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At start up, the simulator panel appears, as shown in Figure.2. The default values for the switches, explained in Table 3, are in grey fields.

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Figure2
Figure2

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3.2 Tables for Parameters Setup and Control Switches

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Command switches

Associated function

 

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“Start PSS”

image-20240221-181118.png

Default status, no action.

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PSS is activated until the system is stabilized.

 

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“Activate Damping”

image-20240221-181118.png

The generator has no rotor damper windings.

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The generator has rotor damper windings to damp torque oscillations

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“Apply Fault at Bus 1”

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Default status, no action.

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Fault is triggered on bus 1.

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“Apply Fault at Bus 3”

image-20240221-181118.png

Default status, no action.

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Fault is triggered on bus 3.

 

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“Line Breakers”

image-20240221-181118.png

Default status, no action.

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Switches are closed: the line between buses 1 and 3, and between buses 3 and 2 are reconnected.

 

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“Trig-Acq. Gr. 1”

image-20240221-181118.png

The trigger function is inactive. Signals are not synchronized with respect to a reference signal.

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Signals are synchronized with the oscillations' frequency of the system.

 

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“Trig-Acq. Gr. 2”

image-20240221-181118.png

The trigger function is inactive.

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The oscilloscopes are waiting for a fault initiation to display the signal waveforms for 6 seconds.

Table 3: Control switch descriptions

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Table4
Table4

Control Indicators

Description

D1

image-20240221-183043.png

Switch closed (line connected)

image-20240221-183149.png

Switch open (line disconnected)

 

D2

image-20240221-183159.png

Switch closed (line connected)

image-20240221-183225.png

Switch open (line disconnected)

 

Damping

image-20240221-183249.png

The generator is equipped with rotor damper windings

image-20240221-183258.png

The generator is not equipped with rotor damper windings.

Oscillating

image-20240221-183309.png

The system is oscillating.

image-20240221-183336.png

The system is not oscillating.

 

Stability

image-20240221-183319.png

The system is stable.

image-20240221-183340.png

The system is not stable.

PSS

image-20240221-183326.png

The PSS is enabled.

image-20240221-183349.png

The PSS is no longer enabled.

 

 

Recording

image-20240221-183359.png

Data is being saved.

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No data is being saved.

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Tab

Oscilloscopes

Waveforms displayed on the oscilloscopes

 

 

 

 

Display1

Oscilloscope 1

“Generator mechanical angle (degree)”.

Mechanical angle of the generator delta in degrees.

Oscilloscope 2

“BUS 4 magnitude voltage (pu)”.

Voltage magnitude in pu of phase a A on bus 4.

y-axis scale

Setting the y-axis scale on the oscilloscope displaying the rotor mechanical angle.

y-axis offset

Setting y-axis offset on the oscilloscope displaying the rotor mechanical angle.

 

 

 

 

 

 

 

Display 2

Oscilloscope 1

“Generator mechanical angle (degree)”.

Generator mechanical angle delta in degrees for 6 seconds, when a fault occurs and trigger “Trig-Acq.Gr. 2” is active.

Oscilloscope 2

“BUS 4 magnitude voltage (pu)”.

Voltage magnitude in pu of phase a A on bus 4 over a period of 6 seconds when a fault occurs and trigger “Trig-Acq.Gr. 2” is active.

y-axis scale

Setting the y-axis scale on the oscilloscope displaying the rotor mechanical angle

y-axis offset

Setting the y-axis offset on the oscilloscope displaying the rotor mechanical angle.

delta_file

File number for delta angle data saved during fault.

voltage_file

File number for bus 4 voltage data saved during fault.

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