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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How Economic Value Management can be Applied to Power Plant Management
- 1. October 19th, 2012 ECONOMICS Parichart Suttiprasit Electricity Generating Authority of Thailand (EGAT) CEPSI 2012 PERFORMANCE EFFECTIVE ASSET MANAGEMENT Leading the way to Operational Excellence 2011
- 2. Introduction 2
- 3. Leading the way to Operational Excellence 2011 3
- 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. Duration Correct Extend? Seal ! OEM Supervisor EGAT How much are we losing? Leading the way to Operational Excellence 2011 5
- 6. Outlines Planned Outage: off- grid Operation: on- grid Conclusion
- 7. Scheduling Executing Function Test Leading the way to Operational Excellence 2011
- 8. Scheduling Unit: Baht /day 8
- 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. Unit: Scheduling Baht /day Year 2012 AA-C20 11.18 Leading the way to Operational Excellence 2011 10
- 11. Performance Planning Decrease of Efficiency Heat 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. 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 Cost Reference: $0.5 M USD Parichart, S. (2008) Outage optimization of steam turbine and auxiliaries. 12 Proceedings of 17th Conference of the Electric Power Supply Industry (CEPSI 2008), October. Macao.
- 13. Unit: Executing Baht /day Year 2012 AA-C20 11.18 Mar April May June Duration 8.18 11.18 11.85 6.75 Extend? Critical Path Management 13
- 14. Scheduling Executing Function Test Leading the way to Operational Excellence 2011
- 15. Economic Profit (EP) Driver Tree Strategic Improvement Plan (SIP) Leading the way to Operational Excellence 2011 15
- 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. Strategic Improvement Plans Year 2012 Forecasted economic profit (rE Fuel Reduction Economic kWh increment Profit PPA 15
- 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 16 Remark: *estimate only generation from Hydro Power Plants according to Internal Power Purchase Agreement
- 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. Strategic Improvement Plans Year 2012 Forecasted economic profit (rE Fuel Reduction 534 Economic kWh increment Profit 408 Total Economic Profit = 942 M THB PPA 18
- 21. Conclusion 1. Dividing 2 groups: PO and Operation Key functions are changed depending on duration Replacement Energy 2. PO duration ; Gain/Loss Key function : Scheduling->Executing->Function Test 3.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. • Parichart Suttiprasit • parichart.su@egat.co.th • Electricity Generating Authority of Thailand (EGAT) Leading the way to Operational Excellence 2011
Editor's Notes
- “เพิ่มผลผลิต” ดูในกรอบของการเพิ่มSpinning reserve เพิ่มความมั่นคงของระบบ แต่ยังไม่ได้มองไปถึงว่าส่วนที่เพิ่มนั้นจะถึงปลายทาง ขายจริงได้หรือไม่ ขายได้ต้องเดินโรงนั้น ช่วงความต้องการเพิ่ม อาจเรียกเดินโรงไฟฟ้า IPPแต่เพื่อให้มองเห็นตัวเลขการเพิ่มมูลค่า จึงคำนวณแบบคาดการณ์ โดย 2.56 Baht/kWh (ของจริงคือ…..)c