Code No: 410258 IV-B.Tech I-Semester Supplementary Examinations, May 2004 POWER SYSTEM OPERATION AND CONTROL (Electrical and Electronics Engineering) Time: 3 hours Max. Marks: 70 Answer any FIVE questions All questions carry equal marks --1. Derive the co-ordination equation for the optimal scheduling of hydro-thermal interconnected power plants.
Give algorithm for economic allocation of generation among generators of a thermal system taking into account transmission losses. Give steps for implementing this algorithm, and also derive necessary equations.
3.
Discuss the Dynamic programming method to solve Unit commitment problem in power systems.
4.
Discuss optimal power flow problems with and without inequality constraints. How are these problems solved?
5.a) b)
Write notes on (i) Control area concept. (ii) Area control error. Explain proportional plus integral control for load frequency control for a single area system.
6.a)
What is load frequency problem? Briefly explain the various frequency control strategies used to regulate the power system frequency. Two power stations A & B each have regulation of 0.1 p u and stiffness K of 1.0 p. u. The capacity of system A is 1350 MW & of B 1150 MW. The two systems are interconnected through a tie line and are initially at 60 Hz. If there is 100 MW load change in system A, calculate the change in the steady-state values of frequency and power transfer P12 with the participation of governor control.
7.a)
Describe the effect of connecting shunt reactors connected in high voltage transmission system. Describe the features of saturated reactor compensator with its V/I characteristics.
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2.
A three(S)phase transmission line has resistance and inductive reactance of 25 and 90 respectively. With no load at the receiving end a synchronous compensator there takes a current lagging by 90, the voltage at the sending end is 145 kV and 132 kV at the receiving end. Calculate the value of the current taken by the compensator. When the load at the receiving end is 50 MW, it is found that the line can operate with unchanged voltages at sending and receiving ends, provided that the compensator takes the same current as before but now leading by 90. Calculate the reactive power of the load.
Discuss the Dynamic programming method to solve Unit commitment problem · in power systems. ... by 90°. Calculate the reactive power of the load. ^^^. OR.
Write a C++ program that creates a data file containing list of Telephone numbers · and names. Use a class object to store set of data. 8. Write short notes on:.
The km value of an enzyme is known to be 0.01 mol/l. To measure the maximum rate of reaction rate catalyzed by the enzyme, the initial rate of reaction was ...
7. a) How will you prepare Thiophene? What are its chief uses? b) What will happen when Quinoline and Isoquinoline are treated with · alkaline KMnO4 solution ...
Make a survey of petroleum reserves in the world and compare them with the · reserves available in India. Discuss the various exploration methods for finding.
1. (a) Using slip gauges, rollers and micrometers, explain the procedure for determi- · nation of : · i. Small end and big end diameters of a taper plug gauge.
1.a) Draw a neat sketch of optical microscope and the trace of rays through the optical · system from the ... c) Explain the term resolving power of a microscope.
Code No: 320554. III-B.Tech. II-Semester Supplementary Examinations, April/May-2004 · LANGUAGE PROCESSORS · (Common to Computer Science and Engineering and Computer Science and · Information Technology) · Time: 3 Hours · Max. Marks: 70 · Answer any F
BASIC CLINICAL SCIENCES-II · (Bio-Medical Engineering) ... radiation hazards?. [8] · 7. (a) Explain how Nuclear Medicine is useful in the imaging of CNS?
represented by three entity sets like AIRPORT,AIRPLANE and FLIGHT. Assume suitable attributes for each entity. 3.a) Differentiate between BCNF and 3NF.
(b) Explain with the help of a block diagram the water cooling system of diesel · power plant · 4. Explain cavitations, runway speed and the overall cost of a ...
7.a) What is non-destructive testing of materials? What are the aims of NDT? List out · various NDT methods. b) Explain in detail the X-ray radiography method.
(a) What is congruent melting alloy? Does eutectic alloy come under the above class? (b) Explain miscibility gap. (c) Discuss the coordinates of a phase diagram ...
2.a) Derive an expression for the hourly loss in economy due to error in the · representation of input data. ... from the power plant bus bars. - x - · AjntuWorld.in.
Jan Heufer â. *TU Dortmund University, Department of Economics and Social Science, 44221 Dortmund,. Germany. .... 3 More Details on the Data Analysis.
product differentiation), Firm 2's net profit is negative (gross profit is zero, but the costs are positive). If Ï = 0, the profit is zero. Moreover c2(0) = 0, which implies Ï2(0)âqc2(0) = Ï2(0) > 0. Therefore, Firm 2's net profit is increasing
recovery, not from preburial damage). ... Two of these were based on the data matrices in references 5-7 that were analyzed with ..... Fennoscandian High, LBM = London Brabant Massif, LH = Lusatian High, NGH = North German High,.
through the institution, the pivotal member signals support, the audience supports x, and ..... For the pivotal member, there are two cases to check. Recall that D ...
gaze fixation point is detected by an eye tracker. âindicates equal contribution. (a) Random ... 1) confirms quanti- tatively our intuition, that the location of the hands are in- deed important for learning about hand-object interactions. Based on
