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# Previous Year Exam Questions for Power System Operation and Control - PSOC of 2018 - BPUT by Bput Toppers

• Power System Operation and Control - PSOC
• 2018
• PYQ
• Biju Patnaik University of Technology Rourkela Odisha - BPUT
• Electrical Engineering
• B.Tech
• 3509 Views
Page-1

#### Previous Year Exam Questions for Power System Operation and Control - PSOC of 2018 - BPUT by Bput Toppers / 2

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Registration No : Total Number of Pages : 02 B.Tech PCEL4401 7th Semester Back Examination 2018-19 POWER SYSTEM OPERATION AND CONTROL BRANCH : EEE, ELECTRICAL Time : 3 Hours Max Marks : 70 Q.CODE : E530 Answer Question No.1 which is compulsory and any FIVE from the rest. The figures in the right hand margin indicate marks. Q1 a) b) c) d) e) f) g) h) i) j) Q2 a) Answer the following questions : What will be the reactive power and bus voltage when the generator bus is treated as load bus? What do you understand by one-line diagram of the power system and explain its importance? A generator has a per unit value of 15% on a 50 MVA, 132 kV base. What would be the per unit value of the same on a 200 MVA, 66 kV base? Define steady state stability? How the elements of Jacobian matrix are computed? What is meant by Q-V control of power system? Why is the function of fly ball speed governor in load frequency control? What is the role of tie-line in multi-control-area system? The power generated by two plants are: P1  50 MW , P2  40 MW (2 x 10) If the loss coefficients are B11  0.001, B22  0.0025, and , B12  0.0005 , Calculate the power loss. An infinite bus of 1 pu is fed from a synchronous machine having E = 1.1 pu. If thetransfer reactance between them is 0.5 pu. Determine the steady state power limit. For the 3-bus system shown in Fig.1. all transmission lines have series impedance of 0.03 + j0.lpu and total shunt admittance of j0.02 pu. (i) Calculate YBus matrix. (ii) Write the power flow equations Slack Bus (2 + 3) 2 1 SD2 = 1.5 +j1.0 V1 = 1.05 <0˚ 3 | V3 |= 1.02 P3 = 0.6 Fig. 1 Q3 b) Obtain the voltage magnitudes and angles at bus 2 & 3 after first iteration using Gauss-Seidel algorithm. (5) a) Develop necessary equation and describe the load flow solution using GaussSeidel method? (5)