Power Transformers – A Holistic Asset Management · PDF filePower Transformers – A...

©2013 Doble Engineering Company. All Rights Reserved

SMART GRID LATIN AMERICAN FÓRUM/2013

SMART GRID LATIN AMERICAN FÓRUM/2013

Dave Zabetakis

Power Transformers –A Holistic Asset Management

Approach

Power Transformers –A Holistic Asset Management

Approach

Doble Engineering Overview 2

• World leader in diagnostic test solutions for the electric power industry

• Helping customers improve safety, efficiency and reliability since 1920

• Subsidiary of ESCO Technologies Inc.

Doble Engineering CompanyDoble Engineering Company


Material & HVLaboratories

Cable & Switchgear

Diagnostics TransformerDiagnostics

Circuit BreakerDiagnostics

ProtectionDiagnostics

RotatingMachinery

Diagnostics

Doble Consulting & Testing Services

Doble Client Services & Application Engineering Teams

Supporting Over 5500 Customers in 110 CountriesSupporting Over 5500 Customers in 110 Countries


Market TrendsMarket Trends

MaintenanceRun to Failure/

Reactive

Scheduled / Interval

Maintenance

Real-Time Condition Based

Maintenance

Counter Based Maintenance

Condition Based Maintenance

Historically prevailing maintenance modelMarket

Trending

Rationale

Lower O&MMore cost effective for lower value assetsMore tenable where downstream impact

is limited

Higher reliabilityMore efficient Capex and O&MBetter asset life extension

Doble Engineering Overview 5July 2010 Confidential – Do Not Reproduce 5

Where Industry is going: ARMSWhere Industry is going: ARMS

•Shifting approaches to asset management and maintenanceRun to Failure/

Reactive

Scheduled / Interval

Maintenance

Real-Time Condition Based

Maintenance

Counter Based Maintenance

Condition Based Maintenance

Implementation Cost

O&M Cost

Reliability Improvement

Overlay of a maintenance schedule

based on age

Change maintenance schedule to be based

on events

Schedule asset performance data

collection - maintain asset based on

performance parameters

Continuously monitor asset performance and perform maintenance

when there is an indicator of a problem

Highest level of reliability issues

Less expensive than other methodologies

High O&M costs

Low Implementation Costs

Maintenance can introduce failure risk (human error)

High O&M costs Maximum Reliability Grid Visibility across

aging assets Efficient O&M Just in time / risk

assessment included

Rationale/ Issues

Better Reliability More efficient O&M

Most Utilities Doble ARMS


Substation Monitoring and Maintenance Value ChainSubstation Monitoring and Maintenance Value ChainSubstation Monitoring and Maintenance Value Chain

Value Added Services

Data Management and Communications

Monitoring Devices/ Instruments

Applications

Products and

Services

LimitingConstraints

Power system protection Circuit breaker diagnostics

Partial discharge detection

Protection diagnosis

Sweep frequency response analysis

Power system measurement Continuous online

diagnostics

Surge arresters monitoring

Transformer diagnosis Insulation analysis

Transformer diagnosis

Oil / materials analysis insulation analysis

Protocols Data collectionData storage, presentation and

access managementCommunications connectivity,

security and network management

Offline testing diagnosticsAsset management systems Condition based maintenance and

monitoringAdvanced approaches including risk

based maintenance analysis and just in time maintenance modeling

Product trainingMaterials lab testing servicesKnowledge management and

facilitation Engineering services

Design and configuration assessment

Testing services and diagnostics

Expert consultations and interpretation

Upfront implementation costs may make initial CAPEX for real-time CBM devices untenable for lower cost assets

Communications can not be assumed

Limited awareness of data valueIntegration difficulty

Limited understanding of how to solve integration requirements

Disparate stakeholders limit ability to focus on using data strategically

This space is very competitive as instrument-makers, consulting firms, and industry associations participate in the value chain

Trends

Monitoring and diagnostic devices are moving towards more automated analytics

Relay/IED devices are increasing level of analytics and breadth of communications capabilities

Smart grid trend and funding is facilitating automation and communications deployment

There is a concerted push to use analytics to prolong the life of assets and save on catastrophic asset failures

Also focused on reducing O&M costs

The aging workforce and internal knowledge loss is prompting utilities to outsource many of the maintenance and testing capabilities that were once done in-house


What Are We Trying to AchieveWhat Are We Trying to Achieve


ASSET MANAGEMENTASSET MANAGEMENT

•CBM offers a number of areas of benefit to utilities

Lost revenue associated with undelivered power caused by catastrophic failure of assets

The life of transformers can be extended improving utilities capital efficiency

Life Extension/ Cost of Capital

Repair Time Reduction

Overtime Savings

Description

Pre-emptive repairs with diagnostic information are less time intensive than ad-hoc repairs on failed transformers

Maintenance (Labor w/overtime) costs associated with repairing failing assets on an ad-hoc basis

Lost Revenue

Benefits


Large IOU Failure History, 1988 – 2008 (96 failures)

What are the most common transformer failure modes?What are the most common transformer failure modes?


Failure Modes… internalFailure Modes… internal


Failure Modes… externalFailure Modes… external

20048.8 Strikes per square mile

Sub #15 : A squirrel contacted the bushing terminals on the 1 Transformer, destroying the bushing and operating A and B phase fuses.


Motivations:-Real time information-Improve understanding of ‘true’ asset condition-Support asset related decisions – short and long term

Expected benefits-Reliability improvement

- can reduce the risk of an un-scheduled outage.-Failure avoidance costs:

- Equipment replacement costs- Safety & Environmental penalties and fines- O & M Costs

-Capital investment deferment-O&M cost reduction

Condition Monitoring: Motivations & BenefitsCondition Monitoring: Motivations & Benefits


• Which failure modes can we detect?- Are there particular families or types to target?

• Are available monitoring technologies cost effective?- Do we have examples of ‘saves’?

• What are the true implementation and operational costs?- Consumables, connections etc

• Will monitoring technologies reduce the failure rate?

Business Case JustificationBusiness Case Justification


Monitoring:

To Name But a Few Online Measurements…To Name But a Few Online Measurements…

Partial Discharge / RFI

Moisture

Geomagnetic Induced Currents

Oil Oil Analysis

Frequency Response Power Factor

Bushing Monitoring


Complete Diagnostic SolutionsComplete Diagnostic Solutions


Online Data is Only Part of the PictureOnline Data is Only Part of the Picture


What do utilities need?What do utilities need?

The future is likely to lead us1. Consolidation of diagnostics- multiple vendor systems fed into a common integrator-

leading to only one data stream.2. Rationalization of communications- hard wired, wireless, fiber etc3. A need to be able to deal with many protocols- IEC61850, DNP3, Modbus etc4. The ability to interplay SCADA data in CIM with such diagnostic data

Plus1. Automated analyses to trigger alerts2. The ability to assess meaning of alerts through easy access databases3. Expertise to interpret diagnostics in terms of equipment engineering

dobleARMS™


• Criticality– What happens if there is an unplanned failure?

• Health– What are the chances of failure?

• Risk = Criticality * health– Low risk - No unusual deterioration– Increased risk – possible early life failure– Assess risk - deterioration identified and progressing– Manage risk – identify intervention

• Maintenance is the management of deterioration

Asset Management ViewAsset Management View


• Look at Assets as interrelated Systems• Create Failure Categories• Focus on “Failure Methods/Modes”• Apply Relevance Weighting at all levels• No data-Self Healing• Goal: Asset Health Risk and dSCORE

Relevance


Reporting – Business IntelligenceReporting – Business Intelligence

Summary Reporting•Fleet•Region•Location•Risk•Rankings•Capital•Back Office – Testing•Statistics•Alerts - Notifications

Doble Comprehensive Analysis• Artificial Intelligence

• Power of the dobleDATABASE™

• Unique Failure Mode & Effect Analysis predictive system

• Fully configurable and customizable

Operational Awareness• SCADA

• DNP3

• IEC61850

Instant Risk Updates• Reliability

• Availability

• Customer Impact

• Environmental Impact

• Personnel Safety

• Financial

• Instant Revenue


Assessment

application dAppsAssessment

application dApps

Assessment

FMEA ScoringAssessment

FMEA Scoring

©2013 Doble Engineering Company. All Rights Reserved

Asset Management presents challenges, but great value can be found: Online Monitoring

Offline Diagnostics

Actionable Intelligence

Monitoring may create vast amount of data for analysis

Need a coordinated analytics system At the asset, at the station, across families

Great opportunity to realize a truly intelligent grid

Conclusions – Why Bother?

Proprietary and Confidential ©2013 Doble Engineering Company. All Rights Reserved

Coming together is a beginning; Coming together is a beginning; keeping together is progress; working keeping together is progress; working

together is success. together is success.

Henry Ford

Proprietary and Confidential ©2013 Doble Engineering Company. All Rights Reserved

OBRIGADO

David Zabetakis, PresidentDoble Engineering

[email protected]

Rua Correia Dias, 113 – ParaisoSao Paulo – SP – Brasil

CEP. 04104-000

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