World Of Electrical

Requirements Of Transmission Line Requirements Of Transmission Line All the Requirements of transmission line is mentioned below: Requirements Of Transmission Line: ✓Transmission lines should transfer power for particular distance economically. ✓ Transmission of power should be done for a given power factor. ✓Transmission of power should be done within desired limit of voltage regulation, efficiency and losses. ✓Transmission should withstand wind pressure and temperature variations. May You Like to Read: Types of Electric Drives Future of Electric Cars Objectives of Electrical Safety Terms Related to Electrical Safety ✓ In a transmission line formation of corona and respective loss should be less. ✓Requirement of charging current for a transmission line for transfer of power should be less. ✓Transmission lines should be mechanically strong, so supply of power should not be affected due to mechanical

Surge Impedance Loading or SIL - Definition, Formula Surge Impedance Loading or SIL - Definition, Formula What is Surge Impedance Loading? Surge Impedance Loading or SIL is the power demand or load supplied by the transmission line having no resistance by considering unity load power factor. Explanation of Surge Impedance Loading or SIL In case of transmission line surge Impedance Loading is depends on inductance and capacitance of the transmission line. Formula of Surge Impedance Loading or SIL Formula of Surge Impedance Loading or SIL Where, L - Inductance of transmission Line             C - Capacitance of transmission Line   Surge Impedance Loading is independent of the transmission line length.  In this case I^2 X of the transmission line provides charging kVA of the transmission line. SIL or Surge Impedance Loading can also be given as below formula: Formula of Surge Impedance Loading or SIL Formula of Surge Impedance Loadin

Selection and Specifications Of Transmission Line Selection and Specifications Of Transmission Line Following factors are affecting the selection and specifications of transmission lines: ✓ Size of transmission conductors ✓ Spacing and distance between conductors ✓ Insulator types ✓ Insulation co-ordination ✓ Voltage regulation ✓ Power losses ✓ Voltage level of transmission line ✓ Tower designs ✓ Clearance levels ✓ Noise emission ✓ Corona loss ✓ Weather conditions e.g. temperature, wind etc. ✓ Mechanical strength of selected conductors ✓ Air pollution In high temperature regions, conductor material chosen for transmission line should  have higher temperature coefficient of resistance. Wind load affects the sag clearance putting more pressure on transmission lines. Mechanical strength of selected conductors should be higher to avoid breaking of conductor due  to wind pressure or increase in temperature etc. Moisturised air or polluted air causes chemical