How Economic Value Management can be Applied to Power Plant Management

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15-19 October 2012 at Bali Nusa Dua Convention Center (BNDCC)

Nusa Dua - Bali, Indonesia19th Conference of the Electric Power Supply Industry (CEPSI 2012)
co-author: W,Tirakhan

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  • “เพิ่มผลผลิต” ดูในกรอบของการเพิ่มSpinning reserve  เพิ่มความมั่นคงของระบบ แต่ยังไม่ได้มองไปถึงว่าส่วนที่เพิ่มนั้นจะถึงปลายทาง ขายจริงได้หรือไม่ ขายได้ต้องเดินโรงนั้น ช่วงความต้องการเพิ่ม อาจเรียกเดินโรงไฟฟ้า IPPแต่เพื่อให้มองเห็นตัวเลขการเพิ่มมูลค่า จึงคำนวณแบบคาดการณ์ โดย 2.56 Baht/kWh (ของจริงคือ…..)c
  • How Economic Value Management can be Applied to Power Plant Management

    1. 1. October 19th, 2012 ECONOMICSParichart SuttiprasitElectricity Generating Authority of Thailand (EGAT)CEPSI 2012 PERFORMANCE EFFECTIVE ASSET MANAGEMENT Leading the way to Operational Excellence 2011
    2. 2. Introduction 2
    3. 3. Leading the way to Operational Excellence 2011 3
    4. 4. Fuel Cost(THB kWh) Replacement Energy Gain Merit Order Must Run Must Take Marginal Plant Electricity Demand Coal Natural Gas Oil A B C D E F G H I J K L M N O P Q R S T U V W Power Plants 4
    5. 5. Duration Correct Extend? Seal ! OEM Supervisor EGATHow much are we losing? Leading the way to Operational Excellence 2011 5
    6. 6. Outlines Planned Outage: off- gridOperation: on- grid Conclusion
    7. 7. SchedulingExecutingFunction Test Leading the way to Operational Excellence 2011
    8. 8. Scheduling Unit: Baht /day 8
    9. 9. Unit:Scheduling Baht /day Year 2012 AA-C20 11.18 Mar April May June 8.18 11.18 11.85 6.75 9
    10. 10. Unit:Scheduling Baht /day Year 2012 AA-C20 11.18 Leading the way to Operational Excellence 2011 10
    11. 11. Performance Planning  Decrease of EfficiencyHeat Rate (kJ/kWh) 10300 - 10285.72 10250 - 10216.37 10200 - Current 19 199 199 200 200 200 2008 95 6 9 1 3 Operation Time (year) 2010 6 Assumption: Heat rate has been constantly increased since 1995. Source: EGAT production efficiency division, 2006
    12. 12. Decision Making Before Outage “If main turbine do not overhaul (not remove rotor)” Availability Payment + Revenues Executing Energy Payment Critical Path Management Replacement EP EP Entire Asset Fuel Cost - Energy Cost $3.3 M USD - Cost Performance O&M Cost + Lost - Capital Maintenance $2.3 M USD - Charge CostReference: $0.5 M USDParichart, S. (2008) Outage optimization of steam turbine and auxiliaries. 12Proceedings of 17th Conference of the Electric Power Supply Industry (CEPSI 2008), October. Macao.
    13. 13. Unit: Executing Baht /day Year 2012 AA-C20 11.18 Mar April May JuneDuration 8.18 11.18 11.85 6.75Extend? Critical Path Management 13
    14. 14. SchedulingExecutingFunction Test Leading the way to Operational Excellence 2011
    15. 15. Economic Profit (EP) Driver TreeStrategic Improvement Plan (SIP) Leading the way to Operational Excellence 2011 15
    16. 16. EP Driver Tree & SIPs EE-C2 CWPs, CT efficiency Increase AA-T1-4 Fuel Optimize BB-C3 Exhaust Gas Temp. Increase Station Service Reduction : AA-T2-4, BB-C3-4 Adjust Fan Blade Angle CC-T1-10 Pump Speed Reduce DD-H1-5 Mini Hydro Turbine Install 14
    17. 17. Strategic Improvement PlansYear 2012 Forecasted economic profit (rE Fuel ReductionEconomic kWh increment Profit PPA 15
    18. 18. 358.4 WN-C3 TIAC system BPK-T2-4, BPK-C3-4 MM-T4- 0.6 13 Station Service 2.3 SNR-1-5 Mini. Hydro TB 0.71 Economic kWh increment Profit 408 45.3 * Outside CAH PPA 16Remark: *estimate only generation from Hydro Power Plants according to Internal Power Purchase Agreement
    19. 19. 399 * SB-C2 CWPs, CT 4.4 WN-C3 TIAC system BPK-T2-4, BPK-C3-4 MM-T4- N/A BPK-T1-4 Fuel •Min. Gen., 59.4 * 13 Station Service SNR-1-5 Mini. Hydro TB 1.7 * Reduction •Fuel Optimize (Mixed Fire) 3.26 BPK-C3 0.5 Exhaust Gas Temp. Increase 4.0 534 Economic 61.9 * Profit SB-C3 Online Filter Change This economic profit is one part of the whole Fuel Gain of Generation deputy.Remark: PPA* present the fuel savings from both individual Power Plants and Replacement Energy Gain of all power plants 17
    20. 20. Strategic Improvement PlansYear 2012 Forecasted economic profit (rE Fuel Reduction 534Economic kWh increment Profit 408 Total Economic Profit = 942 M THB PPA 18
    21. 21. Conclusion1. Dividing 2 groups: PO and OperationKey functions are changed depending on duration Replacement Energy2. PO duration ; Gain/LossKey function : Scheduling->Executing->Function Test3.Operation duration; Key function is Efficiency & Productivity Critical Equipment EP driver tree and SIPs Series Type are applied Leading the way to Operational Excellence 2011 19
    22. 22. • Parichart Suttiprasit• parichart.su@egat.co.th• Electricity Generating Authority of Thailand (EGAT) Leading the way to Operational Excellence 2011

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