) A 3-phase, 50 Hz, 132 kV overhead line of length 150 km has conductors placed in a horizontal plane. The diameter of the conductors is 20 mm and assume complete transposition arrangement is applied. (i) Analyse the charging current per phase when the conductors spacing are set at 4 m (ii) Investigate the range of conductor spacing that should be chosen in order to reduce the magnitude of the charging current per phase in Q2 (b)(i) by 5% or more.
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.
(b) A 3-phase, 50 Hz, 132 kV overhead line of length 150 km has conductors placed in a
horizontal plane. The diameter of the conductors is 20 mm and assume complete
transposition arrangement is applied.
(i) Analyse the charging current per phase when the conductors spacing are set at 4 m
(ii) Investigate the range of conductor spacing that should be chosen in order to reduce
the magnitude of the charging current per phase in Q2 (b)(i) by 5% or more.
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