The contract load of a medium scale Industry (MSI) at 11 kV, 50 Hz is 0.8 MW, but the maximum demand of that industry in last two years has not exceeded 0.6 MW at average power factor of 0.75, while as per Oman electricity norms power factor must be maintained 0.92 to avoid any penalty. Find the following: i) Capacitor rating to avoid power factor penalty ii) The capacitance of the capacitor bank 13 ELEC4242-Power System Quality

The contract load of a medium scale Industry (MSI) at 11 kV, 50 Hz is 0.8 MW, but the maximum demand of that industry in last two years has not exceeded 0.6 MW at average power factor of 0.75, while as per Oman electricity norms power factor must be maintained 0.92 to avoid any penalty. Find the following: i) Capacitor rating to avoid power factor penalty ii) The capacitance of the capacitor bank 13 ELEC4242-Power System Quality

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Draw the power factor triangle showing the different labelled sides. Illustrate a lagging power factor using a sinusoidal waveform. (d) List 2 negative effects of a poor power factor (e) How can a lagging power factor be corrected?
Solve it quickly please
13.) Calculate the inductance or capacitance in series for the impedance 7.52-53.13° ohms. Assume the frequency to be 50 Hz.
In an installation there is a three-phase load of 300 kVA with a power factor of 0.8 behind, in parallel with a three-phase load of 150 kVA with a power factor of 0.6 ahead. A pure reactive element is connected in parallel, and a unity power factor is obtained at the power input. Indicate the reactant of the element, with a positive sign if it is a bank of reactors, or with a negative sign if it is a bank of capacitors. Just put the corresponding sign followed by the numerical value, without units. The numerical value must correspond to the three-phase kVARS. You can use integer values with no decimal places or up to two decimal places
4. An alternating current varying sinusoidally with a frequency of 50 Hz has an ms value of 40 A. Find: a. The instantaneous value of 0.0025 seconds after passing through maximum positive value, b. The time measured from the maximum value when the instantaneous current is 14.14 A.
Example 8.31 A 3-phase balanced load connected across a 3-0, 400 V ac supply draws a line current of 10 A. Two wattmeters are used to measure input power. The ratio of two wattmeter readings is 2: 1. Find the readings of the two wattmeters. EN
Please please answer all subparts. I will really upvote
V1 ZT Z2 V2 V3 Z5 Z3 Z4 Figure 18.4 See Figure 18.4. In a general bridge circuit such as this, what condition will result in a balanced bridge? Z1Z4 = Z2Z3 Z3 = Z4 O ZĄZ3 = Z2Z4 O Z1Z2 = Z3Z4
Electrical load that draws current whose impedance varies throughout the cycle of the input ac voltage waveform is known as nonlinear load. True False
Two relays each with 20-ohm resistance and 0.16-henry inductance are connected in series. What is the equivalent impedance?a. 20 + j102.2 ohms c. 20 + j95.32 ohmsb. 20 + j120.63 ohms d. 10 + j25.32 ohms
The output of a station with two alternators in parallel is 40MW at 0.75 power factor lagging. One machines is loaded to 20,000KW at 0.8 power factor lagging. Determine the: a. KVA rating and power factor of the load b. KVA rating and power factor of the other alternator
7.73 To correct the power factor problems of the motor in Problem 7.72, the company has decided to install capacitors as shown in Figure P7.73. Assume rms values. a. What capacitance must be installed to achieve a unity power factor if the line frequency is 60 Hz? b. Repeat part a if the power factor is to be 0.85 (lagging). 50 j62 50 jó N 50 j6 2 Figure P7.73 all ele ww