ZL = 2 + 4j N I Capacitors for pf correction Z, = 2 + 4j N VAB HE VBc VcA Load 1 Load 2 ZL = 2 + 4j N Load 1: Load 2: Total 3-phase S = 5 MVA at pf 0.8 lagging VIL = 25kV Total 3-phase P = 3 MW at pf 0.75 lagging VLL = 25kV
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.
Note that the given 25 kV L-L voltage appears across the loads (right side of ZL) as denoted by Vab, Vbc, and Vca. Since there is no given voltage angle, you may assign angle zero to one of the line-to-neutral voltages.
1. Without the capacitors, what is the magnitude of the current passing through the line impedance ZL?
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