VISION INSTITUTE OF TECHNOLOGY
Assignment#1
- Explain the following terms used in EHVAC transmission systems with suitable diagrams (i) sub-transient reactance, (ii) transient reactance, (iii) synchronous reactance of a source, (iv) a.c. and d.c. components and (v) the interrupting current capacity of a circuit breaker.
- Explain clearly how overvoltages are generated when interrupting (i) low.
- inductive current and (ii) low capacitive current. Draw a figure showing ferroresonance condition in a network when two poles of a circuit breaker are open, and one pole is closed. Also, explain the methods of reduction of switching surges on EHV systems.
- Explain the functions and role of smoothing rectors in HVDC link operations with mathematical justification.
- Explain the potential applications and types of Multiterminal DC systems.
- Derive the relation for the maximum surface gradient for the bundled conductor.
- having two conductors.