Increased efficiency and flexibility in coal-fired power plants International O&M Conference NTPC siemens.com/steamturbines

Transcription

1 Increased efficiency and flexibility in coal-fired power plants International O&M Conference NTPC 2017 siemens.com/steamturbines

2 Drivers for efficiency and flexibility Steam power plants COP 21* United Nations Framework Convention on Climate Change * Conference of Paris (21 st ) Global warming target < 2º C Page 2

3 Drivers for supercritical parameters and flexibility Steam power plants 13%p t. 30 Net plant efficiency % Efficiency OECD 12 years financing Coal-fired power plants > 240 bar 593º C World average Ultra-supercritical specific CO2 emissions g/kwh* COP % United Nations Framework Convention on Climate Change World average Ultra-supercritical Flexibility Load change rates Residual load Scenario 2020 Global warming target < 2º C source: Spliethoff: et. al, CIT 2011 Page 3

4 CO 2 reduction Drivers for supercritical parameters and flexibility Steam power plants Minimize coal consumption Efficiency Flexibility Economic value Preferential treatment of renewables Page 4

5 Technology development of steam parameters The driver for specific electricity costs and efficiency North Lünen Emden 4 Wilhelmshaven Barh II Niederaußem K Waigaoqiao III Lünen Karanpura 150 MW 180/ ºC 400 MW 236/ MW 178/525 1,027 MW 265/576 1,040 MW 270/600 1,000 MW 812 MW 270/ MW º C 540º C 600º C Main steam temperature (ºC) 800 MW STG output (MW) Main steam pressure (bar) 180 bar 236 bar 280 bar MW Year Page 5

6 India Grid / Power Market 2015 approx. Customer 260GW Voices: installed power capacity ~160 GW HOW TO OPTIMIZE? WHAT WILL BE THE FUTURE? WILL HIGH EFFICIENT POWER GENERATION BASED ON CLEAN COAL SERVE ALL INDIAN NEEDS? FURTHER GROWTH? NEW GOVERNMENT REGULATIONS / LAWS? INTEGRATION OF RENEWABLES?.. Page 6

7 World Wide Investment in Renewables Source: AG Energiebilanzen, Stand: Dezember 2014 Page 7

8 Gigawatt [GW] Future Changes in India Grid / Power Market Installed Wind & Solar Power WIND POWER SOLAR POWER % Installed Wind Power Capacity already doubled within 5 years and 2015 Worldwide huge price decrease of PV Cells 2016: India has ambitious targets for renewables until GW of wind power capacity Asia esp. INDIA is a fast growing market in renewable investment 100 GW of solar power capacity Page 8 which is more than six times the current installed capacities in total 160GW additional capacity until 2022

9 50Hz or 60Hz Siemens Steam Turbines Overview Power Range from 45 kw to 1,900 MW SST ,900 MW Utility steam turbines SST-6000 SST MW 1,200 MW SST MW SST MW SST MW Industrial steam turbines SST-700 SST-800 SST MW 150 MW 250 MW SST MW SST MW Pre-designed steam turbines SST-300 SST-200 SST-150 SST-111 SST-110 SST MW 10 MW 20 MW 12 MW 7 MW 6 MW SST kw SST kw Page 9

10 SST-6000 Series -- supercritical Solution > 500MW State of the art technology highest efficiency Barrel type: minimum fast thermal loading capability Symmetrical casing design for minimum radial clearances High-performance LP blading for different sizes of exhaust area Static or brush less excitation Push rod arrangement for reduced axial clearances Water cooled stator H2 inner cooled rotor Page 10 Power Output MW Max. steam pressure 280bar Steam temperature 600 ºC / 620 ºC

11 SST-5000 supercritical MW Solution Design features for efficient and flexible application Short installation time due to pre assembled module High-performance LP blading for different sizes of exhaust areas Static or brush less excitation Short turbine train due to combined casing Air or H2 cooled generator Valves and HP exhaust directly flanged to lower part of outer casing for short service times and easy maintenance Page 11 SST-5000 Max. steam pressure Steam temperature Up to 9 extractions for feed water pre-heating MW 260bar 566 ºC / 566 ºC (600 C / 600 C)

12 SST-5000 supercritical MW Solution References around the world show quality of equipment Project: Nhon Trach 2 Country: Vietnam Plant type: CCPP 2x1 Power: 258 MW Frequency: 50 Hz Number of Units: 1 Com. operation: 2011 Project: Gent Country: Belgium Plant type: SPP Power: 328 MW Frequency: 50 Hz Number of Units: 1 Com. operation: 2010 Project: Baosteel Country: China Plant type: SPP Power: 350 MW Frequency: 50 Hz Number of Units: 1 Com. operation: turbines with a total power output of 25.9 GW in operation or commissioning Page 12

13 Driver for highest efficiency High Steam parameters are only the base to achieve high efficiency - technology and quality are the key to achieve high performance values over the life cycle Coal consumption and environmental impact are only driven by low Heat Rate values [Kcal/kWh] Flexibility of the Power Plant saves coal consumption and reduces emission to the environment during the operation (COP 21 Target) Siemens technology achieves highest efficiency by using long lasting technology features with highest reliability Lowest Mimimal Loads combined w/ best efficiency possible Page 13

14 Power Plants Digitalization Turbine Integration Assistance Optimization of Steam Power Plant Power Flex Operation Line Standard Operation Line Base Load Time Fast Start-up Primary Frequency Response Secondary Frequency Response Peak Power & Off- Frequency Partload Fast shutdown Prepared for start-up Fast start-up Page 14

15 Power Plants Digitalization Turbine Integration Assistance Optimization of Steam Power Plant 1 Power 2 HP IP LP LP G Steam Generator 5 Extraction Steam Valves 4 Fast control butterfly valves Feed Water Pumps 3 LP Feed Water Heaters Condenser Condensate Pumps Fast condensate control station Throttling 2 Additional valve 3 Condensate stop 4 HP heater 5 Fuel increase Time HP Feed Water Heaters 100% HP Feed Water Heater Bypass Page 15

16 Power Plants Digitalization Turbine Integration Assistance Optimization of Steam Power Plant All of these mentioned Measure needs to be fully integrated in the Turbine & Plant Automation System only single point or Island Solution (e.g. Throttling) will not serve the further plant operator / customer / Grid demands Page 16 Provision of advice and support by OEM in regards to optimization of turbine integration mandatory Improvements for new Plants and during service of power plants Coal based power plants with Higher efficiency and cleaner power production

17 Power Plants Digitalization Turbine blades from a 3D printer: A breakthrough for Siemens Turbine blades from a 3D printer: A breakthrough for Siemens groundbreaking success for the use of additive manufacturing one of the most demanding areas of application for this technology, Willi Meixner, CEO of the Siemens Power and Gas Division. Additive manufacturing as a major pillar for Power Plants digitalization strategy Benefits: fastest delivery for specific projects (e.g. reduced Spare stock) Higher Efficiency Higher Availability to surve customer demands Page 17

18 QUESTIONS? Page 18

19 Contact Dipl. Ing. Frederik Schruefer Sales Project Director Large Steam South Asia PG S EPC LSP Freyeslebenstr Erlangen Germany Phone: +49 (9131) Mobile: frederik.schruefer@siemens.com Page 19