Gate Set Point

Gate servomotor set point (p.u.)

0.9

MW Set Point

Power set point (MW)

81

Tfr

Frequency transducer time constant (s)

0.016

DB_pos (pu)

Positive frequency dead-band threshold (p.u.)

0

DB_neg (pu)

Negative frequency dead-band threshold (p.u.)

0

PID Type

Selection switch for load pick-up

Fast

Gd

Derivative gain

0

Td

Derivative gain time constant

0.1

Gp

Proportional gain

5

Tp

Proportional gain time constant

0.1

Gi

Integral gain

1

Q(G)^3

Power 3 coefficient of flow VS servomotor polynomial

0

Q(G)^2

Power 2 coefficient of flow VS servomotor polynomial

0

Q(G)^1

Power 1 coefficient of flow VS servomotor polynomial

1

Q(G)^0

Constant term of flow VS servomotor polynomial

0

P(Q)^3

Power 3 coefficient of power VS flow polynomial

0

P(Q)^2

Power 2 coefficient of power VS flow polynomial

0

P(Q)^1

Power 1 coefficient of power VS flow polynomial

1

P(Q)^0

Constant term of power VS flow polynomial

0

Gross head (pu)

Gross head (p.u.)

1

Hydro_Tw

Water starting time (s)

1.5

Hydro_phi

Friction losses coefficient

0

Hydro_PF

Turbine power factor (MW/MVA)

0.9

Hydro a12

Coefficient of flow deviation VS speed deviation

0

Hydro ab22

Coefficient of power deviation VS speed deviation

Pset

Power set point

0.7

fb

Feedback selection

0

ep

Droop (p.u. / p.u.)

0.04

fset

Frequency set point (p.u.)

1.0

db

Frequency dead band (p.u.)

0.02

Kp

Proportional gain

4

Ti

Time constant for integration

0.8

Taw

Time constant anti-wind-up

0.1

Td

Derivative gain (s)

2

Tf

Time constant for derivative gain

0.2

CVmax

Maximum valve opening (p.u.)

1

Cvmin

Minimum valve opening (p.u.)

0

Cvropen

Maximum opening speed (p.u. / s)

0.5

Cvrclose

Maximum closing speed (p.u. / s)

0.5

f

Grid frequency (p.u.)

Pmech

Mechanical power (p.u.)

CV

Valve opening (p.u.)

G3

Fuel control gain (=1-Fmin) (p.u. / p.u.)

0.7

Td

Fuel control time delay (s)

0

G6

Frequency dependency selector

0

Fmin

Minimum fuel flow (p.u.)

0.3

Gs

Valve servomotor gain (p.u. / p.u.)

1

Ts

Servomotor time constant (s)

0.05

Char1

Flow characteristics VS valve opening

1 to 1

Tf

Fuel system time constant (s)

0.2

Gfb

Fuel system feedback (p.u. / p.u.)

0

Tc

Combustion chamber time delay (s)

0.01

Tcd

Turbine reaction time constant (s)

0.2

AF2

Mechanical torque at zero fuel (p.u.)

-0.3

BF2

Derivative of Mechanical torque to fuel flow (p.u. / p.u.)

1.3

CF2

Mechanical torque loss as function of speed (p.u. / p.u.)

0.5

Wf (i4)

Fuel flow to combustion chamber (p.u.)

Wf2 (i1)

Equivalent fuel flow of turbine (p.u.)

Tmech

Mechanical torque exerted by the turbine (p.u.)

Cos (phi)

Power factor

0.9

FDBmin

Lower level of the dead band (Hz)

0

FDBmax

Upper level of the dead band (Hz)

0

KGV

Gain (p.u. power / p.u. frequency)

25

TGV

The time constant for valve servomotors (s)

0.1

Ropen

Maximum opening speed (p.u. / s)

0.05

Rclose

Maximum closing speed (p.u. / s)

-0.05

CVmax

Maximum valve opening (p.u.)

1.0

CVmin

Minimum valve opening (p.u.)

0.0

CVmode

Auto/Manual switch (unused)

1

TCH

Time constant for steam chest (s)

0.2

TRH

Time constant for re-heater (s)

8

TCO

Time constant for cross-over (s)

0.4

FHP

Fraction of generation in the high-pressure turbine

0.25

FIP

Fraction of generation in intermediate pressure turbine

0.3

FLP

Fraction of generation in the low-pressure turbine

0.45

CB

Time constant for steam storage (s)

150

KSH

Coefficient for friction losses in super-heater (p.u. pressure / (p.u. flow)^2)

0.1

RC

Integrating part of steam pressure controller (1/s)

0.01

KC

Proportional gain in pressure controller

2

TD

Time delay in fuel flow (s)

5

TF

Time constant of steam generation

20

SGmax

Maximum steam generation (p.u.)

1.1

Kf1

Positive feedback of control valve to the steam controller

0

Kf2

Positive feedback of steam flow to steam generation

0

Kf3

Positive feedback of control valve to steam generation

0