Bundled Conductors



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2/22/2017 Why are Bundled Conductors used in Transmission Lines? | Electrical Concepts Search … Search Electrical Concepts Home Basics Electrical  Electrical Machines  Power System Analysis  Electronics  Interview Questions LATEST POSTS Why are Bundled Conductors Load Factor, Diversity Factor and Capacity Factor used in Transmission Lines?  May 27, 2016 VRLA Battery – Valve Regulated Lead Acid Battery Torque Equation in Share Electrodynamometer Instruments Electrodynamic Type Instrument – Construction and Working Principle Symmetrical Fault and Short Circuit kVA Tinned Copper Wire and Its Benets Why Copper Wire is Preferred than Aluminum in Control Cable? SF6 Circuit Breaker – Construction, Working Principle and Types What is Bundle Conductor?   Resistance Switching in A bundle conductor is a conductor made up of two or more sub­ Circuit Breaker conductors  and  is  used  as  one  phase  conductor.  For  voltages Current Chopping in Circuit greater  than  220  kV  it  is  preferable  to  use  more  than  one Breaker conductor per phase which is known as Bundle conductor.   RECOMMENDED  BOOKS http://electricalbaba.com/why­are­bundled­conductors­used­in­transmission­lines/ 1/4   so  reactance  of  conductors  decreases.   Thereby  to  transmit  maximum  power.  Bundle  conductor  are used in Transmission line.  so  reduced voltage  drop  in  conductors.com/why­are­bundled­conductors­used­in­transmission­lines/ 2/4 . I am listing some important factors:   Reduced Reactance:    Due to bundling of conductors the self GMD of the conductors is increased.2/22/2017 BOOKS Why are Bundled Conductors used in Transmission Lines? | Electrical Concepts Bundle Conductor MY FAVORITE BOOKS     Bundle conductors are used for transmission purpose as it helps in obtaining better voltage regulation and efficiency by reducing the inductance and skin effect present in the power lines.As inductance is reduced and capacitance is increased (due to self GMD) so surge impedance reduces and hence maximum power that can be transmitted is increased.  so  voltage  regulation  improves (decreases). These causes considerable losses in transmission line.  http://electricalbaba.   There  are  many  advantages  of  using  bundled  conductors  in transmission lines.   Reduced Corona Loss:    There  is  a  optimum  spacing  between  sub  conductors  of  a bundled conductor which give minimum gradient on the surface of  sub  conductors  and  hence  highest  critical  disruptive  voltage and  hence  reduced  corona  loss  (see  formula  of  corona  loss  in terms of critical disruptivevoltage)   Reduced Surge Impedance:    Surge  Impedance  of  line  is  given  as  square  root  of  (L/C)  .
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