Post on 11-Apr-2017
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Capacitance of
Transmission Lines
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• Prepared By:– ROHIT RAHUL K.– SHAH SHITAL K– SHAIKH MAHAMMADPARVEZ I.– SIDDIQUI ARSHAD HUSSAIN A.– SOLANKI LALITBHAI C.– SOLANKI RAVINDRASINH N. – TRIVEDI BHARGAV H.– VISANI RADHIKA C. – DILIP DAS – PARGI NIMESH – PRAJAPATI NIMESH
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GOVERNMENT ENGINEERING COLLAGE
DAHOD
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Contents
• Introduction • Coulomb's law• Capacitance of a three phase line• Effect of earth on transmission line capacitance• Method of GMD• Bundled conductors,• Electrostatic induction
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Introduction Transmission Line Capacitance.
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• The capacitance of a transmission line is the result of the potential differences between the conductors themselves as well as potential differences between the conductors and ground.
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Coulomb's law
Coulomb's law: Like charge repel and unlike charge attracted each other.
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Electric field
Electric field: Region around the electric charge in which another charge experiences a force of attraction or repletion
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Potential different Difference Between Two Points.
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Capacitance of single phase two wire line.
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Capacitance of three phase line with Unsymmetrical Spacing.
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Effect of earth on transmission line
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Bundle conductor
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Many types of bundle conductor
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Advantages of bundle conductor
•Current capacity increased•Reduced corona losses•Improving skin effect•Reduced line inductance(improve p.f.)•Reduced Line heating•Reduced voltage drop of transmission line
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Electrostatic induction
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Reference• Electric circuit (by: R.P. Ajwalia),Pub: Atul
Prakashan• http://www.electrical4u.com/electrical-power-tran
smission-system-and-network/• http://www.skm-eleksys.com/2011/03/transmissio
n-line-parameters.html• https://en.wikipedia.org• follow me:
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Conclusion.After studying about the topic of transmission line capacitance, law’s of coulomb, bundle conductor, electrostatic induction. we conclude about the phenomena function and concept of the transmission line capacitance, Capacitance of a three phase line Effect of earth on transmission line capacitance Method of GMD Bundled conductors, Electrostatic induction ect,