copy of plant visit report to wgqtpp shnaghai, china
TRANSCRIPT
@Vaibhav Chauhan
P L A N T V I S I T R E P O RT WA I G A O Q I A O T H E R M A L
P OW E R S TA T I O N
P H A S E - I I I 2 X 1 0 0 0 M W S H A N G H A I , C H I N A ( 1 3 T H M A R C H 2 0 1 0 )
R E L I A N C E I N F R A S T R U C T U R E L T D . A - 3 1 , S E C - 6 4 , N O I D A .
S A S A N E N G I N E E R I N G D E P T .
Plant Visit Report Waigaoqiao TPS, Shanghai, China
1 of 14 @Vaibhav Chauhan
CONTENT
1.00.00 INTRODUCTION OF VISIT 2.00.00 CAPACITY 3.00.00 LOCATION 4.00.00 UNIQUE FEATURES OF PLANT 5.00.00 PHOTO GALLARY
Plant Visit Report Waigaoqiao TPS, Shanghai, China
2 of 14 @Vaibhav Chauhan
1.00.00 INTRODUCTION
During the period 1995 to 2005 rapid buildup of generation capacity was stressed in
China. Maximum numbers of thermal units installed during this period were with
subcritical/supercritical technology of 600 MW class. After 2005 China start adopting
clean coal technology, the highly efficient bigger 900/1000 MW ultra supercritical units
are come into operation. These bigger units are now used as base load stations. The
old inefficient units are phased out or now used only during peak time.
After completion of engineering meeting with SEC on 12th March, on the day of our return to
India on 13th March, we got an opportunity to visit Waigaoqiao Thermal Power Station to see
recently installed 2x1000 MW ultra supercritical units.
2.00.00 CAPACITY
Waigaoqiao is presently second largest thermal power plant in the world. Its total installed
capacity is about 5000 MW. This plant was constructed in three (3) phases.
Phase-I (4 x 300 MW, subcritical) = 1200 MW
Phase-II (2 x 900 MW, ultra supercritical) = 1800 MW
Phase-III (2 x 1000 MW, ultra supercritical) = 2000 MW
World's Biggest Thermal Power Plants
Rank Power Plant Location Capacity
(MW) Fuel
Configuration (Unit Size / Technology)
Boiler / Turbine Manufacturer
1 Taichung Taiwan 5,500 Bitumin
ous coal 10x550 MW (sub critical) Foster
Wheeler/B&W /GE
2a Waigaoqiao China 5,000 Bituminous coal
4x300 MW (sub critical) 2x900 MW (Ultra supercritical) 2x1000 MW (Ultra supercritical)
Alstom/Siemens
2b
Guodian Beilun Power Station
China 5,000 Bituminous coal
5x600 MW 2x1000 MW (Ultra supercritical)
………….
3 Zouxian China 4,400 Bituminous coal
4x600 MW (sub critical) 2x1000MW (ultra supercritical)
Dongfang/Hitachi
4 Kendal South Africa 4,374
Low grade
Bituminous coal
6x672 MW (subcritical) CEI/Siemens
5 Majuba South Africa 4,113
Low grade
Bituminous coal
3x665 MW, 3x716 MW (supercritical)
Steinmüller/ Siemens
Plant Visit Report Waigaoqiao TPS, Shanghai, China
3 of 14 @Vaibhav Chauhan
2.00.00 LOCATION
The plant is about 18 km from the centre of Shanghai, in the Pudong District, on the south
bank of the Yangtze River, which provides cooling water and also coal transport, from the
Shenfu and Dongshen mines.
3.00.00 UNIQUE FEATURES OF 1000 MW UNITS
1. 1000 MW unit is of state of art design & technology, the tower type boiler and
turbine/generator are manufactured and supplied by SEC under license of Alstom &
Siemens respectively.
2. Ultra supercritical steam parameters (HPT inlet pressure – 252 bar & MS/RH steam
temperature – 605 deg C) are used for 1000 MW units
3. The unit is operated with only single 1x100% TDBFP, there is no standby/startup motor
driven boiler feed pump. 1x100% TDBFP is used during startup which takes steam from
station auxiliary steam header during startup.
4. TD BFP is located on mezzanine floor and having separate condenser.
5. 2x100% condensate extraction pumps are used for 1000 MW unit.
6. Dual pressure condenser is used which gives advantage in net turbine cycle heat rate. SEC
is giving similar type of condenser in Sasan UMPP.
7. 1000 MW units are provided with 2x50% high pressure heater banks with group bypass
arrangement. Same practice is being followed in India for 500 MW units.
8. Coal is received by Barges which is unloaded on dedicated jetty and stored under shed.
9. Both SCR (selective catalytic reduction) for NOx removal & FGD (Flue gas
desulphurization) for SOx removal are installed for 1000MW units.
10. Instead of metallic Scaffolding for local maintenance, light weight bamboos are used for
making platform & temporary maintenance structure.
11. Six (6) 5W+1S front mills are provided for 1000 MW steam generator.
12. Instead of water impounded bottom hopper continuous ash removal scraper conveyer is
used.
13. 2x100% PHE and DMCW pumps are provided common for TG & SG auxiliaries cooling
in each 1000 MW unit.
14. 1000 MW generator is designed for 0.9 pf.
15. Instead of open switchyard, gas insulated switchyard has been provided results in saving of
space.
Plant Visit Report Waigaoqiao TPS, Shanghai, China
4 of 14 @Vaibhav Chauhan
16. Turbine operating floor, ground floor in TG building, mill area, boiler area are layed with
ceramic tiles which gives excellent surface finish & aesthetic looks.
17. Excellent House keeping - Power plant is very clean, properly maintained, warning sign
boards are provided wherever required.
5.00.00 PHOTO GALLARY:
Turbine Hall 2 x 1000 MW
Single flow HP & double flow IP Turbine
Plant Visit Report Waigaoqiao TPS, Shanghai, China
5 of 14 @Vaibhav Chauhan
Steam is fed to both LP turbines by Single crossover pipe
1000 MW (0.9 pf) Generator name plate, stator weight 443 Tons
Plant Visit Report Waigaoqiao TPS, Shanghai, China
6 of 14 @Vaibhav Chauhan
Common control room for 2 x 1000 MW units
Plant Visit Report Waigaoqiao TPS, Shanghai, China
7 of 14 @Vaibhav Chauhan
Critical parameters of 1000 MW unit
1x100% TDBFP (No startup MD BFP)
Plant Visit Report Waigaoqiao TPS, Shanghai, China
8 of 14 @Vaibhav Chauhan
1x100% TDBFP of SULZER Make
Separate Condenser for TDBFP
Plant Visit Report Waigaoqiao TPS, Shanghai, China
9 of 14 @Vaibhav Chauhan
2x100% Condensate extraction pumps
2x100% PHE (Common for both TG & SG Aux)
Plant Visit Report Waigaoqiao TPS, Shanghai, China
10 of 14 @Vaibhav Chauhan
Tower type boiler of 1000MW unit-8 (photograph taken from top of unit no-7, 121.5 m)
Three (3) pass ESP & FGD unit
Plant Visit Report Waigaoqiao TPS, Shanghai, China
11 of 14 @Vaibhav Chauhan
Coal storage area covered with shed
Coal Unloading jetty
Plant Visit Report Waigaoqiao TPS, Shanghai, China
12 of 14 @Vaibhav Chauhan
Long retractable soot blowers
Bamboo is used for temporary platforms in boiler for maintenance
Plant Visit Report Waigaoqiao TPS, Shanghai, China
13 of 14 @Vaibhav Chauhan
Scarper conveyer for bottom ash
6 Nos. front mills Arrangement
Plant Visit Report Waigaoqiao TPS, Shanghai, China
14 of 14 @Vaibhav Chauhan
Gas insulated switchyard