AUXILIARY POWER MEASUREMENT, OPTIMIZATION & ANALYSIS
Cavinton Hotel, Yogyakarta | 14 – 16 Oktober 2014 | Rp. 8.000.000,- peserta
Cavinton Hotel, Yogyakarta | 11 – 13 November 2014 | Rp. 8.000.000,- peserta
Cavinton Hotel, Yogyakarta | 02 – 04 Desember 2014 | Rp. 8.000.000,- peserta
- Power Plant–Fossil fuels
- Fossil fueled fired generating stations have very precise definition of Thermal efficiency.
- It is the ratio of heat equivalent of Fuel fired to the heat equivalent of electricity sent to transmission net work.
- Auxiliary power consumption has two components.
- Unit auxiliary power consumption & station auxiliary power consumption.
- Power plant cycle efficiency
- Role of Steam Generator is to generate steam which is used to convert heat energy into kinetic energy.
- Conversion cost includes usage of steam produced for internal consumption such as SCAPH ,TDBFP, Air Condtioning based on VAS
- power consumption would depend on coal quality and on type of cycle.
- Why not use better coal, which would lower auxiliary power consumption and an optimum performance can be sustained with less expenditure on O&M Cost.
- Power plant cycle efficiency
- Gross boiler efficiency at any point of operation can be improved by consuming more electricity through Mills & fans.
- When we are using low cost–inferior coals- we consume more auxiliary power consumption to improve operating efficiency.
- Usage of an additional pulverizer to handle poor coal results in increased power consumption, however, corresponding improvement in Gross boiler efficiency may not be achieved.
- Importance of Auxiliary Power Consumption
- Degradation of equipment performance can be readily guaged from power consumption .
- Unit or boiler power consumption is monitored as % of generation which is just a gross index.
- Power consumption guarantee on boiler covers all major drives
- Power consumption should be measured together in a typical boiler efficiency test.
- Change in plant Conditions with time increases Auxiliary power
- Air in leakage to boiler gas enclosure
- Fouling of Boiler heating Surface–higher dry gas loss would increase power consumption
- Higher draft loss due to air ingress and ash deposition.
- Air heater leakage/ Air ingress after APH’s
- Deterioration of Turbine Steam Path Condition.
- Condenser pressure/ condenser cleanliness- air ingress and extent of tube pluggage
- Steam and water leaks from drains and vents.
- Net Heat Rate
- Net heat rate monitoring would cover impact of aux. Power consumption of different drive
- Net heat rate monitoring can be adopted for inernal processess.
- This would call for individual monitoring of drives using accurate energy meters .
- Such a system is being introduced as a retrofit in all old plants in ntpc & consumption levels are being tracked from overhaul to overhaul.
- Major Drives
- Drives are listed for a typical 500 mw unit.
- Auxiliary power consumption measurement can be done as per a standard test code.
- However no test code covers correction methodology which would be worked out based on process design.
- Performance Analysis
- Measured total power could be different from base line values for changes in operating regime
- It shall be higher wherever boiler performance has degraded
- Gross power could be same because some auxiliaries may be doing better and some operating at worse point due to performance degradation
- Correction Methodology
- Correction methodology is jointly developed with vendor as it is not generally covered in test codes
- Application of correction requires accurate monitoring of process parametes using accurate off line instruments
- Coal variation would have major effect on unit performance and thus power consumption
- Boiler Feed Pump
- Boiler feed pump is not a boiler
- Auxiliary and its power consumption varies in response to turbine mode of working and its degradation
- Boiler Feed Pump
- Bfp power consumption constitute a major chunk of power consumed by unit auxiliaries.
- Usage of steam driven feed pump results in reduction of apc %.
- Usage of turbo driven feedpump improves cycle efficiency.
- Any feedback on tdbfp performance due to condenser degradation
TRAINING METHOD
- Presentation
- Discussion
- Case Study
- Evaluation
INSTRUKTUR:
Tugino and team
TIME AND PLACE
- 14 -16 Oktober 2014
- 11 – 13 November 2014
- 02 – 04 Desember 2014
- Cavinton Hotel, Yogyakarta
TRAINING FEE
Rp. 8.000.000,- peserta / non recidential
FACILITY
- Training Kit
- Handout
- Certificate
- Lunch + 2 X Coffee Break
- Souvenir
- Pick up participants