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Solutions Manual

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Solutions Manual
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  Solutions Manual Hadi Saadat Professor of Electrical EngineeringMilwaukee School of EngineeringMilwaukee, Wisconsin McGraw-Hill,Inc.  CONTENTS 1 THE POWER SYSTEM: AN OVERVIEW 12 BASIC PRINCIPLES 53 GENERATOR AND TRANSFORMER MODELS;THE PER-UNIT SYSTEM 254 TRANSMISSION LINE PARAMETERS 525 LINE MODEL AND PERFORMANCE 686 POWER FLOW ANALYSIS 1077 OPTIMAL DISPATCH OF GENERATION 1478 SYNCHRONOUS MACHINE TRANSIENT ANALYSIS 1709 BALANCED FAULT 18110 SYMMETRICAL COMPONENTS AND UNBALANCED FAULT 20811 STABILITY 24412 POWER SYSTEM CONTROL 263 i  CHAPTER 1 PROBLEMS 1.1  The demand estimation is the starting point for planning the future electricpower supply. The consistency of demand growth over the years has led to numer-ous attempts to fit mathematical curves to this trend. One of the simplest curvesis P   =  P  0 e a ( t − t 0 ) where  a  is the average per unit growth rate,  P   is the demand in year  t , and  P  0  isthe given demand at year  t 0 .Assume the peak power demand in the United States in 1984 is 480 GW withan average growth rate of 3.4 percent. Using  MATLAB , plot the predicated peak demand in GW from 1984 to 1999. Estimate the peak power demand for the year1999.We use the following commands to plot the demand growth t0 = 84; P0 = 480;a =.034;t =(84:1:99)’;P =P0*exp(a*(t-t0));disp(’Predicted Peak Demand - GW’)disp([t, P])plot(t, P), gridxlabel(’Year’), ylabel(’Peak power demand GW’)P99 =P0*exp(a*(99 - t0)) The result is 1  2  CONTENTS Predicted Peak Demand - GW84.0000 480.000085.0000 496.600686.0000 513.775387.0000 531.544188.0000 549.927389.0000 568.946390.0000 588.623191.0000 608.980492.0000 630.041893.0000 651.831594.0000 674.374095.0000 697.697896.0000 721.827497.0000 746.791698.0000 772.619099.0000 799.3398P99 =799.3398 The plot of the predicated demand is shown n Figure 1. 450500550600650700750800 Peak PowerDemandGW 84 86 88 90 92 94 96 98 100 Year ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIGURE 1 Peak Power Demand for Problem 1.1 1.2  In a certain country, the energy consumption is expected to double in 10 years.

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Oct 15, 2019
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