M.E. POWER SYSTEM ENGINEERING UNIT-III (Thyristor Controlled Series Capacitor (TCSC) and Applications) 2 MARKS QUESTIONS:

M.E. POWER SYSTEM ENGINEERING

UNIT-III (Thyristor Controlled Series Capacitor (TCSC) and Applications)

2 MARKS QUESTIONS:

1. State objective of series compensation.
2. What are the basic types of series compensation?
3. Explain how series compensation can be used for power oscillation damping.
4. How to differ TCSC from TSR?
5. Draw the compensating voltage v/s line current characteristics of TCSC.
6. Draw the VI capability curve for single module TCSC.
7. What is the effect of TCSC in SSR problem?
8. Draw the simple model of TCSC.
9. What are the basic functions of module of TCSC?
10. Draw the basic model of TCSC.
11. Define unbalance operation in TCSC.
12. What is Bang-Bang Control?
13. How is the stability limit improved?
14. Define transient over load region and continuous region.
15. What are two major approaches of stability of an operating
16. How the variation of capacitive reactance is achieved in TCSC?
17. Draw the impedance Vs delay angle characteristics of TCSC.
18. What are the types of power scheduling control?
19. Define power swing damping control.
20. Define transient stability control.
21. Define subsynchronous damping control.
22. What are the losses in TCSC?
23. Define constant angle control.
24. What are the oscillations in series compensation?
25. What are the conditions apply for placing TCSC?

Big Questions:

1. Explain with a neat sketch and waveforms the TCSC type of series controller.
2. From the fundamental derive the expression for steady-state thyristor current when the TCSC is operating in the vernier mode.
3. Explain the constant strategy in TCSC application.
4. Explain the different modes of operation of TCSC.
5. What are the important limits that are considered in the capability characteristics of TCSC?
6. Explain variable reluctance model of TCSC and hence derive transient stability, long term stability models.
7. Explain the following controls of TCSC in its closed loop operation with their block diagrams.

                                            i.            Constant current control

                                          ii.            Constant angle control

                                        iii.            Enhanced current control

                                        iv.            Constant power control

8. With a neat block diagram, explain the different modes of operation of TCSC.
9. Enumerate the modelling of TCSC to enhance the system stability.
10. Explain the variable reactance model of TCSC with neat diagram.
11. Explain applications of TCSC.