changes in other IEEE documentsC57.136-2000 IEEE Guide for Sound Level Abatement and

Determination for Liquid- Immersed Power Transformers and Shunt Reactors Rated Over 500 kVA

Sources of sound

Factors affecting sound levels in field operation

Factory-installed sound abatement methods

Field-installed sound abatement methods

Active sound cancellation

Useful sound level information

Estimation of far-field transformer sound levels (Annex)

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 17: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Notable Changes in other IEEE documentsNotable Changes in other IEEE documents

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

IEEE C57.19.01-2000 IEEE Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings

• 200 kV BIL 34.5 kV 400/1200, 2000, 3000, 5000 amp

• 350 kV BIL 69 kV 400/1200, 2000, 3000 amp

• 650 kV BIL 138 kV 800/1200, 2000, 3000 amp

• 900 kV BIL 230 kV 800/1200, 2000, 3000 amp

• 1175 kV BIL 345 kV 800/1200, 2000, 3000 amp

• 1675 kV BIL 500 kV 800/1200, 2000, 3000 amp

• 2050 kV BIL 765 kV 800/1200, 2000 amp

Page 18: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Notable Changes in other IEEE documents

C57.127 IEEE Guide for the Detection of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers

Published in 2000Deals with Instrument, Test Procedure, and InterpretationLists many good references on Acoustic Emissions and PDProject Authorization Request (PAR) to revise approved in 2003Completion Due 12/31/2007

Notable Changes in other IEEE documents

C57.127 IEEE Guide for the Detection of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers

Published in 2000Deals with Instrument, Test Procedure, and InterpretationLists many good references on Acoustic Emissions and PDProject Authorization Request (PAR) to revise approved in 2003Completion Due 12/31/2007

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Notable Changes in other IEEE documentsC57.13.4 IEEE Trial-Use Standard of Performance and Test

Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and above

Published in 2003Coordination of clearance and test voltagesNeed input from the users of this standard for future revision, scheduled for 12/31/2008

Notable Changes in other IEEE documentsC57.13.4 IEEE Trial-Use Standard of Performance and Test

Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and above

Published in 2003Coordination of clearance and test voltagesNeed input from the users of this standard for future revision, scheduled for 12/31/2008

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 20: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Notable Changes in other IEEE documentsC57.135 IEEE Guide for the Application, Specification and Testing of

Phase-Shifting Transformers

Approved in 2001Application and theory of PSTsService conditionsRating, Construction, Control, etc.

Approved as IEEE/IEC Dual Logo StandardBeing revised for 12/31/2006 Completion

Notable Changes in other IEEE documentsC57.135 IEEE Guide for the Application, Specification and Testing of

Phase-Shifting Transformers

Approved in 2001Application and theory of PSTsService conditionsRating, Construction, Control, etc.

Approved as IEEE/IEC Dual Logo StandardBeing revised for 12/31/2006 Completion

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 21: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Notable Changes in other IEEE documentsC57.93 IEEE Guide for Installation of Liquid-Immersed Power Transformers

1995 Guide Consolidates and replacesIEEE C57.11-1980, Large TransformersIEEE C57.12-1980, Large TransformersIEEE C57.93-1958, Smaller Units

Clause 3 is for 501 kVA to 10 MVA, ONANClause 4 is for 10 MVA and above, or HV rating 69 kV or above

Extensive addition to Vacuum Treatment and Field DryingExtensive revisions / additions to Maintenance

Notable Changes in other IEEE documentsC57.93 IEEE Guide for Installation of Liquid-Immersed Power Transformers

1995 Guide Consolidates and replacesIEEE C57.11-1980, Large TransformersIEEE C57.12-1980, Large TransformersIEEE C57.93-1958, Smaller Units

Clause 3 is for 501 kVA to 10 MVA, ONANClause 4 is for 10 MVA and above, or HV rating 69 kV or above

Extensive addition to Vacuum Treatment and Field DryingExtensive revisions / additions to Maintenance

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 22: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major new documents being developed currentlyC57.12.00, Dielectric Test tables are being revised to clarify confusing requirements.Major new documents being developed currentlyC57.12.00, Dielectric Test tables are being revised to clarify confusing requirements.

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 23: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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Major new documents being developed currentlyC57.12.00, Dielectric Test tables are being revised to clarify confusing requirements.Major new documents being developed currentlyC57.12.00, Dielectric Test tables are being revised to clarify confusing requirements.

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 24: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major new documents being developed currentlyC57.12.36 Standard Requirements for Liquid-Immersed Distribution

Substation Transformers

Indoor/Outdoor distribution substation transformer112.5 through 10 000 kVA three-phase250 through 6667 kVA single-phaseHigh voltage 69 000 V and below, and a low voltage 34 500 V and belowCovers unique requirements for this type of transformers not covered by Distribution (C57.12.34 Pad-mounted) or Power (C57.12.10) TransformersCoordination with Switchgear could NOT reach consensus: Moved to Informative Annex

Target Completion date: 12/31/2006

Major new documents being developed currentlyC57.12.36 Standard Requirements for Liquid-Immersed Distribution

Substation Transformers

Indoor/Outdoor distribution substation transformer112.5 through 10 000 kVA three-phase250 through 6667 kVA single-phaseHigh voltage 69 000 V and below, and a low voltage 34 500 V and belowCovers unique requirements for this type of transformers not covered by Distribution (C57.12.34 Pad-mounted) or Power (C57.12.10) TransformersCoordination with Switchgear could NOT reach consensus: Moved to Informative Annex

Target Completion date: 12/31/2006

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyC57.12.10 Standard Requirements for Liquid-Immersed Power

Transformers

Major revision of the 1997 standard for Indoor/Outdoor Power TransformerCurrent standard covers up to 100 MVA and 230 kVRevised standard will cover ALL Power Transformers any MVA, and voltageLTC location from LV to either LV or HVModern components such as Monitoring devices and Electronic Communications

Target Completion date: 12/31/2006

Major new documents being developed currentlyC57.12.10 Standard Requirements for Liquid-Immersed Power

Transformers

Major revision of the 1997 standard for Indoor/Outdoor Power TransformerCurrent standard covers up to 100 MVA and 230 kVRevised standard will cover ALL Power Transformers any MVA, and voltageLTC location from LV to either LV or HVModern components such as Monitoring devices and Electronic Communications

Target Completion date: 12/31/2006

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC57.130 IEEE Trial-Use Guide for the Use of Dissolved Gas Analysis

During Factory Temperature Rise Tests for the Evaluation of Oil-Immersed Transformers and Reactors

ProceduresGas generation ratesEvaluation methods

First official ballot completed with many negativesOil volume vs. generation ratesApplicability to the distribution transformers

Being resolved by a small group of experts

Major new documents being developed currentlyPC57.130 IEEE Trial-Use Guide for the Use of Dissolved Gas Analysis

During Factory Temperature Rise Tests for the Evaluation of Oil-Immersed Transformers and Reactors

ProceduresGas generation ratesEvaluation methods

First official ballot completed with many negativesOil volume vs. generation ratesApplicability to the distribution transformers

Being resolved by a small group of experts

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC57.139 Guide for Dissolved Gas Analysis in Transformer

Load Tap Changers

Difficult to gain consensusTypeVintageApplication (Rating vs. Actual Load Current)Oil Condition (Filtered, Ventilated, etc.)

Scheduled Completion: 12/31/2007

Major new documents being developed currentlyPC57.139 Guide for Dissolved Gas Analysis in Transformer

Load Tap Changers

Difficult to gain consensusTypeVintageApplication (Rating vs. Actual Load Current)Oil Condition (Filtered, Ventilated, etc.)

Scheduled Completion: 12/31/2007

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC57.147 Guide for Acceptance and Maintenance of Natural

Ester Fluids in Transformers

Substantial progress being made with almost complete draftFluid tests and the significance of each testFluid compatibility with transformersHandling and evaluation of natural ester fluids for use in filling transformers at the installation siteEvaluation of natural ester fluids received in new equipment andafter filling apparatus on siteMaintenance of natural ester fluidsSafety and environmental care procedures

Scheduled Completion: 12/31/2007

Major new documents being developed currentlyPC57.147 Guide for Acceptance and Maintenance of Natural

Ester Fluids in Transformers

Substantial progress being made with almost complete draftFluid tests and the significance of each testFluid compatibility with transformersHandling and evaluation of natural ester fluids for use in filling transformers at the installation siteEvaluation of natural ester fluids received in new equipment andafter filling apparatus on siteMaintenance of natural ester fluidsSafety and environmental care procedures

Scheduled Completion: 12/31/2007

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC 57.104 Revision of IEEE Guide for the Interpretation of Gasses

Generated in Oil-Immersed Transformers

Major Changes from 1991 Guide (Latest published guide)Condition 1,2,3,4 ⇒Normal, Caution, WarningSignificantly lower C2H2 limit for “Normal” (<35 to <2)

Problems with several negativesApplicability to the distribution transformersDGA data from Accelerated Aging Tests suggests significantly higher limits should be acceptable

Scheduled Completion:12/31/2005

Major new documents being developed currentlyPC 57.104 Revision of IEEE Guide for the Interpretation of Gasses

Generated in Oil-Immersed Transformers

Major Changes from 1991 Guide (Latest published guide)Condition 1,2,3,4 ⇒Normal, Caution, WarningSignificantly lower C2H2 limit for “Normal” (<35 to <2)

Problems with several negativesApplicability to the distribution transformersDGA data from Accelerated Aging Tests suggests significantly higher limits should be acceptable

Scheduled Completion:12/31/2005

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyC 57.91 Revision of IEEE Guide for Loading Mineral-Oil-

Immersed Transformers

Major Improvements on Bubble Evolution, heavily depending on moisture contentLimit the Hot-Spot Temperature to 140 °C (Current limit 180 °C)Discuss potential risks of exceeding this limitThermal Model: Move the current Annex G to the main body and Clause 7 to the Annex

Ballot before the end of 2005Target Completion: 12/31/2007

Major new documents being developed currentlyC 57.91 Revision of IEEE Guide for Loading Mineral-Oil-

Immersed Transformers

Major Improvements on Bubble Evolution, heavily depending on moisture contentLimit the Hot-Spot Temperature to 140 °C (Current limit 180 °C)Discuss potential risks of exceeding this limitThermal Model: Move the current Annex G to the main body and Clause 7 to the Annex

Ballot before the end of 2005Target Completion: 12/31/2007

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC 57.142 A Guide to Describe the Occurrence and Mitigation of

Switching Transients Induced by Transformer-Breaker InteractionCharacteristics for Transformer, Source, Load, and Circuit BreakerSystem Voltage ResponseMitigation MethodsTwo Examples

First Ballot Completed: 85 Affirmative 24 Negatives, over 400 comments

Target Completion: 12/31/2006

Major new documents being developed currentlyPC 57.142 A Guide to Describe the Occurrence and Mitigation of

Switching Transients Induced by Transformer-Breaker InteractionCharacteristics for Transformer, Source, Load, and Circuit BreakerSystem Voltage ResponseMitigation MethodsTwo Examples

First Ballot Completed: 85 Affirmative 24 Negatives, over 400 comments

Target Completion: 12/31/2006

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC 57.149 Guide for the Application and Interpretation of

Frequency Response Analysis for Oil Immersed Transformers

Test ParametersMeasurement Parameters (test plan)Test RecordsAnalysis and Interpretation

Target Completion: 12/31/2008

Major new documents being developed currentlyPC 57.149 Guide for the Application and Interpretation of

Frequency Response Analysis for Oil Immersed Transformers

Test ParametersMeasurement Parameters (test plan)Test RecordsAnalysis and Interpretation

Target Completion: 12/31/2008

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

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Major new documents being developed currentlyPC 57.32 IEEE Standard Requirements, Terminology, and Testing

Procedures for Neutral Grounding Devices

Major Revision of the IEEE 32 (Sponsor changed from SPD to TR)Modernize Thermal Ratings, Insulation Classes, Temperature Limits, etc.Update Test and ConstructionTreat following devices:

ReactorsGround-Fault NeutralizersGrounding TransformersResistorsCapacitorsCombination Devices

Target Completion: 12/31/2006

Major new documents being developed currentlyPC 57.32 IEEE Standard Requirements, Terminology, and Testing

Procedures for Neutral Grounding Devices

Major Revision of the IEEE 32 (Sponsor changed from SPD to TR)Modernize Thermal Ratings, Insulation Classes, Temperature Limits, etc.Update Test and ConstructionTreat following devices:

ReactorsGround-Fault NeutralizersGrounding TransformersResistorsCapacitorsCombination Devices

Target Completion: 12/31/2006

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 34: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major new documents being developed currentlyPC 57.140 Evaluation and Reconditioning of Liquid Immersed Power

Transformers

Risk AssessmentDiagnostic TestsCondition AssessmentDegassing and Moisture Removal

Do you want to know the condition of your transformer?Should you consider extending the life of your transformer?

First official ballot: 9/12/2005 – 10/26/2005Target Completion: 12/31/2005

Major new documents being developed currentlyPC 57.140 Evaluation and Reconditioning of Liquid Immersed Power

Transformers

Risk AssessmentDiagnostic TestsCondition AssessmentDegassing and Moisture Removal

Do you want to know the condition of your transformer?Should you consider extending the life of your transformer?

First official ballot: 9/12/2005 – 10/26/2005Target Completion: 12/31/2005

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

0.00

20.00

40.00

60.00

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100.00

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1964

1967

1969

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Year of Failure

Failu

res

in G

VA

Page 35: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Major new documents being developed currentlyPC 57.143 Guide for Application for Monitoring Equipment to Liquid-

Immersed Transformers and Components

Surveillance Needs of High Voltage Transformers and AccessoriesTransformers, Bushings, LTC’s, etc.

Monitoring ParametersDGA, Moisture, PD, Temperatures, Insulation PF, Component Operations

Monitoring Systems and EquipmentHardware, Software, Data Analysis, Communication, Control, etc.

Benefits Direct/Strategic Benefits, Maintenance, Prevention of Failures, etc.

Target Completion: 12/31/2007

Major new documents being developed currentlyPC 57.143 Guide for Application for Monitoring Equipment to Liquid-

Immersed Transformers and Components

Surveillance Needs of High Voltage Transformers and AccessoriesTransformers, Bushings, LTC’s, etc.

Monitoring ParametersDGA, Moisture, PD, Temperatures, Insulation PF, Component Operations

Monitoring Systems and EquipmentHardware, Software, Data Analysis, Communication, Control, etc.

Benefits Direct/Strategic Benefits, Maintenance, Prevention of Failures, etc.

Target Completion: 12/31/2007

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 36: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

WAUKESHAELECTRICSYSTEMS

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Major new documents being developed currentlyPC 57.150 Guide for the Transportation of Transformers and Reactors

Rated 10,000 kVA or Larger

Just started with Scope and Purpose of the project defined (2004)Will include ALL modes of Transportation

Rail, Truck, Barge, Ship, even Air

This guide will provide information for minimizing the risk of damage and delays in the moving of power transformers and reactorsIt will have recommendations to minimize damage to transformers and reactors during rigging and transportation

Target Completion:12/31/2008

Major new documents being developed currentlyPC 57.150 Guide for the Transportation of Transformers and Reactors

Rated 10,000 kVA or Larger

Just started with Scope and Purpose of the project defined (2004)Will include ALL modes of Transportation

Rail, Truck, Barge, Ship, even Air

This guide will provide information for minimizing the risk of damage and delays in the moving of power transformers and reactorsIt will have recommendations to minimize damage to transformers and reactors during rigging and transportation

Target Completion:12/31/2008

ANSI/IEEE StandardsPower Transformer UpdatesANSI/IEEE StandardsPower Transformer Updates

Page 37: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Summary & ConclusionsSummary & Conclusions• Knowledge of the industry standards will help you

do your job better and easier• Key standards are continually updated• System reliability will be improved by learning and

implementing new trends• Join the IEEE Transformers Committee to learn

and participate – Great networking too!

• Knowledge of the industry standards will help you do your job better and easier

• Key standards are continually updated• System reliability will be improved by learning and

implementing new trends• Join the IEEE Transformers Committee to learn

and participate – Great networking too!

Page 38: Sim H Jin 2005 - 魏德曼 ... - weidmann-solutions.cn 2005 San Antonio... · ¾IEEE STD C57.12.00-2000 IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,

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Questions?

Thank You

Questions?

Thank You