Governor Type 3
A linearised model of a hydraulic turbine with IEEE type 3 speed controller.
blockType: SubSystem
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Path in the library: |
Description
The block Governor Type 3 is a model of the IEEEG3 hydraulic turbine-regulator with pressure water line dynamics.
This block has a more detailed regulator model than the Governor Type 1 block and uses a linearised turbine model, or water column model, and headwater dynamics.
This diagram illustrates the overall structure of the block:
Ports
Input
#
ω
—
turbine speed
scalar
Details
Turbine speed in relative units, given as a scalar.
| Data types |
|
| Complex numbers support |
No |
#
Pref
—
reference speed offset
scalar
Details
The offset applied to the turbine-regulator load speed reference is returned as a scalar.
Connect this port to the Pref output port of a turbine load controller unit, such as the unit Controller LCFB1.
| Data types |
|
| Complex numbers support |
No |
Output
#
Pm
—
mechanical power
scalar
Details
Mechanical power, returned as a scalar.
| Data types |
|
| Complex numbers support |
No |
Parameters
Main
# Speed reference, pu — speed setpoint
Details
Speed reference in relative units.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Initial torque, pu — initial torque
Details
Initial torque in relative units at the start of the simulation.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Sample time — sampling period
Details
Time between successive executions of the block. During execution, the block produces output data and, if necessary, updates its internal state.
-
For inherited discrete-time operation, set this parameter to
-1. -
For discrete-time operation, set this parameter to a positive integer.
-
For continuous time operation, set this parameter to
0.
If this block is in a masked subsystem or a variant subsystem that supports switching between continuous and discrete time modes, increase the value of this parameter to ensure correct switching between the continuous and discrete implementations of the block.
For more information, see Masks in Engee
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Gate servomotor time constant T_g, s — time constant for the servomotor of the hydraulic turbine guide apparatus
Details
Time constant for the hydraulic turbine guide servomotor.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Pilot value time constant T_p, s — time constant of the control signal
Details
The time constant of the control signal. This parameter is associated with the block labelled Low-Pass Filter in the diagram.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Opening gate rate limit U_o, pu/s — shutter opening speed limit
Details
The limit of the shutter opening speed per unit. This parameter is associated with the unit labelled Low-Pass Filter in the diagram.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Closing gate rate limit U_c, pu/s — shutter closing speed limit
Details
The limit of the shutter closing speed per unit. This parameter is associated with the unit labelled Low-Pass Filter in the diagram.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Maximum gate position, on MVA capability P_max, pu — maximum valve opening o.e., at power P-max
Details
Maximum valve opening o.e., at P-max output.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Minimum gate position, on MVA 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 |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Permanent speed droop coefficient R_perm, pu — speed statism coefficient in relative units
Details
Rate statism coefficient in relative units.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Transient speed droop coefficient R_temp, pu — transient speed reduction factor
Details
The transient speed reduction factor in relative units. This parameters is related to the block labelled Filtered Derivative in the diagram.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Governor time constant T_r, s — controller time constant
Details
Regulator time constant. This parameters is related to the block labelled Filtered Derivative in the diagram.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Water starting time constant T_w, s — water start-up time constant
Details
Water inertia time constant. This parameter is related to the block labelled Lead-Lag in the diagram.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Penstock coefficient a_11 — coefficient a_11 of gate dynamics
Details
The a_11 coefficient of a_11 gate dynamics. This parameter is related to the block labelled Lead-Lag in the diagram.
| Default value |
|
| Program usage name |
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| Evaluatable |
Yes |
# Penstock coefficient a_13 — coefficient a_13 of gate dynamics
Details
The a_13 coefficient a_13 of the gate dynamics. This parameter is related to the block labelled Lead-Lag in the diagram.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Penstock coefficient a_21 — coefficient a_21 of gate dynamics
Details
The a_21 coefficient a_21 of the gate dynamics. This parameter is related to the block labelled Lead-Lag in the schematic.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
# Penstock coefficient a_23 — coefficient a_23 of gate dynamics
Details
The a_23 coefficient a_23 of the gate dynamics. This parameter is related to the block labelled Lead-Lag in the schematic.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |