Governor Type 1
A linearized model of a hydraulic turbine with an IEEE type 1 speed controller.
blockType: SubSystem
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Path in the library: |
Description
Block Governor Type 1 It is a model of a steam turbine with an IEEEG1 speed controller.
This unit allows you to simulate a two-shaft turbine and has two sets of fractions.:
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LP Fraction, K_2, LP Fraction, K_4, LP Fraction, K_6, LP Fraction, K_8 for low pressure (LP).
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HP Fraction, K_1, HP Fraction, K_3, HP Fraction, K_5, HP Fraction, K_7 for high pressure (HP).
This diagram illustrates the general structure of the block.:
Ports
Input
#
ω
—
turbine rotation speed
scalar
Details
The turbine speed in relative units, set as a scalar.
| Data types |
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| Complex numbers support |
No |
#
Pref
—
displacement of the reference speed
scalar
Details
The offset applied to setting the load speed of the turbine regulator is returned as a scalar. Connect this port to the output port Pref of the turbine load regulator unit, for example, the Controller LCFB1
| Data types |
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| Complex numbers support |
No |
Output
#
Pm(HP)
—
high pressure mechanical power
scalar
Details
High-pressure mechanical power is returned as a scalar.
| Data types |
|
| Complex numbers support |
No |
#
Pm(LP)
—
low pressure mechanical power
scalar
Details
Low-pressure mechanical power returned as a scalar.
| Data types |
|
| Complex numbers support |
No |
Parameters
General
Main group
# Speed reference, pu — setting the speed
Details
The speed standard in relative units.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Initial torque, pu — initial torque
Details
The initial torque per unit at the beginning of the simulation.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Sample time (-1 for inherited) — block sampling period
Details
The time between consecutive block executions. During execution, the block generates output signals and, if necessary, updates its internal state.
For the inherited discrete time mode, set this parameter to −1. For discrete mode, set this parameter to a positive real number. For continuous mode, set this parameter to 0.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
Governor
Main
# Governor gain K, pu — regulator gain factor
Details
The gain of the regulator.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Lag time constant T_1, s — the delay time constant of the regulator
Details
The equivalent delay time constant. This parameter is associated with the block indicated in the diagram as Lead-Lag. Set this parameter to 0 if the additional lag dynamics is negligible.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Lead time constant T_2, s — regulator advance time constant
Details
The equivalent advance time constant. This parameter is associated with the block indicated in the diagram as Lead-Lag. Set this parameter to 0 if the additional advance dynamics is negligible.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Valve position time constant T_3, s — valve position time constant
Details
The time constant of the valve position.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Maximum valve opening rate U_o, pu/s — maximum valve opening speed
Details
The maximum opening speed of the valve.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Maximum valve closing rate U_c, pu/s — maximum closing speed of the valve
Details
The maximum closing speed of the valve.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Maximum valve opening, on MW capability P_max, pu — maximum valve opening O. E., at power P-max
Details
Maximum valve opening O. E., at power P-max.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Minimum valve opening, on MW capability P_min, pu — Minimum valve opening O. E., at power P-min
Details
Minimum valve opening O. E., at power P-min.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Time constant for steam inlet T_4, s — the time constant of the incoming steam
Details
The steam intake time constant. This parameter is associated with the block indicated in the diagram as Low-Pass Filter.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# HP fraction K_1 — the power level of the high-pressure shaft, K_1
Details
The degree of power of the high-pressure shaft after the first passage of the boiler.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# LP fraction K_2 — the power level of the low-pressure shaft, K_2
Details
The power level of the low pressure shaft after the first passage of the boiler.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Time constant for second boiler pass T_5, s — time constant for the second boiler pass
Details
The time constant of the second boiler pass. This parameter is associated with the block indicated in the diagram as Low-Pass Filter1.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# HP fraction, K_3 — the power level of the high-pressure shaft, K_3
Details
The degree of power of the high-pressure shaft after the second passage of the boiler.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# LP fraction, K_4 — the power level of the low-pressure shaft, K_4
Details
The power level of the low-pressure shaft after the second passage of the boiler.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Time constant for third boiler pass T_6, s — time constant for the third boiler pass
Details
The time constant of the third boiler pass. This parameter is associated with the block indicated in the diagram as Low-Pass Filter2.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# HP fraction, K_5 — the power level of the high-pressure shaft, K_5
Details
The degree of power of the high-pressure shaft after the third passage of the boiler.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# LP fraction, K_6 — the power level of the low-pressure shaft, K_6
Details
The power level of the low-pressure shaft after the third passage of the boiler.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Time constant for fourth boiler pass T_7, s — the time constant for the fourth boiler pass
Details
The time constant of the fourth boiler pass. This parameter is associated with the block indicated in the diagram as Low-Pass Filter3.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# HP fraction, K_7 — the power level of the high-pressure shaft, K_7
Details
The degree of power of the high-pressure shaft after the fourth passage of the boiler.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# LP fraction, K_8 — power level of the low-pressure shaft, K_8
Details
The power level of the low-pressure shaft after the fourth passage of the boiler.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Deadband — the width of the dead zone
Details
The specified width of the deadband is from +deadband to -deadband.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
Literature
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"Dynamic Models for Steam and Hydro Turbines in Power System Studies, IEEE Transactions on Power Apparatus and Systems." Vol. PAS-92, Number 6, 1973, pp. 1904–1915.
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"Task Force on Turbine-Governor Modeling, Dynamic models for turbine-governors in power system studies", IEEE Power Energy Society, January 2013.
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"IEEE Guide for the Application of Turbine Governor Systems for Hydroelectric Generating Units", IEEE Std 1207-2011.