Improved Wind Station Profits Through Excellent O&M
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Presentation by Bill Manganaro, NAES Project Manager - Renewable Energy World Conference 2011
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Improved Wind Station Profits Through Excellent O&M
- 1. Improved Wind Stations Profits Through Excellence in O&M William F. Manganaro
- 2. How? Operate and maintain a wind generation station – aka “Wind farm” as a power plant Multi-100s dollar investment Challenge: immature state of the industry
- 3. Thermal vs. Wind Generation Prime Movers – number and complexity Technology improvements Life Investment strategies Maintenance plans Accessibility Dispatch and manning
- 4. Risks in Wind Generation Rapid evolution / short model runs Changing investment strategies Changing grid conditions Significant dependence on a single provider
- 5. Apparent Attitude with Wind Just maintain it Less oversight Cost, cost, cost The “farm”
- 6. Power Station Management The fundamentals are unchanged: Operate safely Plan Comply with the plan Require performance
- 7. Different Priorities Owners’ Priorities: Maximize availability Maximize revenue ID and resolve warranty issues Build material history (understand WTG conditions) Achieve short AND long-term performance Good business relations Competitively source parts and labor services OEM Priorities: Perform contracted work at minimum cost Expend no more $ than necessary Achieve availability required by contract Win follow-on S&M contract If not won, maximize future revenue by: Retain material history Retain SCADA data Sole source of parts
- 8. Methods - Tools Excellent continuous operations: Small plant staff Annual O&M plan Computerized Maintenance Management System
- 9. Subjective Value Added Plant staff knows its equipment Early identification of material problems Assist owner with negotiations to resolve issues
- 10. End of Warranty Inspections Why? Options: OEM’s report Pre-EoW single inspection On-going inspection and trending Cost?
- 11. EoW Inspections (con’t) When to perform single inspection? Components covered: (long list) Continuous/periodic inspection & trending: Annual or bi-annual Graph results CMMS use “Mining” the SCADA
- 12. Conclusion Applying proven electrical generating station management principles optimizes income and preserves asset value. Cost is a small staff. Gains are from improved availability and smoother transitions: warranty to S&M, OEM S&M to post OEM Creates options for the owner
- 13. Questions?
Notas do Editor
- Good morning!For a few minutes we’ll discuss how excellent O&M optimizes wind generation station’s revenue and maintains asset values.
- Apply experience from operating power stations:Same fundamentals applySimilar information is neededStatus of equipmentPlanningPerformance monitoringImmature state of industry = dependence on OEMBefore going further, OEM is NOT BAD but priorities differ from those of owner.
- Few / ManyST or CT have numerous complex support systemsWTGs have fewer, less complex support systems.40 year life vs. 20 year lifeStraight-forward vs. PTC, tax credits, Feed-in tariffs.Years of experience to develop maint. Plan vs. complete dependence on OEM.Experienced users’ groups vs. new or no groupsAccessible in seconds vs. Miles and 80 m towerNot dispatchable/manned during the day vs. 24/7
- Short model runs = less experience upon which to base maintenance decisions. Longevity questions? Both over and under maintain.Investment/financing methods changing: Congress has not created a LT and level playing field.Wind impact on the grid – excess in the NW means curtailmentsSingle provider means less fewer choices, less competition
- Staff: PM, PA, 4 techs (2 pairs)Techs are the eyes and ears of the PMOne man cannot know condition of towers/nacelles and also perform PM duties of a typical power station.
- ID problems early = time to negotiate with OEM during warranty.
- Avoid surprises and costly repairs follow end of warranty period.Cost: $2000 to $3000
- 6 months beforeMechanical: main bearingGear boxYaw systemTowerBrakeBladesBlade bearingsLifting equipGeneral cleanlinessAlignmentsCooling systemsLub and Hyd systemsEoWElectrical:Elect cabinetsHub slip ring systemGeneratorConverter system