HVDC
- Obtain the mathematical model of DC converter, including converter control?
- Explain the solution of DC load flow?
- Classify the solution methodology for AC –DC load flow solution and explain?
- Briefly explain about converter faults in HVDC systems?
- Write short notes on over voltage protection in converter station?
- Explain the protection against over currents?
- Give a brief discussion on smoothing reactor, protection on DC line and DC breaker?
- Deduce the equation for effective current values of the nth harmonic?
- What are the adverse effects of harmonics and explain how we can reduce the harmonics?
- Discuss about types of filters and explain how a single tuned filter can be designed?
- Write short notes on space charge field, audible noise and DC line insulators?
- Discuss the basic principles of protection against over voltages?