A 40-km, 220-kV, 60-Hz three-phase overhead transmission line has a per-phase resistance of 0.15 W/km, a per-phase inductance of 1.3263 mH/km, and negligible shunt capacitance. Using the short line model, find the ABCD parameters. The sending-end voltage, voltage regulation, sending-end power, and transmission line efficiency when the line is supplying a three-phase load of: (a) 381 MVA at 0.8 power factor lagging and at 220 kV, (b) 381MVA
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 40-km, 220-kV, 60-Hz three-phase overhead transmission line has a per-phase resistance
of 0.15 W/km, a per-phase inductance of 1.3263 mH/km, and negligible shunt capacitance.
Using the short line model, find the ABCD parameters. The sending-end voltage, voltage
regulation, sending-end power, and transmission line efficiency when the line is supplying
a three-phase load of: (a) 381 MVA at 0.8 power factor lagging and at 220 kV, (b) 381MVA
at 0.8 power factor leading and at 220 kV. How does the load type (capacitive or inductive)
affect the sending voltage magnitude, voltage regulation and efficiency?
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