Question 1A load survey for a semi-urban area in Botswana yielded the folowing data:Group DiversityFactor1.81.21.5Load Category%Diversity FactorValuen/n60ResidentialSmall Industrial30003600507524004000Commercial70Water Pumping & PurificationArea LightingRecreationalEducational InstitutionsHealth Services10006040200060060011.555100Find the daily units consumedb. Determine the load factorC. Find the Capacity of the substation transformer supplying the load assuming a station power factor of 0.85d. Compute the demand factora.-3212345 678

We are authorized to answer three subparts at a time, since you have not mentioned which part you…

A load survey for a semi-ürbän afea in Swana ylelded dle Group Diversity Factor Load Category Value %Diversity Factor n/n 60 1.8 Residential Small Industrial Commercial Water Pumping & Purification Area Lighting Recreational 3000 3600 2400 4000 1.2 50 75 70 60 40 1.5 1000 2000 600 55 Educational Institutions Health Services 100 1.5 600 25-32 2345 678

A load survey for a semi-ürbän afea in Swana ylelded dle Group Diversity Factor Load Category Value %Diversity Factor n/n 60 1.8 Residential Small Industrial Commercial Water Pumping & Purification Area Lighting Recreational 3000 3600 2400 4000 1.2 50 75 70 60 40 1.5 1000 2000 600 55 Educational Institutions Health Services 100 1.5 600 25-32 2345 678

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter8: Symmetrical Components

Section: Chapter Questions

Problem 8.10P

See similar textbooks

Similar questions

System AB is connected to system BC via a 1000 MW tie-line. The total capacity of the online units and the demand of system AB are 10000 MW and 8500 MW, respectively. The total capacity of the online units and the demand of system BC are 20000 MW and 17000 MW, respectively. System AB is importing 500 MW from system BC and all units operate with a common governor droop setting of 5% for both systems. All generating units are operating with sufficient spinning reserve and can respond to frequency changes. AB System capacity=10000 MW 8500 MW 9000 MW AB system load (a) (b) (c) (d) (e) T... 60.15 Hz 60.075 Hz 60.0 Hz 59.925 Hz 59.85 Hz BC system capacity = 20000 MW 500 MW 17500 MW Q34. Determine the new frequency of system AB if the tie-lie interconnecting systems AB and BC trips (a) (b) (c) (d) Q35. Determine the new frequency of system BC if the tie-lie trips 60.15 Hz 60.075 Hz 60.0 Hz 59.925 Hz 59.85 Hz 17000 MW BC system load
I want a solution in less than 30 minutes Often, the network is referred as an infinite bus when a change in input mechanical power or in field excitation to the unit does not cause an appreciable change in a. system frequency or terminal voltage b. Total production cost c. system frequency and terminal voltage d. system frequency alone
The node (busbar) and branch (line) data of a power system are provided in Table Q1.1 and Table Q1.2 respectively. All values in the tables are stated in per unit (p.u.). i) Write the network incidence matrix. ii) Using node 1 (busbar 1) as the reference (slack bus), calculate the line flows using the DC power flow method.
ZA0 @ P A:) * llı. Viber ► RAND.docx Q1. The yearly load duration curve of a certain power station can be approximated as a straight line ; the maximum and minimum loads being 80 MW and 40 MW respectively. To meet this load, three urbine generator units, two rated at 20 MW each and one at 10 MW are installed. Determine (i) installed capacity (ii) plant factor (iii) kWh output per year (iv) load factor Q2. What are the differences between load curve and duration load curve?
The yearly duration curve of a certain plant can be considered as a straight line from 300 MW to 80 MW. Power is supplied with one generating unit of 200 MW capacity and two units of 100 MW capacities each. Determine: Installed Capacity, Load Factor, Plant Factor, Maximum Demand and Utilization Factor.
The yearly load duration curve of a certain power station can be approximated as a straight line ; the maximum and minimum loads being 80 MW and 40 MW respectively. To meet this load, three turbine generator units, two rated at 20 MW each and one at 10 MW are installed. Determine (i) installed capacity (ii) plant factor (iii) kWh output per year (iv) load factor.
The figure below shows the one-line diagram of a four- bus power system. The voltages, the scheduled real power and reactive powers, and the reactances of transmission lines are marked at this one line diagram (The voltages and reactances are in PU referred to 100 MW base. The active power P2 in MW is the last three digits (from right) of your registration number (i.e for the student that has a registration number 202112396, P2 =396). [10] Starting from an estimated voltage at bus 2, bus 3, and bus 4 equals V2 (0) = 1.15<0°, V3 = 1.15 < 0°, V4 1.1< 0°. 1- Specify the type of each bus and known & unknown quantities at each bus. 2- Find the elements of the second row of the admittance matrix (i.e. [Y21 Y22 Y23 Y24]). 3- Using Gauss-Siedal fınd the voltage at bus 2 after the first iteration. 4- Using Newton-Raphson, calculate: |- The value of real power (P2), at bus 2 after the first iteration. Il- The second element in the first row of the Jacobian matrix after the first iteration. 2 P2…
A system consists of four idenital 400 MVA generating units feed- ing a total load of 1016 MW. The intertia constant of each unit is 5 on 400 MVA base. The load changes by 1.5% for a 1% change in frequency. When there is sudden drop in load by 16 MW, obtain the power system time constant (T) with constants H and D expressed on 1600 MVA base.
B) Four regions of peak loads 5 MW, 7 MW, 8 MW and 10 MW are supplied by a generating station. The average annual load factor is 0.6 and the diversity factor at the station is 1.5. Calculate: (i) Annual energy supplied by the station (ii) The maximum demand on the station. (iii) If the installed capacity is greater than maximum demand by 20%, suggest the best number of units should be used to cover the load curve
The per unit bus impedance matrix for the power system network of Figure Q1 is given by; r0.240 0.140 0.200 0.2001 Zbus = i0.140 0.2275 0.175 0.175 0.200 0.175 0.310 0.310 Lo.200 0.175 0.310 0.500 j0.20 j0.15 j0.20 j0.20 j0.50 j0.20 j0.30 3 j0.19 Figure Q1 Evaluate the fault current, bus voltages and line currents during fault, when fault occurs at bus 2 with Z: = j0.0225.
A two-area system connected by tie-line has the following parameters on a 1000 MVA common base Area The units are operating in parallel at the nominal frequency of 50 Hz. A load change of 200 MW occurs in area 1. Determine the new steady state frequency and the change in the tie-line flow?
2. a) Explain the terms load factor and diversity factor. b) Discuss the advantages of interconnected grid system. c) A generating station is to supply four regions of load whose peak loads are 10 MW, 5 MW, 8 MW and 7 MW. The diversity factor at the station is 1-5 and the average annual load factor is 60%. Calculate: (i) the maximum demand on the station, (ii) annual energy supplied by the station and (iii) suggest the installed capacity and the number of units.