LAB 1_Static Var Compensator.pdf

What happens to the magnitude of the harmonic

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What happens to the magnitude of the harmonic components in the current I TCR as you increase the TCR firing angle from 0° to 180°? Close the Harmonic Analyzer In the SVC Control window, set the TCR Firing Angle parameter to 0° In LVDAC-EMS, open the Data Table window. Set the Data Table to record the rms values of the fundamental component, 5th harmonic component, and 7th harmonic component of the current I (TCR)as well as the reactive power Q TCR in the TCR indicated in the Metering window. In the Data Table window, click on the Record Data button to record thevalues of the fundamental component, 5th harmonic component, and 7th harmonic component of the current I TCR , the reactive power Q TCR , and the TCR firing angle. In the SVC Control window, increase the TCR firing angle to 180° by steps of 5°. For each value of the TCR firing angle, record the parameters in the Data Table. 17. 18 19
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Exercise 1 – Main Components of a Static Var Compensator (SVC) Procedure 9 Static Var Compensator (SVC) In this section, you will switch the TSC in while observing the voltage and current waveforms related to the TSC. You will measure the amount of reactive power supplied by the TSC when it is switched in, and confirm that it is equal to the TSC reactive power rating. 2 0 . On the Data Acquisition and Control Interface, connect Digital Output 1 to Analog Input 1 using a miniature banana plug lead. Connect a common terminal (white) of the Digital Outputs to a common terminal (white) of the Analog Inputs using a miniature banana plug lead. These connections allow the signal (switching control signal of the TSC) provided by Digital Output 1 of the Data Acquisition and Control Interface to be observed on the Oscilloscope. 2 1 . In the SVC Control window, make sure that the TCR Firing Angle parameter is set to 180°. This prevents any current from flowing in the TCR and, thus, ensures that the amount of reactive power absorbed by the TCR is equal to zero. Note: Since the TCR of the SVC is set to a non-cond ்ௌ஼ ucting state, the current ܫ ௌ௏஼ flowing in the SVC corresponds to the current ܫ flowing in the TSC. Also, the reactive power ܳ ௌ௏஼ corresponds to the reactive power ܳ ்ௌ஼ in the TSC. 2 2 . On the Oscilloscope, display the waveforms of the line voltage ܧ ்ௌ஼ across the TSC (input E2 ), the voltage ܧ across one of the capacitors in the TSC (input E3 ), and the current ܫ (input I2 ) flowing in this capacitor. Also, set one of the channels to display the signal at Analog Input 1 (AI-1). This signal, which comes from Digital Output 1 of the Data Acquisition and Control Interface, is rooted to the SVC Reactors/Thyristor Switched Capacitors module in order to switch the TSC in and out. Note It is recommended to set the sensitivity of the channels used to observe the voltages E TSC and E c to 50V/div,the sensitivity of the channel used to observe the current ܫ to 0.5 A/div, the sensitivity of the channel used to observe the TSC switching control signal to 2 V/div, and the time base to 5 ms/div.
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