A 3-phase overhead transmission line delivers a load of 80 MW at 0.8 p.f. lagging and 220 kV between the lines. Its total series impedance per phase and total shunt admittance per phase are 200 ohms with an angle of 80 degrees and 0.0013 mho with an angle of 90 degrees per phase respectively. Using nominal-T method, determine the following: (i) A, B, C, D constants of the line (ii) Sending end voltage (iii) Sending end current
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 3-phase overhead transmission line delivers a load of 80 MW at
0.8 p.f. lagging and 220 kV between the lines. Its total series
impedance per phase and total shunt admittance per phase are 200
ohms with an angle of 80 degrees and 0.0013 mho with an angle of
90 degrees per phase respectively. Using nominal-T method,
determine the following:
(i) A, B, C, D constants of the line
(ii) Sending end voltage
(iii) Sending end current
(iv) Sending end power factor
(v) Transmission efficiency of the line
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