With calculation, prove that 3 phase distribution lines have less drop voltage and Power losses than...
With calculation, prove that 3 phase distribution lines have less drop voltage and Power losses than 1 phase distribution lines. Thanks
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With calculation, prove that 3 phase distribution lines have
less drop voltage and Power losses than...
Two three-phase power transmission lines with a nominal operating voltage of 220 kV and a frequency...
Two three-phase power transmission lines with a nominal
operating voltage of 220 kV and a frequency of 60 Hz are connected
in series as shown below.
Per-phase constants of the first 110 km long energy transmission
line (E.İ.H.-1); r = 0.01035Ω / km, L = 1.554 mH / km, and C =
7.387 ∙ 10-3 µF / km. Constants per phase of the second 100 km long
energy transmission line (E.İ.H.2); Zh = 1.035 + j58.58 Ω / phase
and...
Question 25 A balanced 3-phase Y-connected power supplies an office building through a four-wire distribution. The...
Question 25 A balanced 3-phase Y-connected power supplies an office building through a four-wire distribution. The circuit operates at 60 Hz. The voltage at the source is such that ? is taken in reference value and its value is 380 V in rms value and phase sequence ABC (positive). All the distribution line conductors are of the same material and have equal cross-sections. Considering the length of the line and the characteristics of the electrical cables, the impedances neutral conductors...
Q3. Prove that, "Line voltage = 3 x Phase voltage" by using a three-phase wye connected source and wye connecte...
Q3. Prove that, "Line voltage = 3 x Phase voltage" by using a three-phase wye connected source and wye connected load in Simulink. [30]
Q3. Prove that, "Line voltage = 3 x Phase voltage" by using a three-phase wye connected source and wye connected load in Simulink. [30]
3. A GE 3-phase power transformer is tested at 10,000KVA at is voltage rating of 34.4KV/13.2KV,...
3. A GE 3-phase power transformer is tested at 10,000KVA at is voltage rating of 34.4KV/13.2KV, 60Hz. The test results are as follows: H.V. Resistance=2.06022 Per Cent Exciting Current=250% L.V. Resistance: 105012 Load Loss=66,467Watts No Load Loss=12,080Watts Per Cent Z=6.84% Company system planning engineers determined that the transformer should be operated at 33,540VAC phase-phase and at a load of 11,200KVA. a) Solve for the no load losses at the new sub-transmission voltage of 33,540VAC b) Solve for the load losses...
Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW...
Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW at 0.8 power factor lagging. The line impedance is (1.4 +J1.6) Ω per phase between generator G1 and the load, and (0.8 +jl ) Ω per phase between generator G2 and the load. If generator Gl supplies 15 kW at 0.8 power factor lagging, with a terminal voltage of 460 V line- to-line, determine 1. The voltage at the load terminals. 2. The voltage...
The following diagram shows a basic structure of energy distribution. In the thermoelectric plant, a three-phase...
The following diagram shows a basic structure of energy
distribution. In the thermoelectric plant, a three-phase generator
feeds an elevator transformer which has an output of 230kVrms in
each of its phases. The relation that is had in this transformer is
1:60. The transformer acts as a balanced three-phase source which
supplies two parallel three-phase networks represented by the
high-voltage lines. These high-voltage lines have a resistance per
line of Rw = 10Ω and are connected to a step-down transformer...
Problem 3. Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs...
Problem 3. Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW at 0.8 power factor lagging. The line impedance is (1.4 + j1.6) 12 per phase between generator G1 and the load, and (0.8 + jl) 2 per phase between generator G2 and the load. If generator G1 supplies 15 kW at 0.8 power factor lagging, with a terminal voltage of 460 V line-to-line, determine: 1. The voltage at the load terminals. 2....
A 3-phase system is more desirable because it uses less number of wires than a single-phase...
A 3-phase system is more desirable because it uses less number of wires than a single-phase system to transmit the same power capacity Select one O True O False
QUESTION 3 3. Check the correct options for power distribution network. (If it's correct, type “1...
QUESTION 3 3. Check the correct options for power distribution network. (If it's correct, type “1" in the brackets; if it's wrong, type "O") (1). The current flows through the resistance of the power network will drop the voltage supply. (2). The current changes through the inductance of the package will drop the voltage supply (3). For nominal voltage supply of 1V, the wanted guarantee the actual voltage supply should be 0.9V - 1V. (4). Bypass capacitor has highest impedance...
1 A single phase AC system Consider a single phase AC distribution system in which there...
1 A single phase AC system Consider a single phase AC distribution system in which there a single home connected to a 10kVA service transformer. Let’s assume that the primary of the distribution transformer can be modeled as an ideal 240V (rms) AC source and that the effective impedance of the transformer is 2% resistance and 3% reactance. (See lecture notes for converting % to Ohms). Connected to the secondary of the transformer is 200 ft of #6 AWG aluminum...
Two three-phase power transmission lines with a nominal
operating voltage of 220 kV and a frequency of 60 Hz are connected
in series as shown below.
Per-phase constants of the first 110 km long energy transmission
line (E.İ.H.-1); r = 0.01035Ω / km, L = 1.554 mH / km, and C =
7.387 ∙ 10-3 µF / km. Constants per phase of the second 100 km long
energy transmission line (E.İ.H.2); Zh = 1.035 + j58.58 Ω / phase
and...
Q3. Prove that, "Line voltage = 3 x Phase voltage" by using a three-phase wye connected source and wye connected load in Simulink. [30]
Q3. Prove that, "Line voltage = 3 x Phase voltage" by using a three-phase wye connected source and wye connected load in Simulink. [30]
3. A GE 3-phase power transformer is tested at 10,000KVA at is voltage rating of 34.4KV/13.2KV, 60Hz. The test results are as follows: H.V. Resistance=2.06022 Per Cent Exciting Current=250% L.V. Resistance: 105012 Load Loss=66,467Watts No Load Loss=12,080Watts Per Cent Z=6.84% Company system planning engineers determined that the transformer should be operated at 33,540VAC phase-phase and at a load of 11,200KVA. a) Solve for the no load losses at the new sub-transmission voltage of 33,540VAC b) Solve for the load losses...
Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW at 0.8 power factor lagging. The line impedance is (1.4 +J1.6) Ω per phase between generator G1 and the load, and (0.8 +jl ) Ω per phase between generator G2 and the load. If generator Gl supplies 15 kW at 0.8 power factor lagging, with a terminal voltage of 460 V line- to-line, determine 1. The voltage at the load terminals. 2. The voltage...
The following diagram shows a basic structure of energy
distribution. In the thermoelectric plant, a three-phase generator
feeds an elevator transformer which has an output of 230kVrms in
each of its phases. The relation that is had in this transformer is
1:60. The transformer acts as a balanced three-phase source which
supplies two parallel three-phase networks represented by the
high-voltage lines. These high-voltage lines have a resistance per
line of Rw = 10Ω and are connected to a step-down transformer...
Problem 3. Two three-phase generators supply a three-phase load through separate three-phase lines. The load absorbs 30 kW at 0.8 power factor lagging. The line impedance is (1.4 + j1.6) 12 per phase between generator G1 and the load, and (0.8 + jl) 2 per phase between generator G2 and the load. If generator G1 supplies 15 kW at 0.8 power factor lagging, with a terminal voltage of 460 V line-to-line, determine: 1. The voltage at the load terminals. 2....
A 3-phase system is more desirable because it uses less number of wires than a single-phase system to transmit the same power capacity Select one O True O False
QUESTION 3 3. Check the correct options for power distribution network. (If it's correct, type “1" in the brackets; if it's wrong, type "O") (1). The current flows through the resistance of the power network will drop the voltage supply. (2). The current changes through the inductance of the package will drop the voltage supply (3). For nominal voltage supply of 1V, the wanted guarantee the actual voltage supply should be 0.9V - 1V. (4). Bypass capacitor has highest impedance...
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