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Reconstruction of CS GE Fanuc B3

Upgrading the control system of 200MW

 

Customer:                  ČEZ

Location:                    Power Plant Počerady

 

In 2008 the contract was made on the production Unit 3 Power Plant in Počerady. The subject of the work was upgrading the control system of 200MW on the performance of the Unit.
The Unit was shut down on 15.8.2008 and test operation was started on 8.11.2008.
14.11.2008 the work was completely transmitted.

 
Work on part ASCTP lasted only 2 months, after this time the block was again put into operation.

 

Unit 3 was originally controlled by the control system GE Fanuc Series 90-30 with 43 single controllers by functional technological units. The new concept, which currently prefers ČEZ, is based on 5 performing redundant controller GE Fanuc PACSystems Rx7i mirroring the memory..
In the original group controller was replaced CPU by Niu block, so that they can be used as a remote controller ICs. Communication between controllers and remote IO using redundant Ethernet bus.
The old control alghoritms (SW - logicmaster) were transformed to the new software enviroment Cimplicity ME suitable for controlers Rx7i.

It was necessary upgrade all Cimplicity HMI SCADA system of power plant unit and it needs to develope application software for HMI servers and operators stations.

New optical Ethernet comunications buses were made for transition on new configuration of control system.

Upgrade of HMI, in any local control rooms, to SCADA Cimplicity HMI GE Fanuc  was in scope of work

 

Scope of work:
Detail design for the part ASCTP
Delivery of Control system GE Fanuc PACSystems Rx7i and Rx3i
Control application software
SCADA application software
Delivery of cabinets
Delivery of the optical cables and cable routes
Assembly
Commissioning

 

I/O count per one block

Digital Inputs

24VDC

1376x

 

240VAC

1464x

Digital Outputs

24VDC

664x

 

240VAC

824x

Analog Inputs

0/4-20 mA

852x

 

+-10V/mA

36x

 

Pt100

240x

 

Thermocouples

324x

 

Expander

16x

Analog Outputs

0/4-20 mA

14x

 

 

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

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