Section Content

The simulator dashboard contains command switches, control parameters and measurement device display for the stabilization system status of the system. This dashboard represents the interactive user interface for the simulation of the transient stability on the power system under study.

This section is a complete reference for components contained in the simulation dashboard.

3.1 Startup Panel

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.

3.2 Tables for Parameters Setup and Control Switches

Control parameters	Default values	Variation interval
Duration of the fault 1 (second)	0.1	[0 ; 1]
Duration of the fault 3 (second)	0.1	[0 ; 1]
delta file	0	[0 ; 20]
Voltage file	0	[0 ; 20]

Table 2: User accessible control parameters

Command switches	Associated function
“Start PSS”		Default status, no action.
“Start PSS”		PSS is activated until the system is stabilized.
“Activate Damping”		The generator has no rotor damper windings.
“Activate Damping”		The generator has rotor damper windings to damp torque oscillations
“Apply Fault at Bus 1”		Default status, no action.
“Apply Fault at Bus 1”		Fault is triggered on bus 1.
“Apply Fault at Bus 3”		Default status, no action.
“Apply Fault at Bus 3”		Fault is triggered on bus 3.
“Line Breakers”		Default status, no action.
“Line Breakers”		Switches are closed: the line between buses 1 and 3, and between buses 3 and 2 are reconnected.
“Trig-Acq. Gr. 1”		The trigger function is inactive. Signals are not synchronized with respect to a reference signal.
“Trig-Acq. Gr. 1”		Signals are synchronized with the oscillations' frequency of the system.
“Trig-Acq. Gr. 2”		The trigger function is inactive.
“Trig-Acq. Gr. 2”		The oscilloscopes are waiting for a fault initiation to display the signal waveforms for 6 seconds.

Table 3: Control switch descriptions

Control Indicators	Description
D1		Switch closed (line connected)
D1		Switch open (line disconnected)
D2		Switch closed (line connected)
D2		Switch open (line disconnected)
Damping		The generator is equipped with rotor damper windings
Damping		The generator is not equipped with rotor damper windings.
Oscillating		The system is oscillating.
Oscillating		The system is not oscillating.
Stability		The system is stable.
Stability		The system is not stable.
PSS		The PSS is enabled.
PSS		The PSS is no longer enabled.
Recording		Data is being saved.
Recording		No data is being saved.

Table 4: Status indicator functions

3.3 Tab Descriptions

The panel shown in Figure.2 contains several tabs selectable by the user

The Panel tab contains all simulator dashboard components and two additional tabs, Display 1 and Display 2 are oscilloscope tabs that the user can select to change display pages:

Oscilloscope tabs “Display1” and “Display 2”: On tab “Display1” the signals are displayed continuously and on tab “Display 2” the signals are saved and displayed for 6 seconds after the initiation of a fault on the power system. Also, those signals are updated each time a new fault occurs.
“Help” tab: located in the top left corner of the dashboard screen, this page contains information about the exercises.

3.4 Display of Measurement Devices and Oscilloscopes Waveforms

Sections	Display	Label	Measurement displayed
Bus 1	Display	mag	Voltage magnitude at bus 1
Bus 1	Display	ang	Voltage angle at bus 1 [degree]
Bus 2	Display	mag	Voltage magnitude at bus 2
	Display	ang	Voltage angle at bus 2 [degree]
	Display	P	Active power at bus 2 [MW]
	Display	Q	Reactive power at bus 2 [MVar]
Bus 3	Display	mag	Voltage magnitude at bus 3
Bus 3	Display	ang	Voltage angle at bus 3 [degree]
Bus 4	Display	mag	Voltage magnitude at bus 4
	Display	ang	Voltage angle at bus 4 [degree]
	Display	P	Active power bus 4 [MW]
	Display	Q	Reactive power at bus 4 [MVar]
	Display	delta	Generator rotor mechanical angle [degree]

Table 5: Measurement device display modules

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 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 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.

Table 6: Waveforms and oscilloscope settings

Transient Stability - 3. Description of the Panels

Section Content

3.1 Startup Panel

3.2 Tables for Parameters Setup and Control Switches

3.3 Tab Descriptions

3.4 Display of Measurement Devices and Oscilloscopes Waveforms