Optimisation of insulator design for improved electric field performance
Insulators are the integral part of the power system. Among them polymeric insulators are essential for the better performance. Polymer insulators become popular due to various advantages offered such as light weight, ease of installation and lower cost. Despite numerous advantages offered, there...
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| 格式: | Thesis |
| 语言: | English English English |
| 出版: |
2015
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| 总结: | Insulators are the integral part of the power system. Among them polymeric insulators
are essential for the better performance. Polymer insulators become popular due to
various advantages offered such as light weight, ease of installation and lower cost.
Despite numerous advantages offered, there are also some problems regarding the
polymer insulators. One of the factors governing the electrical performance of polymeric
insulator is characterized by its field distribution along their length. This thesis has been
made to analyse insulator performance via their electric field distribution. By improving
the electric field distribution, it will help in enhancing their long term performance of
insulator. The COMSOL Multiphysics software has been employed to investigate the
electric field stresss along the insulator‟s surface. . An 11kV of polymeric insulator in
clean and dry condition is modelled for simulation. For electric field‟s optimisation
purpose, three different techniques are used to investigate its distribution along the
insulator‟s surface. The techniques employed are as follow: i) different configuration of
metal end fittings design, ii) improve of insulator weather shed shape and iii) installation
of corona ring at appropriate location. From the observation, all the techniques proposed
have significant effect on electric field distributions. Simulation of insulator model has
shown that the maximum value of electric field stress was found to be at the region of
metal end fittings. After the application of all optimization techniques, the electric field
stress performance of the proposed insulator is reduced by 83.97% to 9.643x104V/m
from 6.015x105V/m at the beginning. |
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