Ports and Sensor signals

Name

Description

                    DC +

                    DC -

AC connection at internal transformer secondary star (Refer: Figure 2 in Introduction)

AC connection at internal transformer secondary delta (Refer: Figure 2 in Introduction)

VSYNC (a,b,c)

Primary phase voltages used by the firing synchronization system

VSYNC (ba,cb,ac)

Primary phase-to-phase voltages used by the firing synchronization system

V_LINE

DC voltage relative to the ground at the DC line input

V_NEUTRAL

DC neutral relative to the ground at the DC line input

IPrimXfo (a,b,c)

AC currents in the primary windings of the transformer

Id

DC current on the bridge

IY (a,b,c)

AC currents in the Y secondary windings of the transformer

V12_xY(x = 1to 6)

The voltage across valve x of the bridge connected to the Y windings

I12_xY(x = 1to 6)

Current  through valve x of the bridge connected to the Y windings

CMD12INT_xY (x = 1 to 6)

Firing command from the internal source to component “1 to 2” of valve x of the bridge connected to the Y windings

CMD21INT_xY (x = 1 to 6)

Firing command from the internal source to component “2 to 1” of valve x of the bridge connected to the Y windings

CMD12EXT_xY (x = 1 to 6)

Firing command from the external source to component “1 to 2” of valve x of the bridge connected to the Y windings

CMD21EXT_xY (x = 1 to 6)

Firing command from the external source to component “2 to 1” of valve x of the bridge connected to the Y windings

CMDFLT

Flag for a valve fault

PPattern

binary code specifies that the thyristors are receiving firing pulses. For example, 5 specifies that firing pulses are sent to thyristors 1 and 3

Up_Tr

Signal sent to the tap changer to increase the tap position

Down_Tr

Signal sent to the tap changer to decrease the tap position

STATE12_xY (x=1 to 6)

State of the “1 to 2” component of valve x of the bridge connected to the Y windings

STATE21_xY (x=1 to 6)

State of the “2 to 1” component of valve x of the bridge connected to the Y windings

FAILSIG_xY (x=1 to 6)

Valve alarm signal with:

1: Infringement of Tq extinction limit time for Thyristor 12 (Auto reset to zero after a time step).

1: Infringement of Tq extinction limit time for Thyristor 21 (Auto reset to zero after a time step).

2: Reverse voltage of Thyristor 12 greater than Rbov. (Reset to zero only if Fail Reset= Enable.)

2: Reverse voltage of Thyristor 21 greater than Rbov. (Reset to zero only if Fail Reset= Enable.)

3: Direct voltage of Thyristor 12 greater than Rbov. (Reset to zero only if Fail Reset= Enable.)

DelayImpInt

Internal pulse delay

DelayImpExt

External pulse delay

DelayImp

Pulse delay

P_label

Same as Pattern_label, but originating from the control module

D_label

Delay from the control module

ID(a,b,c)

AC current in the delta secondary windings connected to the transformer

V12_xD_label (x=1, 2, 3, 4, 5, 6)

Voltage in valve x of the bridge connected to the delta windings

I12_xD_label (x=1, 2, 3, 4, 5, 6)

Current in valve x of the bridge connected to the delta windings

CMD12INT_xD (x=1 to 6)

Firing command from the internal source to component “1 to 2” of valve x of the bridge connected to the delta windings (logical).

For the GTO+Diode switch, the signal value is -1 when the diode is forced to conduct

CMD21INT_xD (x=1 to 6)

Firing command from the internal source to component “2 to 1” of valve x of the bridge connected to the delta windings

CMD12EXT_xD (x=1 to 6)

Firing command from the external source to component “1 to 2” of valve x of the bridge connected to the delta windings

CMD21EXT_xD (x=1 to 6)

Firing command from the external source to component “2 to 1” of valve x of the bridge connected to the delta windings (logical).

For the GTO+Diode switch, the signal value is -1 when the diode is forced to conduct

STATE12_xD (x=1 to 6)

State of the “1 to 2” component of valve x of the bridge connected to the delta windings

STATE21_xD (x=1 to 6)

State of the “2 to 1” component of valve x of the bridge connected to the delta windings

FAILSIG_xD (x=1to 6)

PeriodY_label

Period of AC voltage measured in the "equiangular" synchronization system of the bridge connected to the Y windings

PeriodD_label

Period of AC voltage measured in the "equiangular" synchronization system of the bridge connected to the delta windings

IdRef

DC current reference

VdRref

DC voltage reference

Mu

Commutation angle

Gamma

Extinction angle

Alpha

Firing delay angle generated by the regulation system

Deblocked_label

Unblocking status flag

CmdComFail

Command to simulate a switching failure

CmdInvMode

Specifies the rectifier/inverter mode (0 = rectifier; 1 = inverter)

ComFail

Detection signal for a switching failure on Y or delta bridge

AlphaRet

Signal specifying the forced retard mode

RatioXfo_label

Normalized transformation ratio (Ns/Np) of the converter transformer

syn_Vd0_level

Mean of the maximum ideal DC voltage in the equidistant synchronization system

syn_Alpha_Osc

Firing delay angle reflecting the oscillator phase in the equidistant synchronization

syn_Alpha_measured

Measured firing delay angle in the equidistant synchronization

syn_Delta_alpha

Phase variation (positive = lag; negative = lead) of oscillator in the equidistant synchronization

syn_Vac_ZC_number

Count for the 12 zero crossings of switching voltages in the 12 pulse converter [0 to 11] - in the equidistant synchronization system. The 0 count coincides with the zero-crossing of the switching voltage of valve 1 on the Y bridge (D) when the delta winding is lagging (or ahead) of the Y winding

syn_Firing_pulse_number

Count for the 12 firings of the valves in the 12 pulse converter [0 to 11] - in the equidistant synchronization system. The 0 count coincides with the firing pulse of valve 1 on the Y bridge (D) when the delta winding is lagging (or ahead) of the Y winding

sys_Frequency

Measured frequency of AC voltage in the equidistant type synchronization system

Vst_UCC

Voltage Setting Terminal (1= true).  Inverter controlling the voltage.

Boolean

Vref_UCC

DC voltage reference (pu) to the voltage regulator.

pu

ThirdSt_UCC

3rd station present when deblock (1=true, 0=false)

Boolean

Stop_UCC

Block the converter (0 to 1 pulse;  must be 0 to be able to start the converter; IdRef should be equal or less than 0.1 pu;).

-

Start_UCC

Deblock the converter (0 to 1 pulse).

-

Rect_UCC

Rectifier mode  (1= Rectifier, 0 = Inverter). Is in current control.

Boolean

Iref_UCC

DC current reference (pu) to the current regulator.

Note: The Id Ref slopes should be set to a large value (e.g. 10 pu/s) in the Hypersim model so as not to interfere with the external Iref_UCC.

pu

DefCCBloc_UCC

Def CC Bloc signal from local or master (1=true, 0=false)

Boolean

BVst_UCC

Backup Voltage Setting Terminal (1 = true, 0 = false). Inverter controlling the current, but will control the voltage if the Vst is blocked.

Boolean

AlphaRetard_UCC

Alpha retard activation from local or master (1=true, 0=false)

Boolean