Standard Voltage Classification The Philippine Grid Code and Philippine Distribution Code define the following voltage levels: Low Voltage: voltage level not exceeding 1 kV Medium Voltage: exceeding 1 kV up to 34.5 kV High Voltage: exceeding 34.5 kV up to 230 kV Extra High Voltage: exceeding 230 kV up to 765 kV Ultra High Voltage: exceeding 765 kV (assumed) Make a Matlab program that will ask the user to input voltage value in kV and the program will classify it according to the standard voltage classification. Sample Output: Input voltage value kV: 138 high voltage Level
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First, we need to prompt the user to input the voltage value in kV. Show more…
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- Sending end power factor - Transmission line efficiency - Voltage regulation of the transmission line You should submit the m-file which should be compatible with version MATLAB 2018 and above. The submitted file should be pdf file, with your first name followed by your ID number (like for example Basem397888). The file should include the script of your code and the results obtained using the designed MATLAB code to solve the following problems for purpose of verification. 1. A 275-kV, 50 Hz, three-phase transmission line is 70 km long. The resistance per phase is 0.035 Ω/km and the inductance per phase is 0.85 mH/km. The shunt capacitance is 0.00112 pF/km. The line is supplying a three-phase load of 300 MVA at 0.85 pf lagging at 275 kV. Use the implemented MATLAB code to find the following. a) Voltage at the sending end. b) Power at the sending end. c) Percentage of voltage regulation. d) Percentage of efficiency. 2. A 345 kV, three-phase transmission line is 130 km long. The resistance per phase is 0.036 Ω per km and the inductance per phase is 0.8 mH per km. The shunt capacitance is 0.0112 µF per km. The receiving end load is 270 MVA with 0.8 power factor lagging at 325 kV. Use your MATLAB code to find the voltage and power at the sending end and the voltage regulation. 3. A 500 kV, 60 Hz, three-phase 400 km transmission line delivers 900 MW of power at 0.8 lagging power factor. The line has the following parameters: r=0.0125 Ω/km , L=0.35 mH/km, C=0.0050 µF/km , G=0 Find the sending end voltage, sending end current and the transmission efficiency using your designed MATLAB code.
Sri K.
Refer to the accompanying data set and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 119.5 volts, and use a class width of 0.2 volt. Does the result appear to have a normal distribution? Why or why not? Complete the frequency distribution below. Voltage (volts) Frequency 119.5 – (Type integers or decimals rounded to the nearest tenth as needed.) Does the result appear to have a normal distribution? Why or why not? A. No, because the frequencies are not equal across the voltage classes. B. Yes, because the frequencies are roughly equal across the voltage classes. C. Yes, because the frequencies start low, reach a maximum, then become low again, and are roughly symmetric about the maximum frequency. D. No, because the frequencies are randomly distributed. E. No, because the frequencies are roughly equal across the voltage classes. Voltage Measurements From a Home Day Home (volts) Day Home (volts) Day Home (volts) Day Home (volts) 1 119.7 8 119.7 15 120.1 22 119.9 2 120.1 9 120.0 16 119.9 23 119.8 3 119.9 10 120.1 17 119.7 24 119.7 4 120.1 11 120.0 18 119.8 25 119.9 5 120.1 12 119.9 19 119.9 6 119.6 13 119.9 20 120.3 7 119.9 14 119.8 21 120.2
Lucas F.
Refer to Data Set 13 in Appendix $B$ and use the 40 voltage measurements from the generator. Construct a frequency distribution with seven classes. Begin with a lower class limit of 123.9 volts, and use a class width of 0.20 volt. Using a very loose interpretation of the relevant criteria, does the result appear to have a normal distribution? Compare the frequency distribution to the result from Exercise 21.
Summarizing and Graphing Data
Frequency Distributions
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