In a 33 kV overhead line, there are 3 units in the string of insulators. If the capacitance between each insulator to pin and earth is 9% of self-capacitance of each insulator. Find distribution of voltage over three insulators and string efficiency.

In a 33 kV overhead line, there are 3 units in the string of insulators. If the capacitance between each insulator to pin and earth is 9% of self-capacitance of each insulator. Find distribution of voltage over three insulators and string efficiency.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter25: Surge, Spike, And Lightning Protection

Section: Chapter Questions

Problem 10RQ: In reference to the load, how are capacitors connected to help prevent voltage spikes and surges?...

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Concept explainers

Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.

Question

In a 33 kV overhead line, there are 3 units in the string of insulators. If the capacitance between each
insulator to pin and earth is 9% of self-capacitance of each insulator. Find distribution of voltage over three
insulators and string efficiency.

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