Lab Report 1.pdf

For an example in firing angle 90 reactive power

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For an example, in firing angle 90°, reactive power consumed by the line was 28.02 var, but after switching in the TSC, the reactive power get compensated and the capacitor supplying the reactive power to the AC line. In the firing angle of 180°, reactive power was almost zero because of null current in TCR, which means TCR not conducting. So that, in TCR, firing angle 90° is considered as conducting state and firing angle 180° is considered as non-conducting state. E1 (V) Line Voltage E3(V) Capacitor Voltage I1(A) Line Current I2(A) Capacitor Current PQS1(Var) Reactive Power Firing angle of Thyristor TSC Switch 228.4 0.313 0.261 0.012 45.5 0 OUT 228.8 0.686 0.159 0.012 28.02 90 OUT 229.8 232.1 0.064 0.102 -4.331 90 IN 266 230.5 0.233 0.011 0.593 180 OUT 242 232 232.4 0.103 -31.97 180 IN Data 4. Status of TSC Switch for various firing angle
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, II. Voltage Compensation of AC Transmission Line Using SVC 1. OBJECTIVE: To compensate the voltage of an AC transmission line using an SVC 2. EQUIPMENTS REQUIRED: In the EMS workstation, these modules were used, S.No. Equipments Quantity 1. Three Phase AC Power Supply 1 3. Three Phase Transformer Bank 1 4. Power Thyristor 1 5. SVC Reactors/Thyristor Switched Capacitors 1 6. Data Acquisition and Control Interface 1 7. Three Phase Transmission Line 1 8. Resistive Load 1 9. Connecting leads As required for connection 3. EXPERIMENTAL SETUP: 1. Connected all the modules in the EMS workstation as shown in the LAB2 Figure1 and LAB2 Figure2. 2. Make sure that AC power supply was turned off and turned the voltage control knob to 0% in the three-phase power supply module. 3. Connected the 24V AC power supply to the Low Power Input of each Power Thyristor module and to the Power Input of each Data Acquisition and Control Interface. 4. Connected the USB port of each Data Acquisition and Control Interface to USB ports of the computer and turned on the 24V AC power supply for Data Acquisition and Control Interface unit.
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, LA LAB2 Figure 2. Circuit for me AB2 Figure 1. AC Source network easuring the reactive power capacity of an SV one TCR and two TSCs VC consisting of
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, 5. Turned on the computer and started the data acquisition software LVDAC_EMS and selected the 240V and 50Hz as operating voltage and frequency. 6. On power thyristor module, set switches S1 to the open position and S2 to the close position, which connects the thyristor Q1, Q2 and Q3 in series with Q4, Q5 and Q6 respectively. 7. Connected the digital outputs 1 and 2 of each Data Acquisition and Control Interface to the TSC1 switching control and TSC2 switching control respectively on the SVC module using the cable DB9 connectors. 8. TCR-TSC type was used in the SVC set up 9. In LVDAC-EMS software, open the SVC Control window and make the following settings: f. Function parameter to Static Var Compensator g. Control Type parameter to Manual Control h. Firing Angle Control parameter of Bridge 1 to Knob.
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