A three-phase circuit with balanced source and load operating at 60Hz is formed by a Y-source connected to a Y-linked load without the use of neutral. Given that the line voltage is 127Vef, the phase sequence is ABC and the load is composed of three impedances in the value of z= 2 – j5: a) Show the circuit diagram. b) Determine the phasors of the phase voltages and the current lines and phase currents in the charge. c) Present the phasor diagram of the quantities resulting from item b)
Short Transmission Line
A short transmission line is a transmission line that has a length less than 80 kilometers, an operating voltage level of less than 20 kV, and zero capacitance effect.
Power Flow Analysis
Power flow analysis is a topic in power engineering. It is the flow of electric power in a system. The power flow analysis is preliminary used for the various components of Alternating Current (AC) power, such as the voltage, current, real power, reactive power, and voltage angles under given load conditions and is often known as a load flow study or load flow analysis.
Complex Form
A power system is defined as the connection or network of the various components that convert the non-electrical energy into the electric form and supply the electric form of energy from the source to the load. The power system is an important parameter in power engineering and the electrical engineering profession. The powers in the power system are primarily categorized into two types- active power and reactive power.
A three-phase circuit with balanced source and load operating at 60Hz is
formed by a Y-source connected to a Y-linked load without the use of neutral.
Given that the line voltage is 127Vef, the phase sequence is ABC and the load is
composed of three impedances in the value of z= 2 – j5:
a) Show the circuit diagram.
b) Determine the phasors of the phase voltages and the current lines and phase currents in the
charge.
c) Present the phasor diagram of the quantities resulting from item b)
d) Determine the apparent power and the total average power dissipated by the load.
Also determine the power factor of the load. In addition, introduce the
corresponding power triangle.
e) Repeat parts a) through d) now assuming the impedances z are
linked at ∆.
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