Mafiya na Kukuna Kable Da Dama

Me kawo Bundled Conductors?

A lura ne da na iya tabbatar da transmission lines inda ana amfani da conductor daɗi su a kan fase bittar da waɗanda ana amfani da mafi yanayi. Wata sashen mutanen kasa suna ce spacers tana gudanar da conductors na fase. Spacers tana taimakawa da ci nasara da darasi masu zama bayan conductors, tana ba da damar ci nasara da karkashin conductors da duka, kuma tana ba da damar ci nasara da yin kafuwa. Fase zaka iya da duwatsu, talatu, ko hudu conductors. Tushen da ake bi a nan tana nuna bundled conductors da spacers don tare da configurations.

Har conductor da aka gudanar da shi da spacer ya zama na wata fase, kuma za a gudanar da tare da conductors ta hanyar tare da single circuit transmission ko tare da double circuit transmission.

Ana amfani da wannan takarda a lokacin da ana kawo energy mai tsawon zuwa wurare da ke da damar voltage.


A nan za a nemi abin da bundled conductors suna da a cikin single conductor.

Mafiyan Mafiyan Bundled Conductors

1. Bundling of conductors tana haɗa da ci nasara da karkashin line inductance.
   Ana sanin cewa inductance na line tana cikin
   
   Inda, GMD = Geometric mean distance
   GMR = Geometric mean radius
   Don single conductor da radius r
   GMR = 0.7788r
   Don two conductor bundle kamar da ake nuna a figure
   
   

   
   

   Don three conductor bundle
   
   Don four conductor bundle
   
   Saboda haka, a lokacin da muka daɗe da number of conductors, GMR tana ɗauki, kuma L tana ɗace. A nan, akwai mafiyan mafiyan da ake da ita da ɗace da inductance na line, kamar-

   
   Inda X = wL …reactance of line

• Voltage regulation na line tana ɗauki saboda reactance na line tana ɗace.

• Maximum power transfer capability na line tana ɗauki saboda

• 
  

2. A nan da ake yi amsa da argument da ake yi a matsayin ɗace da inductance na line, za a iya cewa capacitance na line tana ɗauki, saboda capacitance na line to neutral tana cikin
   
   A nan saboda L tana ɗace da C tana ɗauki, net SIL na line tana ɗauki automatically, kuma power transfer capability tana ɗauki. Saboda haka, amfani da bundled conductors tana zama ƙarin hikima da ake amfani a kan SIL, i.e. Surge Impedance Loading.

3. Mafiyan Mafiyan bundled conductors tana zama kyau saboda ability da ke da take ɗace corona discharge. Idan ana kawo energy mai tsawon zuwa wurare da ke da damar voltage using a single conductor, voltage gradient around it tana ƙasar, kuma akwai ƙasar da corona effect tana faru - musamman a lokacin da yawan harsuna. Amma, amfani da several conductors nearby instead of one conductor, forming a bundled conductor tana ɗace da voltage gradient kuma tana ɗace da possibility of corona formation.
   Increase in critical corona voltage tana da shiga da cewa-

   
   

   An samu cewa spacing optimum between the conductors in a group tana da 8-10 times diameter of each conductor, irrespective of the number of conductors in the bundle.

• Number of conductors in the group,

• Clearance between them, and

• The distance between the groups forming separate phases.

4. Reduction in the formation of corona discharge tana ɗace da power loss kuma tana ɗauki transmission efficiency na line.

5. Reduction in communication line interference saboda ɗace da corona.

6. Ampacity, i.e. current carrying capacity of bundled conductors tana ɗauki compared to single large conductor saboda reduced skin effect.

7. As the bundled conductors tana da effective surface area exposed to air, tana da ƙarin cooling kuma tana da ƙarin performance compared to a single conductor.

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