ieee switchgear committee meeting · 2013. 11. 19. · 22/09/2013 2 ieee switchgear committee...

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IEEE Switchgear Committee

Meeting Condition Monitoring Panel

Pittsburgh, PA November 11th, 1999

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Condition Monitoring and POW Control of Power

Delivery Apparatus

Partners in:

Cost Reduction

Life Extension Power Quality

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OVERVIEW • Installed Base and Segmentation • ROI Methodologies • Case Studies • Financial Improvements • New Designs and Standards

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Condition Monitoring Installed Base

20000

1000 1000500 500

50

XFOs

XFOs + LTC CBs Other

apparatusBatteries Relays

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Circuit Breaker Condition Monitoring

Installed Base 900

100

New

Retrofit

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Circuit Breaker POW Control Installed Base

Retrofit25%

New75%

300

900

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Condition Monitoring Segmentation

Single function59%

Multi function closed

29%

Open architecture12%

Diagnostic Expert Systems

0%

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Circuit Breaker POW Control Segmentation

Cap Bank40%

Reactor20%

Lines2%

XFOs38%

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ROI Methodologies

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ROI Methodologies

Predicted Savings Predicted ROI = Budgeted Investments

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ROI Methodologies

Predicted Savings = Maintenance + Repair + Replacement (w/o CM) - Maintenance + Repair + Replacement (with CM) MRR (w/o CM) = [Budgeted Maintenance + Historical (R+R)] x Years

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ROI Methodologies

BI = CMS cost + Engineering + Site costs + Response costs

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ROI Methodologies

Budgeted Investment ($)

Predicted Payback = Years Predicted Savings ($ / year)

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ROI Methodologies

Budgeted Investment ($)

CM Efficacy Requirement = % Predicted MRR (w/o CM)

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ROI Methodologies Breaker Retrofit

BENEFITS ABPB¬

COSTS Perbreaker

Persubstation

Per group

Reduction routine inspections costs Monitoring system hardware and softwareReduction overhaul costs (postponed andoptimized)

Breaker specific engineering

Reduction in failure costs Components + cabling installation Benefit Index = Remote communication link installationEffectiveness Index = Sensor + controller sub-system commissioning PAFS - Sensor + controller sub-system maintenanceReduction in data analysis costs Substation staff trainingReduction in spare parts cost Substation spare partsIncrease of revenues Central controller hardware and softwareReduction in capital and/or expense costs ofequipment

Central controller installation

Reduction in training costs Central controller software configuration andcommissioning

Reduction in insurance premiums Breaker group generic engineeringReduction in environmental protection andclean-up costs

Breaker group expert system software

Reduction in designed redundancy costs TrainingSpare parts

TOTAL BENEFITS COST SUBTOTALS

¬ Annualized Benefit Per Breaker - Projected Annual equipment Failure expenditure Saving

Presenter

Presentation Notes

Here is a sample worksheet used but please don't try to read it here, it's in the paper.

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ROI Methodologies

• Cu = Unscheduled renewal • Cs = Scheduled renewal • X = Cu / Cs • T = Period of optimal renewal • Cd = Diagnostics • R(t)= Reliability of equipment • Rd = Reliability of detection

© Andtek, Inc.

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ROI Methodologies

∞

Cd ∫ R(t) dt 0 < [R(T)(1-X) + X] -1 T

Cs ∫ R(t) dt 0

© Andtek, Inc

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ROI Methodologies

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Cd/Cs

Cu/Cs

Rd=1

Rd=0.9

© Andtek, Inc.

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ROI Methodologies POW Control

• Case by case

• New vs retrofit

• POW vs Conventional

• Measurable + Qualitative

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ROI Methodologies Conventional designs

• Purchase + installation +

commissionning

• Routine testing

• Preventive maintenance

• Failure triggered replacement costs

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ROI Methodologies

POW Control System

COSTS

– EPIC

– Characteristics

– Other devices

BENEFITS – Savings

– Security

– Power Quality

– Life extension

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Load current No damage

Fault current Catastrophic

Savings $ 400,000

Monitoring Case Study#1

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Locked piston Explosion

Collateral damage CT

Savings $630,000

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Pressure drop signature Stuck moving contact Fault current Catastrophic Savings $175,000

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POW Case Study#1 • CEZ • GSU transformers • End of life condition • Historical severe inrush conditions • Controlled opening to condition

remanent flux • Controlled closing to limit inrush below

30% of rated current • Deferred purchase > 5 mio $

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POW Case Study#2

• 25 kV distribution daily Cap bank switching

• O/V trips subway DC supply

• Some passenger cars in tunnels

• Public opinion of Transit Authority and Utility suffers

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TRENDS

Installed costs

Performance & benefits

21st Century Smart Substation

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Installed Cost Reductions

Cabling

CM + POW

2.4GHz Comms

Inter-operability

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Diagnostic Expert System DATA INFORMATION KNOWLEDGE ACTION

Presenter

Presentation Notes

Models of circuit breaker operational behaviour , including aging and failure mode profiles, have been developped and validated over the years. The progression from primary data to operational actions has historically depended on discrete snapshots in time of the breaker aging process. The time appropriate and correct processing of the primary data isnot always economically feasible. The transformation into information, knowledge and action programs is further hampered by the loss of expertise through attrition.

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Diagnostics Expert System • Customized software shell to ensure

optimal performance and flexibility • Device specific rules • Combinatorial algorithms • User “tool box” • Simulation and field tested • Import / Exportability with other

platforms

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Diagnostics Expert System

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IEC Interference Immunity

• Electrostatic discharge (ESD) IEC1000-4-2 • Electromagnetic compatibility IEC1000-4-3 • Damped oscillating magnetic fields IEC1000-4-10 • High power, damped oscillations IEC1000-4-12 • Rapid transients (EFT) IEC1000-4-4 • High frequency current, modulated amplitude

IEC1000-4-6 • Line conducted transients IEC1000-4-16 • Magnetic fields with energy frequencies

IEC1000-4-8, IEC SC 77A

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IEC Emitted Interference

• Main ac current : • Harmonic oscillation currents and

voltage oscillations IEC1000-3-2, IEC1000-3-3

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IEC Climatic Requirements

• Cold temperature IEC 68-2-1 • Dry heat IEC 68-2-2 • Damp heat IEC 68-2-3 • Temperature cycling IEC 68-2-14

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IEC Mechanical requirements • IEC 68-2-6 • IEC 68-2-27 • IEC 68-2-29 • IEC 68-2-59 • IEC 536 • IEC 529 IP 54 • IEC 707 DC Supply Voltages IEC 694

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IEC

• IEC 77/215 EMC Immunity for power stations

and substation environments

• IEC 61850-1 Communication Networks and

Systems in Substations

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CIGRE • WG 13.07 : Controlled Switching

– Tutorial ( 1996) – Application Guide (1998) – Studies, Specifications and Tests

(1999) • WG 13.09 : Condition Monitoring

– Application Guide (2000) • WG 13.10 : Asset Management

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THANKS YOU FOR YOUR ATTENTION

3605 Isabelle Brossard, QC Canada, J4Y 2R2 Tel: 1.450.444.3001 Fax: 1.450.444.3009 Email : [email protected] Web : www.snemo.com

ieee switchgear committee meeting · 2013. 11. 19. · 22/09/2013 2 ieee switchgear committee...

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