asset management august 19-21, 2015 minneapolis, mn 2015 transmission & distribution...
TRANSCRIPT
Asset Management
August 19-21, 2015
Minneapolis, MN
2015 Transmission & Distribution BenchmarkingCommunity Insights Conference
Develop System Strategy
Develop and Approve Asset Plans
Project/Portfolio Management
Expand System
A Process Model for Managing the T&D Business
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Operate System
Sustain System
Indicates separate D, S, T components
Add New Customers
Respond to Emergencies
The Asset Management block below is the area covered by this presentation.
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Scope of 2015 Questions – Asset Management
◼ Roles and Responsibilities
◼ Distribution Lines
◼ Substations
◼ Transmission Lines
Areas covered in the Asset Management section include:
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Asset Management roles and responsibilities
Most companies use AM consistently across T&D for investment strategy, project selection and program development as well as to manage asset data.Interestingly AM is also used more broadly for project execution.
Roles/Responsibilities Distribution Substation Transmission
Asset Planning and Lifecycle Analytics
8 11 9
Investment Prioritization 9 9 10
Project Portfolio Ranking & Selection
8 9 10
Failure Analysis Reliability Management
7 8 8
Maintenance Strategy 10 9 10
Asset Data Management 9 10 10
Work Planning & Execution 6 7 6
Labor Resource Planning 3 3 4
Other 0 1 0
Asset Mgmt; pgs 2-4; question AM5
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Asset management organizational relationships
AM is generally a stand alone function that communicates across Engineering, Planning and Construction.AM leads the development of project and program investment plans utilizing information provided through planning studies and project execution plans.
Asset Mgmt; pg 6 ; Question AM10
The Asset Management Group:◼ Gathers input from engineering and planning to create project portfolios◼ Supports Engineering, Planning and Construction through asset data
management and project selections◼ Works with the Design, Construction and Maintenance groups to ensure
timely and cost effective completion of programs
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concerns that are being addressed through asset management
Concerns related to the reliability of T&D systems are addressed with a mix of programmatic replacements and rebuild and reinforcement projects.
Aging equipment: Replacement programs Development of lifecycle analytics Diagnostic testing to determine relative health
Specific equipment issues: Replacement programs that target equipment Installation of protective equipment (e.g. arresters) to support poor performing equipment or
systems
System resiliency: Hardening projects Worst performing circuit analyses and reinforcement projects
Budget availability: Ensuring that improvement projects are developed and prioritized Risk analysis is conducted Coordination of budgets across functions – a second group may be proposing different work on
the same assets.
Asset Mgmt; pgs 7-13, questions AM15 (cont’d on next page)
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concerns that are being addressed through asset management (cont’d)
Concerns related to the reliability of the T&D Systems are addressed with a mix of programmatic replacements and rebuild and reinforcement projects.
Major storm performance: Hardening projects to reduce storm damage Aggressive vegetation management Increased inventory of spare equipment
Safety: Implementation of new programs related to Safety – “Safety by Design” Improvement of processes, procedures and training
Job briefing Job Hazard Analysis Leveraging incident investigations for awareness
Cyber security: Electronic monitoring to detect and block access
Asset Mgmt; pgs 7-13, questions AM15
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Tools used to support the asset management process
Ivara EXP Davies AIS STARR Maximo Cascade SAP CMMS EDGR – Electric Distribution Grid Resiliency People Soft ALM
There are a variety of software solutions used to manage asset data, calculate health indices, develop programs, and assess risks. Companies also develop their own algorithms.
Asset Mgmt; pg 15 ; question AM 20
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Use of life cycle costing concepts
Companies use a variety of methods to evaluate asset life cycle costs. Generally the adoption of life cycle cost concepts is in an early stage.
Company Use of LCC
38 Asset risk and condition scores being developed
22 Design standards are intended to drive down long-term operation costs
33 NPV analysis is used to make repair/replace decisions
30 Just starting to consider the use of LCC
23Replacement algorithm considers corrective maintenance cost and frequency of repeat corrective maintenance. Also use a ration of corrective to preventive maint.
31 Not yet
18Company evaluates initial cost plus O&M costs to generate total ownership cost and ROI
17 Not yet
Asset Mgmt ; pgs 17 & 19; questions AM 30 & 35
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Problematic distribution equipment
URD cable and wood poles cause the most sleeplessness. Transformers are noted only once as problematic but 3 companies have replacement programs.
ProblematicReplacement
Programs
UG Network System 3 2
URD Cable 7 6
Wood Poles 4 10
Transformers 1 3
Cutouts 2 1
Concrete Poles 1 0
Line Switches 1 1
UG Switchgear 2 2
UG Network Protector Relaying 1 1
Other 1 3
Asset Mgmt ; pgs 17 & 19; questions AM 30 & 35
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Problematic transmission line equipment
For transmission, wood structures leads the list of problematic equipment. Static wire and underground cable are also of more concern to companies.Not surprisingly, most companies have wood pole replacement programs.
Problematic Replacement
Programs
Wood Structures 7 8
Steel Structures 3 3
Tower Foundations 3 5
Overhead Conductor 3 5
Static Wire 5 5
UG Conductor 4 4
Other 7 3
Ass Mgmt; pgs 29 & 31; questions AM 65 & 70
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Problematic T&D substation equipment
The top 3 are breakers, relays, and power transformers. Replacement programs are in place at most companies to address various equipment but particularly the top 3 most problematic.
Problematic Substation Equipment
Power Transformers 5
Switch Gear 4
Circuit Breakers 8
Relays 5
Instrument Transformers 2
Secondary Communications 2
Other 4
Substation Equipment Replacement Programs
Power Transformers 9
Switch Gear 8
Circuit Breakers 11
Relays 10
Instrument Transformers 4
SecondaryCommunications 5
Other 4
Asset Mgmt ; pgs 24 & 26 ; questions AM 50 & 55
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Predictive Reliability analysis tools
Reliability metrics (SAIFI, SAIDI, CAIDI, MAIFI) are the most commonly used to gauge asset performance. In one case, the DGA is used to anticipate transformer issues and has replaced scheduled maintenance.
Other metrics or information used to measure system performance include;
Transmission operational data System modelling of probable failure scenarios Component failure rates Forced and fault outage data for specific assets Equipment condition information
Asset Mgmt ; pg 15 ; question AM20
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Predicting condition based on measurable Factors
There is a variety of approaches and information that companies are using to make decisions relative the condition of in-service equipment.
Operational and maintenance history (age, fault exposure, load data, # operations, oil analysis, Doble results)
Outage and failure reports Analyses of failed components Worst performing circuit analysis Visual inspections Technology including, e.g., infrared and corona cameras and conductor assessment
robotics Decision support systems like CBM (condition-based maintenance) that integrate
asset data from multiple sources
Companies are using a mix of operating information, failure reports, inspection data, component historical experience and system reliability.
Thank you for your Input and Participation!
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