# Electrical Power Engineering

Kindly find below two parts to be solved:

Problem 1

Two single-phase transformers are connected open-Y open-Δ to provide power for a three-phase Y-connected 100-kVA load with a 0.80 lagging power factor and a 50-kVA single-phase load with a 0.90 lagging power factor, as shown in Figure 1. Assume that the primary-side voltage of the bank is 7620/13,200 V and the secondary-side voltage is 240 V. Using the given information, calculate the following:

(a) The line current flowing in each secondary-phase wire.

(b) The current flowing in the secondary winding of each transformer.

(c) The kilovoltampere load on each transformer.

(d) The current flowing in each primary-phase wire and in the primary neutral.

Figure 1: open-Y open-Δ connection

=========================

1

Problem 2

Assume that a 250-kVA distribution transformer is used for single-phase pole mounting. The transformer is connected phase-to-neutral 7200 V on the primary, and 2520 V phase- to-neutral on the secondary side. The leakage impedance of the transformer is 3.5%. Based on the given information, determine the following:

(a) Assume that the transformer has 0.7 pu A in the high voltage winding. Find the actual current values in the high- and low-voltage winding. What is the value of the current in the low-voltage winding in per units?

(b) Find the impedance of the transformer as referred to the high- and low-voltage windings in ohms.

(c) Assume that the low-voltage terminals of the transformer are short-circuited and 0.22 puV is applied to the high-voltage winding. Find the high- and low-voltage winding currents that exist as a result of the short circuit in pu and amperes.

(d) Determine the internal voltage drop of the transformer, due to its leakage impedance, if a 1.2 pu current flows in the high-voltage winding. Give the result in pu and volts.

Tietoa työnantajasta:
( 8 arvostelua ) Sharjah, United Arab Emirates

Projektin tunnus: #15447770

## 17 freelanceria on tarjonnut keskimäärin 35 \$ tähän työhön

100 \$ USD 3 päivässä
(255 arvostelua)
7.2

A proposal has not yet been provided

25 \$ USD 1 päivässä
(45 arvostelua)
5.7
arslanuet123

Electrical engineer here to help u buddy..I am an electrical power engineer and can help u regarding your questions Relevant Skills and Experience Electrical engineering Proposed Milestones \$40 USD - required work

40 \$ USD 1 päivässä
(39 arvostelua)
5.5
shafqatuetian

I will solve mentioned two problems. Please check my profile. Relevant Skills and Experience I am professional Power System Engineer having strong expertise all sort of calculations in power systems. Proposed Milesto Lisää

80 \$ USD 1 päivässä
(15 arvostelua)
4.5
JinDongZhe

Hi,sir I read your project description very carefully. I am very interested in your project. Relevant Skills and Experience I have full skills for your project. I have the Master's degree of power electronics. Thanks Lisää

25 \$ USD 1 päivässä
(16 arvostelua)
4.2
boscogash

Hello, I'm an electrical engineer and an expert in electrical machines and power systems and I'm very interested in your project Relevant Skills and Experience Electrical engineer with expertise and experience in solv Lisää

50 \$ USD 1 päivässä
(3 arvostelua)
3.1
25 \$ USD 1 päivässä
(7 arvostelua)
2.9
10 \$ USD 1 päivässä
(0 arvostelua)
0.0
hongzaii92

I can solve your question. Relevant Skills and Experience electrical engineering Proposed Milestones \$20 USD - 1st

20 \$ USD 1 päivässä
(0 arvostelua)
0.0
amaaz19721972

A proposal has not yet been provided

25 \$ USD 1 päivässä
(0 arvostelua)
0.0
usman992

I m Electrical Engineer with specialization in Electrical Power i will do your task 100%. Relevant Skills and Experience Electrical Engineer with specialization in Electrical Power Proposed Milestones \$45 USD - 1 day

45 \$ USD 1 päivässä
(0 arvostelua)
0.0
25 \$ USD 1 päivässä
(0 arvostelua)
0.0
sheriefinj

I'll solve them Relevant Skills and Experience I'm an electrical engineer. I'm working in electricity from 3 years ago. I have agood experience in this.

25 \$ USD 2 päivässä
(0 arvostelua)
0.0
hosam171

ELECTRICAL ENGINEER Relevant Skills and Experience can solve this problem easily Proposed Milestones \$15 USD - solving

15 \$ USD 1 päivässä
(0 arvostelua)
0.0
Kfana

GRADUATED IN EEE Relevant Skills and Experience Working in this field

30 \$ USD 1 päivässä
(0 arvostelua)
0.0
raphaelmaithya

I have high grade masters of electrical and electronic engineering. I promise to submit professional and high quality work and before deadline. I always satisfy my clients to 100 percent. Relevant Skills and Experienc Lisää

24 \$ USD 1 päivässä
(0 arvostelua)
0.0
jaimealfonsosan

The two exercises resolved are delivered, with calculation memory connection diagrams Habilidades y experiencia relevante I am an electrical engineer, with extensive experience in this type of calculations. Serious Lisää

25 \$ USD 2 päivässä
(0 arvostelua)
0.0