Rogério Piva, Agosto de 2015 – Evento Automation & Power … · · 2017-08-28©ABB Group...
Transcript of Rogério Piva, Agosto de 2015 – Evento Automation & Power … · · 2017-08-28©ABB Group...
© ABB GroupSeptember 4, 2015 | Slide 1
Substation Asset HealthPrioritizing investments in substationretrofit
Rogério Piva, Agosto de 2015 – Evento Automation & Power World Brasil
© ABB
Optimal Solutions for Aging SubstationsContent
Methodology for selecting optimal solutions for agingsubstations§ Substation Risk Analysis
§ Substation condition assessment§ Reliability model and analysis§ Reliability Centered Maintenance – RCM
§ Definition of Potential Alternative Solutions§ Identify technical solutions§ Selecting design comparison criteria
§ Alternative Solutions - Reliability & Economics Analysis§ Reliability models§ Reliability analysis§ LifeStretch™ results analysis
§ Conclusions§ Selecting an optimal solution
© ABB04 September 2015 | Slide 3
Introduction to Substation LifeStretchTM
Asset management challenge
Our goal is to enable you to select your optimal solution for each case.
Challenge lies on assessing all relevant factors to consider for the decisionmaking
Both when the substation lifecycle is reaching the design limit and when there is aneed to extend the functionality of the asset, multiple technical solutions can be
considered.
© ABB04 September 2015 | Slide 4
Introduction to Substation LifeStretchTM
Asset management challengeSS Lifetime management is a balance act where different factors needs to be consideredSS Lifetime management is a balance act where different factors needs to be considered
o New expected lifetime
o Health and Safetyaspects
o Functional specification
o Remote monitoringfeatures
o …
o Substation risk profile
o Expected mean time between failures
o Expected mean time to repair
o Unplanned outages duration
o Unplanned outages frequency
o Substation availability in the different pointsof connection.
o Initial investment
o Substation Lifecyclecost
o Cost of powerinterruption
o Operation andMaintenance cost
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Substation AssessmentDeferred maintenance is a global phenomenon
§ Life goes on, but expected lifetime is not likely to be reached...
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Substation AssessmentDetermining which substation to prioritize
If focus is on condition – of course the substation from 1980 will be prioritizedBut, condition-based assessment alone does not provide a completely accurate picture
The substation’s importance in the network, or the consequences of a failure, must beidentified as wellABB’s assessment model is based on reliability centered maintenance (RCM) principles.
1980 2001
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Substation AssessmentEach component condition is assessed individually
§ The assessment is performed in closecooperation with the substation owner
No power interruption is required forthis assessment
§ Basic component data is confirmed§ Identification number§ Manufacturer, type, serial number etc.§ Year of manufacture
§ Tailored assessment criteria for differentcomponent types
§ Assessment criteria elaborated to ensuremulti-angle analysis:§ Component-specific point of view§ Component as part of the system§ User-specific operational feedback§ ABB’s global experience
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Substation AssessmentAll components plotted in a risk matrix
Condition is assessed and is based on:Personal safety§ Application & design§ Environment§ Number of operations and short circuits§ Operational experience§ Maintenance program§ Availability of spare parts and expertise§ Others
Importance is calculated based onInjuries of personnel§ Environmental impact§ Criticality of loads§ Economical factors for the user e.g. loss of
production and consequential damages.§ Others
Green – NormalSituation undercontrol
Yellow – Watch outActions requiredwithin certain time
Red – UrgentActions required
urgently
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Maintenance Considerations Sequence of actions
Condition basedMaintenance
(CBM)Considers
condition only
Conditions c1-c6 determinethe sequence of actions:
§ Replacement of 1§ Replacement of 4§ Replacement of 2§ Maintenance on 3§ Maintenance on 6§ Inspection on 5
ReliabilityCentered
Maintenance(RCM)
Considers the riski.e. both Conditionand Importance.
Risks r1-r6 determine thesequence of actions:
§ Replacement of 6§ Maintenance of 4§ Maintenance on 5§ Maintenance on 2§ Inspection on 3§ Inspection on 1 (or fault
correction due to very lowImportance)
Substation AssessmentPrioritized actions based on RCM
(Con
ditio
n)
Good
Poor
1
2
4
3 6
5
c1 c2 c3 c4 c5 c6
Red=Replacement
Yellow=Maintenance
Green=Inspection
(Importance)Low High
1
2
4
3 6
5
(Con
ditio
n)
Good
Poor
r4
r1
r2
r3
r6
r5
© ABB
Substation AssessmentFacilitates alternative investment decisions
§Recommen-dations
SubstationComponentsAssessment
Recommen-dations
AdditionalComponentDiagnostics
LifeStretch™Assessment
Repair and/orReplacement
Maintenance
§ A structured process to define investment alternatives on the basis ofReliability Centered Maintenance philosophy
© ABB
Substation AssessmentSummary
Service offerings derived from same commonrisk analysis platform:§ Condition assessment of all components involved is
performed on site – no outage is required
§ Importance calculation for all components throughopen source reliability statistics1) – consequentialsystem impact from a failure is defined
1) From Cigré, IEEE, CEA, local data
Situation & recommendationsReport
Site Inspection(Condition Assessment) Scope and strategy Proposal
Comparison of alternatives
Risk analysis
Substation Assessment
Report
Maintenance Contract
Substation Reliability and Economic Evaluation
© ABB
Substation LifeStretch™ AnalysisReliability and Economic Optimization
Alternatives technical benchmarking
Comparison criteria based on differentobjectives:
• Load feeders outage frequency &duration
• Due to equipment malfunction• Due to scheduled maintenance
• Substation alternative life cycle cost• Initial investment• O&M cost• Interruption cost
• …
Guided process
Perform reliability and economic analysis toidentify an optimal investment solution toimprove substation reliability
© ABB
Substation LifeStretch™ AnalysisReliability Assessment & Analysis - RCM§ Calculating reliability at any point of the
substation
§ Ranking components contribution toreliability – used also to evaluate theImportance in the Assessment phase
§ for the entire substation
§ for specific load feeder
§ Using different criteria for componentsranking:
§ Outage Frequency (OF)
§ Outage Duration (OD)
§ Expected Energy Not Supplied (EENS)
§ Economic Impact (ECOST)
AIS ring bus
GIS ring bus
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Substation LifeStretch™ AnalysisIdentifying potential alternatives
Model eachalternative by:
Perform calculations& analysis for each
substation alternative
Propose SubstationSolutions/Alternatives
considering:
O&M Cost
Investment Cost
Reliability resultsand analysis for theexisting substation
Specific customerrequirements and
preferences
Cost of powerinterruption
Total Life CycleCost for the project
Consider lifetime ofdifferent alternatives
Typically differentalternatives will
have different lifetime duration
© ABB
Substation LifeStretch™Best practice example
§ Identify the optimal investment solution based on thesubstation risk assessment and LifeStretch™ approach
§ Risk assessment of an aging 230kV substation based onanalysis of the components’ condition and their impacton substation reliability
§ Build reliability model for the existing substationswitchyard
§ Propose different options/alternatives to improvereliability and extend substation life
§ Select optimal investment solution based on reliabilityand life cycle cost analysis
§ The technical analysis performed in collaboration withABB allows the customer to identify the optimalinvestment solution
Purpose
TechnicalSolution
Description
Benefits
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Substation LifeStretch™ OptionsProposed alternatives
Option Replace or Upgrade Equipment
1 Replace existing circuit breakersand all disconnect switches
new state of the art dead tankcircuit breakers
1.1 Replace existing circuit breakersnew state of the art dead tankcircuit breakers and keepingthe old disconnect switches
2 Upgrade the operating mechanismsfor all circuit breakers
keep the rest of theswitchyard the same
3Upgrade the operating mechanismsand replacing the interrupters for allcircuit breakers
keep the rest of theswitchyard the same
4Upgrade the operating mechanismsand refurbish existing interruptersfor all circuit breakers
keep the rest of theswitchyard the same
Based on the assessment and reliability evaluation for theover 40 year old 230 kV substation, the following options wereproposed together with the customer:
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Substation LifeStretch™ AnalysisReliability results
OF – Outage FrequencyOD – Outage DurationMTBF – Mean Time Between Failure
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Substation LifeStretch™ AnalysisAlternatives colored by reliability
Original Configuration
Option 1 – New CBs & DS
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Substation LifeStretch™ Options - ConclusionsBest practice example
Option Replace or Upgrade Equipment Conclusion
1Replace existing circuitbreakers and alldisconnect switches
new state of the art deadtank circuit breakers
Second best solution based on the calculatedLCC§ the higher initial investments here are
compensated by the lower failure cost andservice disruption cost
1.1 Replace existing circuitbreakers
new state of the art deadtank circuit breakers andkeeping the old disconnectswitches
Best solution according to the calculated LCC§ this option cannot last for another 30 years,
i.e., with over 70 years life for the disconnectswitches
2Upgrade the operatingmechanisms for all circuitbreakers
keep the rest of theswitchyard the same
Third lowest LCC§ this option cannot last for another 30 years
with old interrupter and disconnect switches
3
Upgrade the operatingmechanisms and replacingthe interrupters for allcircuit breakers
keep the rest of theswitchyard the same
Worst performers based on the calculated LCCdue to the higher disruption and failure costs§ there is no assurance that the old circuit
breakers and disconnect switches will lastfor another 30 years after replacing theoperating mechanism and interrupter
4
Upgrade the operatingmechanisms and refurbishexisting interrupters for allcircuit breakers
keep the rest of theswitchyard the same
© ABB
Substation LifeStretchTM
Estimated execution schedule
1 - 3 weeksKick-off Workshop
Requirements analysis
Substation risk analysis
Substation Assessment
1 - 3 weeksFinal Workshop
Conclusions
Selecting the optimal solution
Action plan agreement
WorkshopObjective
ABB tasksprior to
workshop
Workshopdeliverables
Kick-Off workshop
§ Understanding project specific needs andcircumstances
§ Evaluate existing condition of the substation
§ Info collection for modelling the substation
§ LifeStretch team members definition§ Project requirements agreements§ Site condition assessment
Technical workshop
§ Agree the bases of the reliability staudy tobe performed
§ Substation Risk profile calculation§ High level design of potential alternatives to
discuss during workshop
§ Agreement on the technical alternatives tostudy
§ Agreement on the comparison criteria to beused to identify the optimal solution
Final workshop
§ Achieve a clear understanding of the prosand cons of the solutions analyzed
§ Provide Draft LifeStretch report to discussduring workshop.
§ Comprehensive presentation of LifeStretchresults.
§ Agreed LifeStretch report including clearrecommendation based on the data of thestudy to facilitate the decision makingprocess
© ABB04 September 2015 | Slide 23
Substation LifeStretchTM
Conclusions
ABB is your partner to make the right investment choice.
Tailored analysis of actual status and technical alternatives in order to helpyou to identify your optimal solution.
Substation LifeStretch Methodology is based on a collaboration process to enableyou to identify the optimal solution to extend your asset lifecycle or functionality.
© ABB
Informações
Caso nescessite de informações adicionais, favor contactar:
CONTATO Rogério Piva
FONE 11 9 8354 6376
E-MAIL [email protected]
OBRIGADO PELA PRESENÇA !!!!