Den Haag and Leiden Repowering

Transcription

1 Den Haag and Leiden Repowering Deltalings Feb Hette Hylkema (E.ON ENT)

2 Content E.ON Benelux Den Haag en Leiden; 2 projecten met GE LM gasturbines Den Haag: design/project summary Den Haag: operating experience LM6000 Leiden operating experience LM2500+

3 E.ON Benelux GWh produced Power 2008 Power 2009 Electricity 10,746 10,473 Heat 4,444 4,136 Netherlands 83 44% 1.9 GW 56% Leiden The Hague UCML Maasvlakte Delft Galileïstraat RoCa , MW MW MW MW MW MW MW gas coal Planned Maasvlakte 3 1,100 MW (2013) Antwerp 1,100 MW (2015) Belgium 41% 0.9 GW 59% Vilvoorde Langerlo 385 MW 556 MW gas coal Generation Hard-coal-fired power station Gas-fired power station 3

4 WKK STEG: Den Haag en Leiden Overzicht STEG Den Haag Ontg K51 MWth KG/S K52 MWth KG/S Gas ºC Gas ºC EDH 03 MWth GT 51 GT 52 EDH 02 0 MWth MW MW EDH 01 0MWth EDH 53 SVC 0 MW MWth

5 Twee Repowering projecten Leiden 2005: vervangen van 2 Rolls Royce Olympus Gas Turbines (25 MWe) door 2 GE LM2500+ (31 MWe) Den Haag 2007: vervangen van 2 Rolls Royce Olympus Gas Turbines (25 MWe) door 2 GE LM6000 PD Sprint (48 MWe) op een nieuwe generator.

6 Den Haag Repowering Technical Scope 2 GE LM 6000 PD Sprint Gasturbines, connected by SSSclutches to one common generator Installation inside existing building with minimal changes to facades: fuel gas compressor in new outside building to minimise hazardous area. New electrical connections to grid ENECO, new STT generator New control system New intercooling water system Fuel supply system incl. fuel gas compressor Modifications to HRSG s new (smaller) economisers, partly new isolation and casing. ventilation, instrument/working air.

7 Project Summary Reused 100+ year building (Historical Landmark) Structure Foundation Cranes Etc HRSGs Steam Turbine District Heating System Main Control Room Existing interconnecting piping

8 Reasons for Re-Powering Den Haag Unit 15 reached end of lifetime, both technical and economical. RR Olympus Gasturbines were having high vibrations, low efficiency, and maintenance became troublesome. HRSG s able to handle 25% higher exhaust mass flow.

9 Re-Powering Comparisons Increased Output Electrical 99 MW vs. 62 MW (Back Pressure Mode) Electrical 112 MW vs. 75 MW (Condensing Mode) Thermal 90 MW vs. 80 MW Increased Efficiency Electrical 45% vs. 38% (7484Btu/Kwhr vs. 8982Btu/Kwhr) Back Pressure Mode Electrical 50%+ vs. 43% (6826Btu/Kwhr vs. 7937Btu/Kwhr) Condensing mode Reduced Emissions (DLE Technology) 25ppm Increased Reliability Supportable Equipment Overall Efficiency up to 90%

10 Design Summary Design a New State of the Art Power Generation facility within the confines of the 100+ year old existing plant and utilize the existing HSRG s LM6000PD Gas Turbines Best Interface with Existing HSRGs was utilizing 2 LM6000s Driving 1 Common Generator Met the redundancy requirement for critical equipment Cost Savings on the High Voltage Operational Flexibility Spinning reserve/voltage Support

11 Design Summary

12 Design Summary

13 Project Summary Original Rolls Royce Plant Decommissioned April 2007 Demolition Operational Dual LM6000 Single Generator Plant April 2007 November 2007

14 Previous Existing Plant 2 Rolls Royce Olympus Gas Turbines Two Holec Electric Generators Two HRSGs 1 Condensing Steam Turbine with heat extraction 1 Steam Turbine Electric Generator District Heating system (Hot Water)

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23 Den Haag Repowering Operating flexibility 112 MWel. 2 GT s 1 GT MWth 90

24 MW Power increase Den Haag 15 (backpressure mode, 10 grd C) LM6000 Sprint LM6000 Sprint no gascompressor RR Olympus design RR Olympus 2006 Fuel Power Heat

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26 Operating experiences LM6000 -highlights ~4000 hrs/year ~150 starts/year

27 Drive Train 100 Ft

28 Corrective Measures New Torque Shaft and Hub at GT2 side. Work conducted in May 2008 SSS Clutch/LS gear GT1 damage due to lack of lube oil; solved by modification in July 2008

29 LM 6000 PD (DLE) CO emissions sensitive to ambient conditions Fuel gas pressure Caloric value Gas temperature Air conditions (PTx) Etc.

30 LM 6000 Oil leakage 2011 Cause: improper match lube oil - sealing material Carbonizing was noted at several areas

31 Operating experiences LM highlights ~4000 hrs/year ~150 starts/year

32 Blade modifications HPC HPC blades Damage detected after ~ 1000 hrs Modifications included shortening of blades and cropping tips