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| Roll No. | Total No. of Questions : 08 |
| Total No. of Pages : 02 |
M.Tech. (Electrical Power System) (2018 Batch) (Sem.-1)
POWER SYSTEM ANALYSIS
| Subject Code : EEPS-101-18 M.Code: 75731 | Max. Marks : 60 |
| Time: 3 Hrs. |
INSTRUCTIONS TO CANDIDATES :
- Attempt any FIVE questions out of EIGHT questions.
- Each question carries TWELVE marks.
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- Explain the computational procedure for load-flow solution using Newton-Raphson method when all types of buses are available in the system.
- The resistive network shown in the figure is supplying a load 0.5 pu over a line with resistance of 0.4 pu. Bus 1 is assumed to be slack bus, having a voltage of 1.0 pu. FIG.1 Using the Newton-Raphson method, calculate: (minimum 2 iterations)
- Voltage at load bus 2
- Current in line 1-2
- The slack bus power
- Power loss in the line
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- Discuss the mechanism of voltage collapse in a power transmission system.
- A 50 Hz turbo-generator is rated 500 MVA, 22kV. It is Y-connected, solidly grounded and is operating at rated voltage at no load. It is disconnected from the rest of the system. Its reactances are, Xd = X1 = X2 = X0 = 0.05pu.
Find the ratio of the subtransient line current for a L-L fault to the subtransient current for a symmetrical three phase fault on the generator.
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1| M-75731
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- What are the power modelling techniques followed for the Contingency Analysis and which power system model is preferred the most and why?
- What is the significance of the network sensitivity factors for determining and for quick calculation of possible overloads in a power network? Briefly explain the above using the Generation shift factors and Line outage Distribution factors. No derivations are required.
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- What are effective counter measures undertaken to prevent or contain Voltage instability?
- What effective methods are employed for improving the voltage stability?
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- How the PV characteristics with constant load power factor affect the voltage that follows the stability of the power system? Explain in detail using PV curves for various power factors.
- 'The ability to detect and identify bad measurements is significantly important to a load dispatch centre'. How is the ‘Bad Data' Identified so that it could be removed from the vector of measurements before it is processed for a better and reliable State Estimation?
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
2 | M-75731
(S35)-585
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This download link is referred from the post: PTU M.Tech 1st Semester Last 10 Years 2010-2020 Previous Question Papers|| Punjab Technical University