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Total Reconstruction-EPOČ
Total reconstruction of electrical systems and control systems for five 200MW blocks.
Customer: CEZ
Location: Power plant Pocerady
Project description
ZPA Industry a. s., as the main contractor realized total reconstruction of electrical systems and control systems for five 200MW blocks. ZPA Industry a.s. provided project design, delivery, assembly, commissioning and maintenance.
We are especially proud of reconstruction of block No.4. This included complete replacement of electrical and control systems within three months! Block No.4 was switched off on February 10 and it was back in full operation by June 15. We used control system from General Electric Fanuc, including turbine control with General Electric Fanuc Series 90-30, Series 90-70. Cimplicity HMI was implemented for SCADA system.
Project summary
Total Cimplicity I/O points: 58400 points
Cimplicity Viewers: 26
Cimplicity Servers: 14
Total System I/O points: 32980 I/O points
Total switchboards, up to 6kV: 410 cabinets
Total high-voltage switchboards: 130 cabinets
GE Fanuc Series 90-30: 247 systems
GE Fanuc Series 90-70: 4 systems
IMPLEMENTATION OF GE FANUC CONTROL SYSTEM RESULTED IN FAILURE RATE
LOWERED BY 78%, THUS FUNDAMENTALY INCREASING PRODUCTION RELIABILITY.
Amount of regulated drives and regulation loops (per block)
- 100 drives in ON - OFF 380 mode or 220 VAC
- 25 drives in ON - OFF 6 kV mode
- 125 drives in ON - OFF mode
- 60 drives in manual control MAN 0 - 100 %
- 122 drives for AUT made for 65 driving loops
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I/O count per one block |
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Digital Inputs |
24VDC |
1376x |
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240VAC |
1464x |
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Digital Outputs |
24VDC |
664x |
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240VAC |
824x |
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Analog Inputs |
0/4-20 mA |
852x |
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+-10V/mA |
36x |
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Pt100 |
240x |
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Thermocouples |
324x |
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Expander |
16x |
Technology description
Boiler
- Rated boiler output 640 tonnes per hour
- Superheated steam ratings 17,5 Mpa, 540°C
- Reheated steam ratings
units 2, 3, 4 4,02/3,765MPa,346/550°C
units 5, 6 343/540°C
- Feed water temperature 250°C
- Boiler efficiency at rated output 86,5%
Turbine
- Rated capacity 200MW
- Rated parameters upstream of turbine 16,2 MPa/535°C
- Rated par. upstream of medium-pressure casing 3,5 MPa/545°C
- Cooling water for condenser 19500m3/hr at 20°C
Alternators
- Capacity 200 MW 235 MWA
- Voltage 15 kV
- Cos phi 0,85
- RPM 3000 50 Hz
Dates of commissioning
Block 6,3-93
Block 2-95
Block 4-96 (realized within 3 months - block shut down on 10.2. 96 and was again in full service by 13.5. 96 )
Block 5-98
Coal-loading automation-96
Cooling water pump stations automation 97
ZPA Industry Inc. is an Invensys Wonderware Registered System Integrator