Download PTU M.Tech. EE 1st Semester 75732 POWER SYSTEM DYNAMICS I Question Paper

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Total No. of Pages : 02

Total No. of Questions : 08

M.Tech. (Electrical Power System) (2018 Batch) (Sem.-1)

POWER SYSTEM DYNAMICS - I

Subject Code : EEPS-102-18

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M.Code: 75732

Time: 3 Hrs.

Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1. Attempt any FIVE questions out of EIGHT questions.

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2. Each question carries TWELVE marks.
3. Assume any missing data appropriately.

1. a) Explain advantages of per unit system of parameter measurement.
   b) Prove that power remains unaltered when three phase system quantities are transformed to two-phase equivalent quantities.
2. Explain the transformation of quantities from rotating axes (a, ß, 0 ) to stationary axes (d,q,0)

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3. A 555 MVA, 24kV. 0.95 p.f. 60Hz, phase 2 pole synchronous generator has the following inductances and resistances associated with the stator and field windings :
   laa (mH) = 1.6379 + 0.0458cos(2?+(p/3))
   lafd (mH) = 3.2758+0.0458cos(2?)
   Lffd (mH) = 40.0cos(2?)
   Ra (O) = 0.0715
   

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   Rfa (O) = 576.92
   com
   0.0031
   1. Determine Lq in henrys
   2. If the stator leakage inductance L_l is 0.05129 mH, determine Laq in henrys.
   3. Using the machine rated values as base values for the stator quantities, determine the per unit values of the Laq following in the Lad-base reciprocal per unit system.

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4. a) Write state-space model of induction machine using d-q axis theory.
   b) Explain connection matrix [C] used in Park's transformation.

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5. a) Explain why armature dynamics are neglected in small signal analysis of power system.
   

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   b) Explain the eigen properties of the state matrix.
6. a) Draw and explain block diagram for power system stabilizer model.
   b) Explain the procedure for linearization of non-linear equations.
7. Figure below shows the single line diagrams of thermal generating station consisting of four 555MVA, 24kV, 60Hz units.
   

   This download link is referred from the post: PTU B.Tech 7th Semester Last 10 Years Previous Question Papers|| Punjab Technical University 2011-2021

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