LAB 1_Static Var Compensator.pdf

7 in lvdac ems open the svc control window and make

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7. In LVDAC-EMS, open the SVC Control window and make the following settings: Make sure that the Function parameter is set to Static Var Compensator . This function is required to allow control of the firing angle of the thyristors in the TCR, as well as to switch the TSCs in and out. Set the Control Mode parameter to Manual Control . This allows manual control of the firing angle of the thyristors in the TCR and enables manual switching of the TSCs. Set the TCR Firing Angle parameter to 0° by entering 0 in the field next to this parameter or by using the control knob in the lower left corner of the window. This sets the firing angle of the TCR to 0°. Make sure that the TSC 1 parameter is set to Switched Out . This ensures that TSC 1 is switched out and, thus, that it does not supply any reactive power. Start the Static Var Compensator function by clicking the Start/Stop button or by setting the Status parameter to Started . 8. In LVDAC-EMS, open the Metering window. Once in the Metering window, open the Acquisition Settings dialog box. Set the Sampling Window to 8 cycles then click OK to close the dialog box. This is necessary to be able to measure the magnitude of the harmonic components produced by the SVC. Static Var Compensator (SVC)
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Exercise 1 – Main Components of a Static Var Compensator (SVC) Procedure Static Var Compensator (SVC) 6 In the Metering window, set three meters to measure the rms values (ac) of the fundamental component and harmonic components in the current ܫ ௌ௏஼ flowing in the SVC (input I1 ). Set one of these meters to measure the fundamental component of the current ܫ ௌ௏஼ by right-clicking the AC button, then selecting AC 1. Set the two other meters to measure the 5 th and 7 th harmonic components of the current ܫ ௌ௏஼ by right-clicking the AC button on each of these meter, then selecting AC 5 and AC 7. Finally, set a meter to measure the three-phase reactive power ܳ ௌ௏஼ in the SVC [metering function PQS1 (E1, I1) 3~ ]. TCR operation In this section, increase the firing angle of the thyristors in the TCR from 0° to 180° and observe what happens to the fundamental component (both the rms value and the waveform) of the current flowing in the TCR and the reactive power in the TCR. You will also measure the amount of reactive power absorbed by the TCR, and confirm that it is as expected. You will then repeat the process and, as you do so, observe in the Harmonic Analyzer what happens to the harmonic content of the current flowing in the TCR. Finally, you will again repeat the process, this time recording in the Data Table the rms values of the fundamental component, 5 th harmonic component, and 7 th harmonic component of the current flowing in the TCR, as well as the reactive power in the TCR.
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