The steam drum pressure controller for the RBMK-1500 is very complicated and is controlled by a special plant process computer. The steam drum pressure controller has aspects of "load following" logic as well as "pressure following" logic [ ]. Typical operation would consist of placing one turbine in "load following" logic. The second turbine uses "pressure following" logic to maintain the system pressure. The steam lines have communication paths to maintain uniform conditions in both halves of the reactor. Consequently, both sides of the reactor are influenced by the load and pressure following logic of the TCVs.
The turbines will be isolated at the beginning of many transients. Therefore, the transient response is not critical. Proportional-integral controllers will be used to control the steam drum separator pressure for one turbo-generator and the load for the second turbo-generator. The relative gains were empirically developed to provide stable behavior during steady state conditions. During transient conditions, one TCV will be controlled to maintain pressure. The second TCV will attempt to maintain constant mass flow through the TCV. It is assumed that this will approximate a constant load.
The error signal is generated as follows,
e(t) = ( Pset - PSL ) LHS turbogenerator
e(t) = ( set - SL ) RHS turbogenerator
where,
e(t) steam line pressure error signal
Pset setpoint for the steam line
PSL pressure in the steam line
set setpoint for the steam line
SL mass flow in the steam line
A proportional-integral control is applied to the error signal as follows,
U = a e(t)dt + b òe(t)dt
where,
U Valve command signal
a Coefficient of proportional control
b Coefficient for the integral control
The valve command signal will be used to control the TCV. In addition, to normal valve operations, the TCV will close under the following signals,
PSD < 6.0 MPa (first LHS turbogenerator [ ])
PSD < 5.5 MPa (second RHS turbogenerator [ ])
LSD > 300 mm + 5 s [ ]
Loss of offsite power (Trip 102)
The following closure logic is developed.
300 Is LHS steam drum pressure < 5.5 MPa?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20603000
W1(A) VARIABLE CODE = p
W2(I) PARAMETER = 100010000
W1(A) and W2(I) represent the pressure in the LHS steam drums
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 5.8900e6
Low pressure signal
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Is RHS steam drum pressure < 6.0 MPa?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20603010
W1(A) VARIABLE CODE = p
W2(I) PARAMETER = 500010000
W1(A) and W2(I) represent the pressure in the RHS steam drums
W3(A) RELATIONSHIP = lt
W4(A) VARIABLE CODE = null
W5(I) PARAMETER = 0
No comparison value is entered for the second variable
W6(R) ADDITIVE CONSTANT = 5.3900e6
Low pressure signal
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
303 Has the LHS steam drum level been high for 5 s?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20603030
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 170
High level signal for the LHS steam drums
W6(R) ADDITIVE CONSTANT = 5.0
5 sec time delay
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
304 Has the RHS steam drum level been high for 5 s?
CARD 206CCCC0, EXPANDED VARIABLE TRIP CARD
Card 20603040
W1(A) VARIABLE CODE = time
W2(I) PARAMETER = 0
W1(A) and W2(I) represent the transient time
W3(A) RELATIONSHIP = gt
W4(A) VARIABLE CODE = timeof
W5(I) PARAMETER = 171
High level signal for the RHS steam drums
W6(R) ADDITIVE CONSTANT = 5.0
5 sec time delay
W7(A) LATCH INDICATOR = l
W8(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
Next the logic to close the TCVs is developed.
1300 Is there a high LHS or RHS steam drum level signal?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20613000
W1(I) TRIP NUMBER = 303
High LHS steam drum level signal
W2(A) OPERATOR = or
W3(I) TRIP NUMBER = 304
High RHS steam drum level signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
1301 Is there a loss-of-offsite power signal or a high level signal?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20613010
W1(I) TRIP NUMBER = 102
Loss-of-offsite power
W2(A) OPERATOR = or
W3(I) TRIP NUMBER = 1300
High steam drum level signal
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
LHS TCV Closure Signal
1302 Is there a loss-of-offsite power signal, a high level signal, or the system pressure is below 5.5 MPa?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20613020
W1(I) TRIP NUMBER = 1301
High steam drum level signal or loss-of-offsite power
W2(A) OPERATOR = or
W3(I) TRIP NUMBER = 300
Low (< 5.5 MPa) LHS steam drum pressure
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
RHS TCV Closure Signal
1304 Is there a loss-of-offsite power signal, a high level signal, or the system pressure is below 6.0 MPa?
CARD 206CCCC0, EXPANDED LOGICAL TRIP CARD
Card 20613040
W1(I) TRIP NUMBER = 1301
High steam drum level signal or loss-of-offsite power
W2(A) OPERATOR = or
W3(I) TRIP NUMBER = 301
Low (< 6.0 MPa) RHS steam drum pressure
W4(A) LATCH INDICATOR = l
W5(R) TIMEOF QUANTITY (s) = It was set to either true (0.0) or false (-1.0) at the initiation of the transient
LHS TCV Closure Logic
The trip logic for the low pressure, high water level, and loss-of-offsite power logic is processed through the following lagged functions to smooth transitions.
300 CV-300 = Inverse of the LHS TCV signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20530000
W1(A) ALPHANUMERIC NAME = tcv_lhs
W2(A) CONTROL COMPONENT TYPE = tripunit
Specifies a tripunit component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20530001
W1(R) TRIP NUMBER = -1302
No closure signal for the LHS TCV
301 CV-301 = Lag the LHS TCV signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20530100
W1(A) ALPHANUMERIC NAME = tcv_lhs
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a tripunit component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20530101
W1(R) LAG TIME, A1 = 0.05 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 300
Specifies the inverse of the TCV trip signal
RHS TCV Closure Logic
The trip logic for the low pressure, high water level, and loss-of-offsite power logic is processed through the following lagged functions to smooth transitions.
302 CV-302 = Inverse of the RHS TCV signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20530200
W1(A) ALPHANUMERIC NAME = tcv_rhs
W2(A) CONTROL COMPONENT TYPE = tripunit
Specifies a tripunit component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20530201
W1(R) TRIP NUMBER = -1304
No closure signal for the RHS TCV
303 CV-303 = Lag the RHS TCV signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20530300
W1(A) ALPHANUMERIC NAME = tcv_rhs
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20530301
W1(R) LAG TIME, A1 = 0.05 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 302
Specifies the inverse of the TCV trip signal
Pressure in the drum separators
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20530900
W1(A) ALPHANUMERIC NAME = ds_pres
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 0.5
Valve scale factor.
W4(R) INITIAL VALUE = 6749928.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20530901
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = p 100010000
Card 20530902
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = p 500010000
Steam line pressure and flow signals, PSL and SL
The steam line pressure and flow signals will be based on the conditions immediately upstream of the turbine control valve. In a numerical model, such as RELAP5, signals to a control system can be affected by the time-step size. A lag signal is used to smooth numerical sensitivities to timestep size and approximate time lags that are present in the system.
310 CV-310 = LHS TCV pressure signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531000
W1(A) ALPHANUMERIC NAME = msl_pres
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 6749928.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20531001
W1(R) LAG TIME, A1 = 0.2 s
The steam line pressure is lagged to reduce it's sensitivity to numerical variations.
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 309
Pressure in the drum separators.
320 CV-320 = RHS TCV massflow signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532000
W1(A) ALPHANUMERIC NAME = msl_load
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1062.594.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20532001
W1(R) LAG TIME, A1 = 0.2 s
The steam line pressure is lagged to reduce it's sensitivity to numerical variations.
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = mflowj 595000000
Pressure in the drum separators.
Steam line pressure and flow setpoints, Pset and set
The steady state pressure and flow setpoints are established to maintain a system pressure of 6.69 MPa in the LHS and RHS steam drums. The flow setpoint is specified to be half of the total steady state steam flow. The pressure setpoint of the cell upstream of the valve is adjusted through a steady state calculation to give the proper pressure in the steam drums.
311 CV-311 = LHS TCV pressure setpoint
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531100
W1(A) ALPHANUMERIC NAME = pres_set
W2(A) CONTROL COMPONENT TYPE = constant
Specifies a constant variable
W3(R) SCALING FACTOR = 6.8600e6 Pa
The steam drum pressure.
321 CV-321 = RHS TCV massflow setpoint
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532100
W1(A) ALPHANUMERIC NAME = load_set
W2(A) CONTROL COMPONENT TYPE = constant
Specifies a constant variable
W3(R) SCALING FACTOR = 1.0251e+3
Pressure and flow mismatch signals, e(t)
The mismatch signals are generated as discussed above. Separate signals are generated for the LHS TCV and the RHS TCV.
312 CV-312 = e(t) = Pset - PSL
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531200
W1(A) ALPHANUMERIC NAME = pi_sig
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -72.3656
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531201
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 310
LHS TCV pressure signal
Card 20531202
W1(R) GAIN FOR V2 = -1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 311
LHS pressure setpoint
322 CV-322 = e(t) = set - SL
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532200
W1(A) ALPHANUMERIC NAME = pi_sig
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532201
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = -1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 320
RHS TCV load signal
Card 20532202
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 321
RHS TCV mass flow setpoint.
Turbine Control Valve Integral Mismatch Signal, 1/t òe(t)dt
The integral of the steam drum mismatch signal is generated as discussed above. Separate signals are generated for the LHS TCV and the RHS TCV.
313 CV-313 = ò e(t)dt = ò (Pset - PSL)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531300
W1(A) ALPHANUMERIC NAME = int_err
W2(A) CONTROL COMPONENT TYPE = integral
Specifies an integral variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -566671.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531301
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 312
LHS TCV pressure error signal
323 CV-323 = ò e(t)dt = ò (set - SL) dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532300
W1(A) ALPHANUMERIC NAME = int_err
W2(A) CONTROL COMPONENT TYPE = integral
Specifies an integral variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532301
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 322
RHS TCV mass flow error signal
LHS Turbine Control Valve Signal
The LHS TCV control signal is based on combining the proportional and integral error signals. The valve control signal is evaluated by adding the proportional and integral signals.
U = a e(t) + b òe(t)dt
where,
a Coefficient of proportional control, 1x10-6
b Coefficient for the integral control, 4x10-7
314 CV-314 = a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531400
W1(A) ALPHANUMERIC NAME = pres_err
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -0.226741
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531401
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1x10-6
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 312
LHS proportional error signal
Card 20531402
W1(R) GAIN FOR V2 = 4x10-7
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 313
LHS integral error signal
The error signal is lagged and then added to the steady state setpoint.
315 CV-315 = a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531500
W1(A) ALPHANUMERIC NAME = vlv_err
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -0.226735
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531501
W1(R) LAG TIME = 0.2 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 314
LHS TCV command signal
316 CV-316 = Anew = VSF * U
where,
Anew New valve area
VSF Valve scale factor (assumed to be 1.0)
U Valve command signal, a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531600
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.214045
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531601
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 0.1
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 315
LHS TCV command signal
The valve control signal is multiplied by the trip closure logic to specify it's position.
317 CV-317 = Anew * (LHS TCV Trip Signal)
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531700
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.214045
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 0.0
W8(R) MAXIMUM VALUE = 1.0
The range of minimum and maximum will limit the opening and closing setpoint of the TCV to fully closed (0.0) and fully open (1.0).
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531701
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 316
LHS TCV command signal
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 301
LHS TCV command signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531800
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.214045
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20531801
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 317
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 802
RHS Turbine Control Valve Signal
The RHS TCV control signal is based on combining the proportional and integral error signals. The valve control signal is evaluated by adding the proportional and integral signals.
324 CV-324 = a e(t) + b òe(t)dt
where,
a Coefficient of proportional control, 1x10-3
b Coefficient for the integral control, 2x10-4
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532400
W1(A) ALPHANUMERIC NAME = load_err
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532401
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1x10-3
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 322
RHS proportional error signal
Card 20523402
W1(R) GAIN FOR V2 = 2x10-4
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 323
RHS integral error signal
The error signal is lagged and then added to the steady state setpoint.
325 CV-325 = a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532500
W1(A) ALPHANUMERIC NAME = vlv_err
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532501
W1(R) LAG TIME = 0.2 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 324
RHS TCV command signal
326 CV-326 = Anew = VSF * U
where,
Anew New valve area
VSF Valve scale factor (assumed to be 1.0)
U Valve command signal, a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532600
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.45018
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532601
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 325
LHS TCV command signal
The valve control signal is multiplied by the trip closure logic to include the isolation logic.
327 CV-327 = U * (RHS Trip Signal)
where,
U Valve command signal, a e(t) + b òe(t)dt
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532700
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.45018
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 0.0
W8(R) MAXIMUM VALUE = 1.0
The range of minimum and maximum will limit the opening and closing setpoint of the TCV to fully closed (0.0) and fully open (1.0).
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532701
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 326
RHS TCV command signal
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 303
RHS TCV trip signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20532800
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.45018
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20532801
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 327
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 802
LHS Turbine Load Reduction Logic
801 CV-801 = AZ-1 Signal Actuation)
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580100
W1(A) ALPHANUMERIC NAME = tcv_rhs
W2(A) CONTROL COMPONENT TYPE = tripunit
Specifies a tripunit component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20580101
W1(R) TRIP NUMBER = 1197
802 CV-802 = No AZ-1 Signal Actuation)
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580200
W1(A) ALPHANUMERIC NAME = tcv_rhs
W2(A) CONTROL COMPONENT TYPE = tripunit
Specifies a tripunit component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20580201
W1(R) TRIP NUMBER = -1197
803 CV-803 = Reload At The Speed 2% Per Second
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580300
W1(A) ALPHANUMERIC NAME = delt_n
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 2.0e-2
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20580301
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 801
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = dt 0
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580400
W1(A) ALPHANUMERIC NAME = delt_n
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 0.0
W8(R) MAXIMUM VALUE = 1.0
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20580401
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 804
Card 20580402
W1(R) GAIN FOR V2 = -1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 803
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580500
W1(A) ALPHANUMERIC NAME = t_load
W2(A) CONTROL COMPONENT TYPE = constant
Specifies a constant variable
W3(R) SCALING FACTOR = 1209.34
The steam flow.
319 CV-319 = The Main Steam Line Flow Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20531900
W1(A) ALPHANUMERIC NAME = msl_load
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag component.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1062.314
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20531901
W1(R) LAG TIME, A1 = 0.2 s
The steam line pressure is lagged to reduce it's sensitivity to numerical variations.
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = mflowj 195000000
Massflow through TCV.
806 CV-806 = The Main Steam Line Flow Set Point
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580600
W1(A) ALPHANUMERIC NAME = load_set
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a multiply function.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1209.34
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 100.0
W8(R) MAXIMUM VALUE = 1500.0
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20580601
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 804
Card 20580602
W1(A) & W2(I) VARIABLE REQUEST CODE V2 = cntrlvar 805
Regulating Reload of The Turbine
807 CV-807 = Load Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580700
W1(A) ALPHANUMERIC NAME = pi_sig
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 147.0257
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20580701
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = -1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 319
Card 20580702
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 806
808 CV-808 = Integral Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580800
W1(A) ALPHANUMERIC NAME = int_err
W2(A) CONTROL COMPONENT TYPE = integral
Specifies an integral variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 152237.3
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20580801
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 807
809 CV-809 = Proportional-Integral Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20580900
W1(A) ALPHANUMERIC NAME = load_err
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 4.515
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20580901
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1x10-2
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 807
Card 20580902
W1(R) GAIN FOR V2 = 2x10-5
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 808
810 CV-810 = Lagged Valve Position Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20581000
W1(A) ALPHANUMERIC NAME = vlv_err
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 4.51414
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20581001
W1(R) LAG TIME = 0.2 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 809
811 CV-811 = New Valve Position
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20581100
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE =4.51414
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20581101
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 810
812 CV-812 = LHS TCV Valve Position
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20581200
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 0.0
W8(R) MAXIMUM VALUE = 1.0
The range of minimum and maximum will limit the opening and closing setpoint of the TCV to fully closed (0.0) and fully open (1.0).
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20581201
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 811
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 801
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20581300
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.214045
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20581301
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 318
Card 20581302
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 812
RHS Turbine Load Reduction Logic
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20582500
W1(A) ALPHANUMERIC NAME = t_load
W2(A) CONTROL COMPONENT TYPE = constant
Specifies a constant variable
W3(R) SCALING FACTOR = 1030.18
The steam flow.
826 CV-826 = The Main Steam Line Flow Set Point
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20582600
W1(A) ALPHANUMERIC NAME = load_set
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a multiply function.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 1030.18
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 100.0
W8(R) MAXIMUM VALUE = 1500.0
CARD 205CCC01, CONTROL COMPONENT DATA CARDS
Card 20582601
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 804
Card 20582602
W1(A) & W2(I) VARIABLE REQUEST CODE V2 = cntrlvar 825
Regulating Reload of The Turbine
827 CV-827 = Load Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20582700
W1(A) ALPHANUMERIC NAME = pi_sig
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -32.4135
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20582701
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = -1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 320
Card 20582702
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 826
828 CV-828 = Integral Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20582800
W1(A) ALPHANUMERIC NAME = int_err
W2(A) CONTROL COMPONENT TYPE = integral
Specifies an integral variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -27205.4
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20582801
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 827
829 CV-829 = Proportional-Integral Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20582900
W1(A) ALPHANUMERIC NAME = load_err
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -0.868243
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20582901
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1x10-2
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 827
Card 20582902
W1(R) GAIN FOR V2 = 2x10-5
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 828
830 CV-830 = Lagged Valve Position Error Signal
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20583000
W1(A) ALPHANUMERIC NAME = vlv_err
W2(A) CONTROL COMPONENT TYPE = lag
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -0.868388
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20583001
W1(R) LAG TIME = 0.2 s
W2(A) & W3(I) VARIABLE REQUEST CODE V1 = cntrlvar 829
831 CV-831 = New Valve Position
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20583100
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = sum
Specifies a sum variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = -0.868388
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20583101
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 830
832 CV-832 = LHS TCV Valve Position
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20583200
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.0
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
W6(I) LIMITER CONTROL = 3
3 means both minimum and maximum limits are to be imposed.
W7(R) MINIMUM VALUE = 0.0
W8(R) MAXIMUM VALUE = 1.0
The range of minimum and maximum will limit the opening and closing setpoint of the TCV to fully closed (0.0) and fully open (1.0).
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20583201
W1(A) & W2(I) VARIABLE REQUEST CODE V1 = cntrlvar 831
W3(A) & W4(I) VARIABLE REQUEST CODE V2 = cntrlvar 801
CARD 205CCC00, CONTROL COMPONENT TYPE CARD
Card 20583300
W1(A) ALPHANUMERIC NAME = tcv_pos
W2(A) CONTROL COMPONENT TYPE = mult
Specifies a lag variable.
W3(R) SCALING FACTOR = 1.0
W4(R) INITIAL VALUE = 0.45018
Initial conditions established after steady state simulation.
W5(I) INITIAL VALUE FLAG = 0
Zero means no initial value calculation and W4 is used as the initial condition.
CARD 205CCCXX, CONTROL COMPONENT DATA CARDS
Card 20583301
W1(R) ADDITIVE CONSTANT = 0.0
W2(R) GAIN FOR V1 = 1.0
W3(A) & W4(I) VARIABLE REQUEST CODE V1 = cntrlvar 328
Card 20581302
W1(R) GAIN FOR V2 = 1.0
W2(A) & W3(I) VARIABLE REQUEST CODE V2 = cntrlvar 832