-The objective of the research is to find (1) The characteristic of surface leakage current of the polymer insulator under the artificial multi stress, (2) Investigating the tropical climate factors which could influence of the surface leakage current of the polymer insulator, (3) The most influential climate factor towards the characteristics of the surface leakage current of the polymer insulator, (4) A comparison of the surface leakage current of the polymer insulator with a ceramic or a glass insulator if they were used in the area tropical climate. The methods used were making design concept of chamber construction and it accessories, designing it, so it could be well functioned and useful. The tests are carried in several stages and the result of the research reveals that the characteristic of the surface leakage current of polymer insulators SIR is much smaller and more stable than ceramic insulator and glass insulator. The test, by blowing the various artificial tropical climate pressure, indicates that the surface leakage current of the polymer insulator SIR is very small for all types of the tropical climate impacts and the smallest comparison occurs when it is blown by the pollution of salty fog in which the average comparison achieves 1: 3.14 : 4.26 towards ceramic and glass insulator. The difference of the lowest leakage current reaches the average of 72.03 % towards the ceramic insulator and 58.21% towards the glass insulator.
The prediction of converted energy by one way gears wave energy converter may be influenced by non-linearity properties of the ocean waves. To date there has not been an adequate analytical model to predict the power production of one way gear wave energy converter under irregular wave condition. In this work, analytical model is developed to describe the interaction of one way gear wave energy converter that utilized gravity force of the gravityweight (M) with irregular ocean waves using JONSWAP (Joint North Sea Wave Project) model. This interaction model has been simulated numerically by means of computer software. The simulation result showed that wave height is strongly determining the converted output power. The outcome of harnessing the gravity force instead of buoyant force of this proposed model that commonly used by the previous wave energy converter demonstrate significant potential output power. The proposed model can be used to design feasible and efficient wave energy converter.
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