energy conversation system
pinkybanalaAdvanced power system analysis
1.guass seidel method (10m)
2.An equivalent admittance network
3.network incidence matrix and Y bus
4.Node elimination
5.modification of existing Z bus
6.calculation of z bus elements from y bus
7.mutually coupled branches in z bus
8.N-R method
(all answers in theory)
Advanced power system protection
1. explain what are the amplitude and phase comparators with neat diagram?(10marks)
2. explain what are the advantages of static relay over the electromechanical relay and mention how the drawback can be reduced for static relay?
3. discuss how the amplitude comparator can be converted to phase comparator and vice versa?
4. define static over current relay? Explain instantaneous over current relay with neat diagram?
5. explain definite time over current relay and inverse time over current relay with neat diagram?
6. define relays? Explain basic relay circuit and explain how the relay are classified based on the technologies?
HVDC
1.explain necessity of hvdc tr lines ?
2. explain clearly limitations of hvdc tr lines?
3. give a neat sketch of diff hvdc links and why is bipolar line more commonly used?
4. explain in detail the superiority of technical performance of hvdc lines to that of ehvac lines?
5. define the terms transient reliability and short ckt ratio as applied to the transmission line? discuss the effect of these factors on the performance of a dc links?
6. what are the advantages of voltage source controlled IGBT hvdc schemes?
7.discuss the adv and dis adv of both mercury valves rectifier and thyristor rectifier? Renewable energy systems(res)
1.wat is the need of res?
2.write photo voltaic cell structure and discuss efficiency improvement techniques?
3.what are the diff methods of solar energy concentration?
4.why the solar energy power is not getting properly in society? Suggest techniques to use them by all people of
1.guass seidel method (10m)
2.An equivalent admittance network
3.network incidence matrix and Y bus
4.Node elimination
5.modification of existing Z bus
6.calculation of z bus elements from y bus
7.mutually coupled branches in z bus
8.N-R method
(all answers in theory)
Advanced power system protection
1. explain what are the amplitude and phase comparators with neat diagram?(10marks)
2. explain what are the advantages of static relay over the electromechanical relay and mention how the drawback can be reduced for static relay?
3. discuss how the amplitude comparator can be converted to phase comparator and vice versa?
4. define static over current relay? Explain instantaneous over current relay with neat diagram?
5. explain definite time over current relay and inverse time over current relay with neat diagram?
6. define relays? Explain basic relay circuit and explain how the relay are classified based on the technologies?
HVDC
1.explain necessity of hvdc tr lines ?
2. explain clearly limitations of hvdc tr lines?
3. give a neat sketch of diff hvdc links and why is bipolar line more commonly used?
4. explain in detail the superiority of technical performance of hvdc lines to that of ehvac lines?
5. define the terms transient reliability and short ckt ratio as applied to the transmission line? discuss the effect of these factors on the performance of a dc links?
6. what are the advantages of voltage source controlled IGBT hvdc schemes?
7.discuss the adv and dis adv of both mercury valves rectifier and thyristor rectifier? Renewable energy systems(res)
1.wat is the need of res?
2.write photo voltaic cell structure and discuss efficiency improvement techniques?
3.what are the diff methods of solar energy concentration?
4.why the solar energy power is not getting properly in society? Suggest techniques to use them by all people of