3 Background: Asset Management Electric networks are capital-intensive businesses.A high level of investment is required to provide the asset and infrastructure needed for the system and for the equipment required to sustain and maintain it in a safe and reliable condition.Asset management is an all-embracing term used to describe the activities undertaken through the life of the asset to achieve stated business objectives.
4 Asset Management: Balancing Critical Perspectives Asset management includes a diverse range of actions and perspectives that should work synchronouslyFinancialSafetyRegulatory4
5 Industry Trends and Needs Aging infrastructure for many utilitiesMaintaining or improving reliability levelsQuality of material and equipment being purchasedCash and budget pressuresRegulatory uncertainty or transitionsTransformational technologies such as storage, EV’s, etc.Mergers and acquisitionsSmart Grid – sensors, AMI, communications, back end integration, etc.
8 KEMA Asset Management Tools for Optimization Transmission Specific ToolOptimizedAsset ManagementABMAMPCASCADE&CAREDRAKETransmission Specific Tool8
9 Equipment Failure and Bathtub Curve If an equipment survives its early phase (infant mortality phase), it is likely that there is no manufacturing defectDuring the useful life period, the equipment’s failure rate tend to be constantAs equipment ends its useful life and enters in to wear out period, its failure rate tends to increase, often exponentially9
12 Cascade – CARE: Asset Maintenance CASCADE– Data repository and analysis tools to evaluate maintenance strategies, coupled with a system to ensure the proper execution of those strategies. The output can be used for real time response to emerging problems or the development of long term plans.CARE interfaces with CASCADE and with database that stores operational data (SCADA, EMS etc.). Provides near-real time operational information.Benefits – Implementation of optimal maintenance programs
13 Maintenance Optimization The right resources at the right timeFocus20%100%Source – Department of Mechanical Engineering Tokyo13
14 Did not interrupt fault current Pitfalls of Time Based MaintenanceFail to prevent functional failureMaintenanceComplete 2010Breaker “B”MaintenanceScheduled 2013Reduced capabilitiesFunctional FailureDid not interrupt fault currentBreaker “A”Interrupts numerous high current faultsP-F IntervalTimeTwo Breakers – Time Based Maintenance • 3 year cycle
15 Cascade – CARE: Asset Maintenance Raw Data(diagnostic tests, on-line monitoring & operational data)Data CollectionRaw data and/or condition codesEmpiricalKnowledgeAnalysisvia algorithmsCARECASCADEAlertsModify sampling rate,further diagnostic testing,data mining, install monitoringCorrective Action:Remove from serviceLearnFrom Corrective Action and data analysisFeedbackLoop15
16 Load exceeds 80% of nameplate Cascade: Asset Maintenance ExampleNotify subject matter expertNo change in sampling rateInputOutputC2H4 has exceeded 50PPM2/27/04OutputNotify subject matter expertSampling rate set to 6 monthsInputC2H4 has exceeded 100 PPMCO has exceed 700 PPM11/01/05Notify subject matter expertRequest operations to reduce loadInitiate data mining exerciseOutputInputRatio of C02/C0 is < 5Load exceeds 80% of nameplate6/16/06TOACASCADE16
17 Data mining has revealed transformer failed factory DGA Cascade: Asset Maintenance ExampleHeightened awareness await next DGA resultsData mining has revealed transformer failed factory DGAInputOutputH2 has exceeded 100 PPMCH4 has exceeded 120 PPMC2H6 has exceeded 65 PPMNotify subject matter expertSampling rate set to 2 monthsNow that thresholds exceeded ratios will be automatically calculatedOutputInput12/27/05TOACASCADE17
18 Cascade: Asset Maintenance Example Notify subject matter expertResample in 10 days to calculate generation rateOutputInputRatio of C2H4/C2H6 >1<4 Ratio CH4/H2 <107/02/06Notify subject matter expertPlan to install mobile and move unit to repair shopGeneration rate of C2H4 exceeds 0.5% per dayOutputInput2/17/06TOACASCADE18
19 CHR Relative RankingA one time overall assessment of equipment condition at a specific time based on selected parameters to determine CHR number (initial) (historical data)Criticality = location determines safety, environmental, financial, and regulatory consequences.Health = probability of failure based on manufacture quality, operational stress, results of predictive maintenance tests (historical)Risk = Health (probability) x Criticality (consequence)
20 Cascade: Asset Maintenance Example Transformer Watch List View20
21 Asset Data (Non-real Time) Asset Health Condition: CASCADE & CAREAsset Data (Non-real Time)CASCADEAsset Health ReportCARENearReal TimeAsset ConditionDataPiInspection andTest ResultsDGA, DTA, TOA, Infra Red, Inspection Data21
23 Overall Asset Management Services Asset management strategy and transformationSubstation AutomationMajor equipment remaining life assessmentMajor asset failure analysisAsset Spare StrategyEmergency response planning and auditSmart Grid technology and impact of EV'sWind and solar renewable integrationPAS 55 evaluationPower Quality
24 Asset Management Transformation Industry Concern: Aging infrastructure, ability to predict future performance and budgeting needsKEMA Services:Failure forecasting for asset families to 1) predict replacement needs 2) spares 3) replacement optionsCurrent maintenance and alternative maintenance options and their impact on replacement forecasts.Actionable asset plans developed to encompass the current and future state for each asset family.Recent Client: HECO – utility serving in Hawaii
25 Substation Transformer Management Industry Concern: Transformers are non-uniformly loadedKEMA Services:Analyze transformer load data (historical loading)Current maintenance PlanActionable asset plans developed to encompass the current and future state for transformersRecent Client: WMECO25
26 Remaining Life Assessment Industry Concern: How much life is remaining in major assets that are critical for reliability or have significant safety and financial implications upon failureKEMA Services:Testing of oil and other components to determine condition and predict life.Analysis of history to predict condition.Recommendations on replacement or life extension strategies.Recent Client: ELMAR (Aruba) station transformer fleet assessment
27 Impact of EV’sIndustry Concern: Process to serve EV’s, system impact, charging station & rate strategyKEMA Services:Design new service processDevelop various market penetration scenarios and local impacts down to distribution transformerDevelop ongoing planning tools for EV’sDesign and support of charging station rolloutRecent Client: LADWP on development of new service process, strategy, charging station rollout, etc.
28 Renewable Integration Industry Concern: Impact of renewables on transmission (wind) and distribution (solar) stability, voltage and power qualityKEMA Services:Renewable interconnection studies for wind on transmissionModeling impact of high penetration solar on distribution circuit voltage regulationMitigation studies for renewablesRecent Client: California solar initiative studies.
29 Advanced Technology Evaluation Industry Concern: What technologies might transform the electric utility industry in terms of load or changing how capital is deployedKEMA Services:Comprehensive assessment of various technologies now and in various time horizonsImpact of technologies on load & financial performanceRecent Client: Strategic studies done for senior leadership team of various utilities (APS) that are confidential
30 Emergency Response Planning Industry Concern: Having an emergency planning process that can withstand regulatory scrutiny in an auditKEMA Services:Comprehensive resign of process and plans to respond to emergenciesConcurrent audit of approach and nature of damage during storm restorationRecent Client: Several utilities in Florida and Texas subject to hurricanes
31 A Select List of Clients ExistingHECOTECOEnergisaToronto HydroLADWPABRADEELightAPSCEATINew/PotentialDuke/Progress EnergyWestar EnergyAMERENCPS EnergyNYPANortheast UtilitiesWMECOAUSGRIDIdaho PowerNV Energy
34 PAS 55Industry Concern: Having an objective standard to compare internal asset management with best practicesKEMA Services:Assessment of existing asset management against PAS 55 standards.PAS 55 implementation planRecent Client: ENDESA assessment of existing asset management against PAS 55
35 Asset Failure Analysis Industry Concern: Understanding the cause of a failure to prevent future failures and defense in regulatory investigations.KEMA Services:Forensic analysis of failure using in field observations and laboratory testing.Support of claims against manufacturersRecent Client: Multiple clients across the world but these are normally confidential projects.
36 Some New Offerings of Asset Management Services Grid Hardening and ResiliencyAsset Life Cycle Cost ManagementEquipment Spare Strategy
37 Best Practice Developments (Examples of Reliability) Focus on worst performing circuit mitigation for three yearsThe 15% worst performing circuits often cause half of overall customer outageEven if reliability average is improved, focus on worst performing pockets to reduce customer complaintsDramatically improve the quality of information provided to customers during an outage to reduce complaintsPriorities1st control customer complaints2nd improve worst performing circuits3rd improve worst performing customer pockets