2×25 MW steam turbine generator set (1791)
In the engine room there are 2 steam turbines each with 25 MW power generators. The turbine nr. 1 was built in 1967, it consist from HP, MP, and LP chamber and is equipped with a condensator, the last general repair was provided in 2008 and the HP stator was designated as worn down, the total operated hours of the turbine nr. 1 are 289 746. The turbine nr. 2 is a back pressure turbine and it consist from HP and MP chamber, last general repair was in 1991. It is operated seasonally approx. since 1995, the total operated hours are 122 249.
In the engine room there are situated the feeding pumps for the boielr house, there are 3 pcs feeding pump (140t water/hour, 13,5MPa, 950kW absorbed power, 1MW/6kV, 2980rpm motor).
I. Machine catalogue and equipments “Turbogenerator TG1“.4318
Type of turbo-generator PP 25/15-90/15/7
Nominal output on alternator connectors, cosφ = 0,8 25 000 kW
Max. allowed in overchagre, high, medium and low pressure parts of the turbine at cosφ = 0,9 28 000 kW
Maximal output on connectors in operation without regulated steam demand 15 000 kW
RPM of the turbogenerator 3 000 min-1
Steam parameters before start-up valve
pressure 9,0 MPa
temperature 535o C
Maximal parameters of the steam before start-up valve
pressure 9,9MPa
temperature 540oC
number of regulated steam demands 2
I.Regulation demand
Nominal demand press 1,5 + 0,035 MPa
Adjustable demand press 1,3 – 1,5 MPa
Nominal demand quantity 60 t/h
Max. quantity of the demand 80 t/h
II. Regulation demand
Nominal demand press 0,6 + 0,027 MPa
Adjustable demand press 0,4 – 0,7 MPa
Nominal demand quantity 80 t/h
Max. quantity of the demand 110 t/h
Number of not-regulated demands for recovery plant 3
High pressure part – I. demand
Demand pressure 2,0 – 2,4 MPa
Low presure part – II. demand
Demand pressure 96 – 286 kPa
Low presure part – III. demand
Demand pressure 30 – 70 kPa abs.
Maximal flow into HP part by nominal input status 180 t/h
Maximal flow into HP part by maximal input status 200 t/h
Maximal flow to MP part maximal demand pressure 1,5 MPA 125 t/h
Maximal flow to LP part by nominal demand pressure 0,6 MPA 53 t/h
Maximal flow to LP part bydemand pressure 0,6 MPA 60 t/h
Ctitical speed – HP rotor 1800 – 2200 min-1
– LP rotor 4000 – 4600 min-1
– generator 1500 – 1700 min-1
Generator TG 1 with driver dynamo
Generator-type: 6H5974/2
Apparent power 31250 kVA
Effective power by cosφ = 0,8 25000 kW
Nominal ampere 2870 A
Nominal voltage 6300 V + 5 %
Nominal speed 3000 min-1
Phase connection Y
Frequency 50 Hz
Driver dynamo – type 2 E 3440/4
Nominal power 180 kW
Nominal ampere 818 A
Nominal voltage 220 V
Nominal speed 3000 min-1
Effeciency turbo-generator by loaded cosφ = 0,8 -loading on 100 % 97,65%
-loading on 50 % 96,65%
-loading on 25 % 95,00%
Number of operating hours to 30.06.2009 289 746 hour
Last general repair in 2008
II. Machine catalogue and equipments „Turbogenerator TG2“. 4634
Description of mechanical equipment
Type of turbo-generator PR 25/18-90/15/6
Nominal output on alternator connectors, cosφ = 0,8 25 000 kW
by cos φ = 0,88 27 500 kW
Speed of turbo-generator 3 000 min-1
Steam parameters before start-up valve
pressure 9,0 MPa
temperature 535o C
Maximal parameters of the steam before start-up valve
pressure 9,9 MPa
temperature 540o C
I. Regulation demand
Nominal demand press 1,5 + 0,035 MPa
Adjustable demand press 1,3 – 1,5 MPa
Maximum size demand quantity 80 t/h
II. Regulated back pressure
Nominal back pressure 0,6 + 0,027 MPa
Adjustable back pressure 0,4 – 0,76 MPa
Maximum size back pressure 110 t/h
Number not regulation demand for recovery 1
HP part- I. uncontrolled demand
Demand pressure 2,0 – 2,4 MPa
Maximal flow into HP part by nominal input status 190 t/h
Maximal flow into HP part by maximal input status 200 t/h
Ctitical speed – HP rotor 1800 – 2420 min-1
– LP rotor 4000 – 4600 min-1
– generátor 1500 – 1700 min-1
Maximal flow LP part by maximal input status 115 t/h
Number of operating hours to 30.09.2009. 122 249 hour
Last reparation in 1991
Generator TG 2 with driver dynamo
Generator- type 6H5974/2
Apparent power 31250 kVA
Effective power by cosφ = 0,8 25000 kW
Nominal ampere 2870 A
Nominal voltage 6300 V + 5 %
Nominal speed 3000 min-1
Phase connection Y
Frequency
Driver dynamo – type 2 E 3440/4
Nominal power 180 kW
Nominal ampere 818 A
Nominal voltage 220 V
Nominal speed 3000 min-1
Including:
“Equipments for the feeding water thermal treatment”
“Heating and service water production”
