NDLI: Pre-breakdown phenomena in new vegetable oil - based jatropha curcas seeds as substitute of mineral oil in high voltage equipment

Content Provider	IEEE Xplore Digital Library
Author	Sitorus, H.B.H. Beroual, A. Setiabudy, R. Bismo, S.
Copyright Year	1994
Abstract	Due to their high biodegradability, non-toxicity and higher fire safety guarantee, vegetable-based oils are considered today as a potential substitute for mineral and synthetic liquids for electrical insulation and especially in high voltage power transformers. However most of known vegetable oils are derived from food materials (rape-seeds, sunflower, soybeans, palms, corns and others). And one has to be vigilant to the fact that the replacement of mineral oil by natural ester fluids based on “renewably sourced” vegetable oils, does not create new problems as this could cause global food crisis due to diversion of food into insulating material oils or others (fuel). An interesting product can be jatropha curcas oil (JCO) extracted from the fruit seeds of jatropha curcas plants (“miracle tree”) which is non-food crops. These plants can be grown on marginal or degraded soils and thus enables to avoid the need to utilize those more fertile soils currently being used by smallholders to grow their staple crops; and they readily grow in areas where annual rainfall levels are significantly lower than those required by other species such as rape-seeds, sunflower, palm, soybeans, corns and others. This paper presents an experimental study of streamers phenomena in jatropha curcas methyl ester oil (JMEO) and mineral oil (MO) under positive and negative lightning impulse voltages (1.2/50 μs); JMEO is obtained by alkali base catalyzed trans-esterification process of JCO to reduce the viscosity and acidity. It is shown that basing on the streamer characteristics (shape, stopping length, velocity, current and electrical charge), JMEO could constitute a potential substitute for mineral for electrical insulation and especially in high voltage power transformers.
Sponsorship	National Natural Science Foundation of China (NSFC) Region Centre Ville de Tours Conseil General D'Indre et Loire ABB IEEE Sandia National Laboratories TOSHIBA
Starting Page	2442
Ending Page	2448
Page Count	7
File Size	1715326
File Format	PDF
ISSN	10709878
Volume Number	22
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Minerals Vegetable oils Electrodes Lightning Voltage measurement Shape Streaming media vegetable oil JMEO streamer final length velocity
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Streamer propagation in small gaps of synthetic ester and mineral oil under lightning impulse

Streamer characteristic and breakdown in synthetic and natural ester transformer liquids with pressboard interface under lightning impulse voltage

Influence of paper insulation on the prebreakdown phenomena in mineral oil under lightning impulse

Investigations on streamers phenomena in mineral, synthetic and natural ester oils under lightning impulse voltage

Streamer initiation in mineral oil. Part I: electrode surface effect under impulse voltage

Streamer initiation in mineral oil. Part II: influence of a metallic protrusion on a flat electrode

Streamer propagation and breakdown in natural ester at high voltage

Creeping discharge developing on vegetable-based oil / pressboard interface under AC voltage

Fractal analysis of lightning impulse surface discharges propagating over pressboard immersed in mineral and vegetable oils

Pre-breakdown phenomena in new vegetable oil - based jatropha curcas seeds as substitute of mineral oil in high voltage equipment

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