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At acquisition, the following signals are made available by the sensors:

  • CMD12phase_TCR1_label: Firing pulse of the positive valve in the TCR inductive branch;
  • CMD21phase_TCR1_label: Firing pulse of the negative valve in the TCR inductive branch;
  • Iphase_TCR1_label: Current across the TCR inductive branch;
  • STATE12phase_TCR1_label: State of the positive valve in the TCR inductive branch;
  • STATE21phase_TCR1_label: State of the negative valve in the TCR inductive branch;
  • VphaseTh_TCR1_label: Voltage across the valves in the TCR inductive branch;
  • VCAPphase_TCR1_label: Voltage across the capacitor in the TCR inductive branch;

FAILSIGphase_TCR1_label

  • CMD12phase_TSC1_label: Firing pulse of the positive valve in TSC capacitive branch no 1;
  • CMD21phase_TSC1_label: Firing pulse of the negative valve in TSC capacitive branch no 1;
  • Iphase_TSC1_label: Current across TSC capacitive branch no 1;
  • STATE12phase_TSC1_label: State of the positive valve in TSC capacitive branch no 1;
  • STATE21phase_TSC1_label: State of the negative valve in TSC capacitive branch no 1;
  • VphaseTh_TSC1_label: Voltage across the valves in TSC capacitive branch no 1;
  • VCAPphase_TSC1_label: Voltage across the capacitor in TSC capacitive branch no 1;

FAILSIGphase_TSC1_label

  • CMD12phase_TSC2_label: Firing pulse of the positive valve in TSC capacitive branch no 2;
  • CMD21phase_TSC2_label: Firing pulse of the negative valve in TSC capacitive branch no 2;
  • Iphase_TSC2_label: Current across TSC capacitive branch no 2;
  • STATE12phase_TSC2_label: State of positive valve in TSC capacitive branch no 2;
  • STATE21phase_TSC2_label: State of negative valve in TSC capacitive branch no 2;
  • VphaseTh_TSC2_label: Voltage across the valves in TSC capacitive branch no 2;
  • VCAPphase_TSC2_label: Voltage across the capacitor in TSC capacitive branch no 2;

FAILSIGphase_TSC3_label

  • CMD12phase_TSC3_label: Firing pulse of the positive valve in TSC capacitive branch no 3
  • CMD21phase_TSC3_label: Firing pulse of the negative valve in TSC capacitive branch no 3;
  • Iphase_TSC3_label: Current across TSC capacitive branch no 3;
  • STATE12phase_TSC3_label: State of positive valve in TSC capacitive branch no 3;
  • STATE21phase_TSC3_label: State of negative valve in TSC capacitive branch no 3;
  • VphaseTh_TSC3_label: Voltage across the valves in TSC capacitive branch no 3;
  • VCAPphase_TSC3_label: Voltage across the capacitor in TSC capacitive branch no 3;

FAILSIGphase_TSC3_label

  • pulsePat_int_label: Signal containing the binary code representing the firing orders of the valves
  • VSYNCphase_label: Voltage signal used by synchronization unit;
  • DelayImpInt_ label: Firing delay (as a fraction of calculation step) calculated by the internal command of the static compensator
  • DelayImpExt_ label: Firing delay (as a fraction of calculation step) calculated by an external command of the static compensator
  • DelayImp_ label: Firing delay (as a fraction of calculation step) sent to the static compensator
  • DelayImpUsed_ label: Firing delay (as a fraction of calculation step) used by the static compensator
  • V_Ref_label: Voltage reference for the controller;
  • B_Ref_label: Susceptance reference for the controller;
  • Slope_label: Slope of the controller;
  • Deblocked_label: Signal specifying that the firing pulses are blocked or not.
  • TCC_Mode_label: Signal specifying that the TCC mode is enabled or disabled
  • ManualMode_label: Signal specifying that the manual mode is enabled or disabled
  • Period_label: Period of the network (inverse of the frequency)
  • Frequency_label: Network frequency
  • Alpha_TCR1_label: Firing angle of the TCR inductive branch
  • wtphase_label: Phase angle of synchronization voltages
  • V_Prim_label: Voltage measured by the system
  • V_Error_label: Input of PI regulator of regulation unit
  • B_SVC_label: Susceptance seen from primary side of transformer
  • B_TSC_label: Capacitive susceptance required
  • B_TCR_label: Inductive susceptance required

Static Compensator Control Panel
Figures 11 - 23 to 11 - 25 show respectively the first, second and third pages of the static compensator control panel.

Static compensator control panel (General)


Static compensator control panel (TCR)


Static compensator control panel (TSC1)


Figure 11 - 26 shows the network used in this example. The test consists in applying a rising ramp from 0.75 to 1.25 pu to the source voltage.

Then a positive sequence reading is taken of the voltage on the transformer primary and of the current in the Rprim resistance to drawthe U-I dynamic curve of the system. The variation of the source voltage is done as a ramp over 10 seconds.

The following parameters are used:

  • Static Compensator: Fault parameters, automatic mode at Vref = 1.0 pu
  • Network at 735 kV, short-circuit power of 6000 MVA, quality factor of 10
  • Transformer YD 735/16 kV, 333 MVA, leakage of 15%
  • Load on primary = 200 MW
  • Load on secondary = 500 kW

Test network for the static compensator

U-I Dynamic Curve of the Static Compensator

U-I Dynamic Curve of the Static Compensator


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