a) Consider a positive (abc) sequence balanced star-connected (Y) three phase supply. If the instantaneous voltage of phase a is given by van (t) = √2Vp sin wt. i) Write expressions for the instantaneous voltages of phase b and phase c. Show that Vab = √3 Vp4300. The line-to-line voltage of lines a and b of a positive sequence star-connected (Y) balanced three-phase supply is given as vab (t) = 2082600 V. Draw the phasor diagram showing the line-to-line voltages and phase voltages of the three-phase supply. ii) iii) iv) A three-phase star-connected (Y) balanced load draws a line current of ly from a balanced three-phase source. What is the line current, if the same load is connected in delta (A) configuration and supplied by the same three-phase source.
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.
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