scholarly journals Study on Breakdown Voltage for Vegetable Oils With Additive TiO2

2018 ◽  
Vol 12 (1) ◽  
pp. 175 ◽  
Author(s):  
Muhammad Bin Yahya ◽  
Raja Muhammad Khidir Raja Chik
Keyword(s):  
Breakdown Voltage ◽  
Vegetable Oils ◽  
High Voltage ◽  
Coconut Oil ◽  
Mineral Oil ◽  
Transformer Oil ◽  
Experimental Result ◽  
Distribution Transformers ◽  
Sample Data ◽  
Before And After

High voltage power transformers commonly used petroleum-based mineral oil for cooling and insulation purposes. Researchers are looking for suitable vegetable oils as alternatives to mineral oil to be used as transformer oil. The alternative vegetable oils are biodegradable, non-toxic and environmentally friendly. They may require some processing and modification to improve some of their properties to ascertain their safe use in power and distribution transformers as well as in high voltage equipment. This paper presents a study on the AC breakdown voltages of Palm Oil (PO) and Coconut Oil (CO) with presence of an additive. PO and CO are chosen as they are locally produced oils in Malaysia and easily obtained. The type of additive used in this study is Titanium dioxide TiO<sub>2</sub>. TiO<sub>2</sub> nanoparticles was added into PO and CO at volume concentration of 0.1% to 0.5%. The effect of different gap distance of electrode 1.5mm, 2.5mm and 3.5mm was studied. The temperature of oil is controlled at 30<sup>o</sup>C. This paper provides a comparative assessment of breakdown properties through experimental investigation of PO and CO before and after the additive is added according to ASTM D1816 standard. From the experimental result, the PO have slightly higher breakdown voltage compared to CO. From all oil sample data recorded, it can be concluded that the breakdown voltage had increased to the increase in gap distance of electrode under presence of TiO<sub>2</sub>.

scholarly journals Study of Breakdown Voltage of Vegetables oil with SiO2 Nanoparticle Additive

2018 ◽  
Vol 12 (1) ◽  
pp. 296
Author(s):  
Muhammad Bin Yahya ◽  
Fatin Amirah Binti Amirrazli
Keyword(s):  
Breakdown Voltage ◽  
Palm Oil ◽  
Coconut Oil ◽  
Mineral Oil ◽  
Partial Discharges ◽  
Transformer Oil ◽  
Different Temperatures ◽  
The Mean ◽  
Insulating Liquid ◽  
Positive Results

<p>This paper investigates the suitability of vegetable oils to replace mineral oil based on its AC breakdown voltage, partial discharge and viscosity. The purpose of the study is to analyze the effect of the nanofluids containing SiO<sub>2</sub> nanoparticle in vegetables oils; namely, Coconut oil and Palm oil. A nanofluid is a fluid containing nanoparticles. However, the precise effects on the electrical properties is still uncertain. For decades, transformers use petroleum-based mineral oil because of its good dielectric properties and cooling capability. Coconut oil (CO) and Palm oil (PO) are thought to be   suitable alternatives to replace mineral oil as transformer oil as they are sustainable and available in plenty as natural resources.  It was obtained in this study that the breakdown voltages of these raw oils have fulfilled the standard specifications of good insulating liquid. However, the addition of SiO<sub>2</sub> did not improve the AC breakdown voltage and viscosity of coconut oil and palm oil at different temperatures. However, the addition of SiO<sub>2</sub> gave positive results in the values of partial discharges in which the presence of the nanoparticles has greatly reduced the mean volume of partial discharges for both coconut oil and palm oil.</p>

scholarly journals Experimental Investigation of Insulating Properties of Vegetable Oil under High Voltage

2019 ◽  
Vol 4 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Sanjida Islam ◽  
Md. Selim Hossain ◽  
Md. Farhamdur Reza ◽  
Md. Mamunur Rashid
Keyword(s):  
Experimental Investigation ◽  
Breakdown Voltage ◽  
Palm Oil ◽  
High Voltage ◽  
Coconut Oil ◽  
Cost Effective ◽  
Transformer Oil ◽  
Insulating Oil ◽  
High Breakdown Voltage ◽  
Mixed Oil

Due to concerns over the world’s energy necessity and environmental impact of mineral oil, these conditions induce many researchers to search for substitute sources for insulating oil. Alternatives insulating oil with biodegradable characteristics, environment friendly and presented in different countries including Bangladesh such as vegetable oils have been proposed for high voltage applications. In this paper, a relative measurement of breakdown voltage through experimental investigation of coconut, mustard, soybean, and palm oil and their blend (which is available in Bangladesh and cost effective) is presented. Break down voltage was measure with different electrode configuration by changing gap distance. The results show that the blend of (50% coconut oil + 50% palm oil) got high breakdown voltage in mushroom-mushroom electrode, and other side in plane-plane type pure soybean oil got high breakdown voltage, compared with transformer oil. The presented result illustrate that the proposed mixed oil provides better performance than the rise husk oil.

scholarly journals EQUIPMENT DESIGN AND TESTING TRANSFER VOLTAGE REFERRING TO IEC 156 STANDARD USING VIRGIN COCONUT OIL (VCO) WITH OIL TEMPERATURE CONDITIONING

2021 ◽  
Vol 2 (2) ◽  
pp. 001-006
Author(s):  
Ansyori Ansyori ◽  
Irsyadi Yani ◽  
Eric Rahman
Keyword(s):  
Breakdown Voltage ◽  
Short Circuit ◽  
Coconut Oil ◽  
Electrical Equipment ◽  
Transformer Oil ◽  
Virgin Coconut Oil ◽  
Electrical Failure ◽  
Environmentally Safe ◽  
Insulating Liquid ◽  
Design And Testing

Isolation is a separator between conductors in electrical equipment that prevents flashover, resulting in a short circuit or electrical failure. Isolation is critical in electrical appliances, exceptionally High Voltage Power Equipment (HVPE), to ensure the safety of circuit breakers, capacitors, and transformers. In addition to being an isolator, the insulating liquid material also serves to cool the heat generated by electrical appliances. Isolator with mineral oil-based transformer has various environmental issues, including non-biodegradability, non-renewability, and rarity. Because it is environmentally safe and extensively used, virgin coconut oil (VCO) is an alternative transformer oil insulation. This study aims to determine the properties of Virgin Coconut Oil (VCO) breakdown voltage using the IEC 156 standard and oil temperature conditioning. According to the test results, the oil breakdown voltage before heating (at room temperature) is 14 kV, which is much below the IEC 156 standard, and the breakdown voltage after heating at 90 ° is 35 kV, and 110 ° is 40 kV, which is even higher than the IEC 156 requirement

scholarly journals A STUDY ON BREAKDOWN PROPERTIES OF COCONUT OIL

2019 ◽  
Vol 57 (3) ◽  
pp. 320
Author(s):  
Nguyen Van Dung ◽  
Nguyen Hoai Trung
Keyword(s):  
Breakdown Voltage ◽  
Coconut Oil ◽  
Mineral Oil ◽  
Electric Breakdown ◽  
Experimental Results

This paper presents the results of electric breakdown properties of coconut oil with AC voltage. Experimental results show that breakdown voltage of new coconut oil is comparable to that of mineral oil. Ageing was seen to significantly affect the breakdown voltage of both coconut oil and mineral oil. However, influence extent of ageing on the breakdown voltage was higher for mineral oil. The antioxidant was seen to reduce the breakdown voltage of new coconut oil, but raised the breakdown voltage of aged coconut oil. The V-t characteristic of coconut oil is not as good as that of mineral oil.

scholarly journals Influence of Aging Derivatives on Properties of Natural Ester Oil

2020 ◽  
Vol 9 (4) ◽  
pp. 2597-2600 ◽  
Keyword(s):  
Mineral Oil ◽  
Transformer Oil ◽  
Critical Parameters ◽  
Uv Spectrum ◽  
Service Period ◽  
Before And After ◽  
Furanic Compounds ◽  
Paper Insulation ◽  
Transmission And Distribution ◽  
Natural Ester

Transformers are the critical component in the power system, which is used for transmission and distribution purposes. Traditionally mineral oil has been used as the liquid insulation medium in the transformer. Owing to poor bio - degradability and availability, it has been widely studied to replace mineral oil with natural ester oil. During the service period of the transformer, oil insulation and paper insulation gets degraded due to aging. This aging results in the formation of furanic compounds in the oil insulation, which will affect the performance of oil insulation and thus the transformer life. In this proposed work, an effort is made to analyze the critical parameters before and after the inclusion of an aging derivative of 2–furfuraldehyde (2-FAL). 2-FAL has been added in the proportion of 20 ppm to investigate the oil’s properties such as breakdown voltage, viscosity, flash point, fire point, and peak absorbance of the UV spectrum. It is observed that there is a lesser impact on the properties with the addition of 20ppm of 2-FAL. Hence it is suggested that the various concentration of 2-FAL may be added to check the quality of oil for further applications.

scholarly journals Behavior of Biodegradable Oil under Impulse Voltages

2015 ◽  
Vol 785 ◽  
pp. 320-324 ◽  
Author(s):  
Nurul Izzatul Akma Katim ◽  
Mohd Taufiq Ishak ◽  
A.M. Ishak ◽  
M.Z.A.A. Kadir
Keyword(s):  
Breakdown Voltage ◽  
Palm Oil ◽  
Coconut Oil ◽  
Mineral Oil ◽  
Electrical Performance ◽  
Uniform Field ◽  
Testing Methods ◽  
Environmental Compatibility ◽  
Impulse Voltage ◽  
Lightning Impulse

The properties of Palm Oil (PO) and Coconut Oil (CO) offer the potential for transformers with non-toxicity, high fire and flash points and better environmental compatibility while compared with those filled with Mineral Oil (MO). This potential has led to intensive studies of electrical performance of biodegradable oil especially in evaluating the electrical performance under lightning impulse voltage in recent years. This paper presents the investigation on the impulse breakdown voltage of PO and CO in such a uniform field. The PO used in this study is Refined, Bleached and Deodorized Palm Oil (RBDPO) Olein type. Two testing methods, rising-voltage and up-and-down are considered for both oils with different gap distances (2.0 mm and 3.8 mm). Testing methods including rising-voltage method and up-and-down method have no notable influence on the breakdown voltages of RBDPOs and CO compared to MO.

Experimental Study of the Characteristics of Transformer Oil and Some Selected Vegetable Oils

2016 ◽  
Vol 23 ◽  
pp. 13-23 ◽  
Author(s):  
Omokhafe James Tola ◽  
Adamu Murtala Zungeru ◽  
F.O. Usifo ◽  
Ambafi James Garba
Keyword(s):  
Vegetable Oils ◽  
Seed Oil ◽  
Energy Requirement ◽  
Palm Kernel ◽  
Mineral Oil ◽  
Standard Test ◽  
Transformer Oil ◽  
Rubber Seed Oil ◽  
Oil Resources ◽  
Petroleum Oil

The world’s energy requirement has been dominated by petroleum oil resources for years in many applications, especially in the area of electricity generation and utilization. Mineral oil application in power system equipment can be potentially hazardous to the environment, especially when there are incidents of transformer explosion, which caused spillages of oil to the soils or water streams and thereby pollute the surrounding environments. This paper is aimed at finding a substitute for the use of mineral oil as transformer oil. Experiments on breakdown voltages, flash points, pour points, viscosities, densities and insulation resistances on conventional mineral oil and some selected vegetable oils were conducted, analyzed and compared to the internationally accepted standards, ASTM (America Standard Test of Material). Rubber seed oil, Palm oil, Mellon oil, Ground oil and Palm kernel oil were found to have good electrical, chemical and thermal properties which the transformer oil has.

Characteristics of Mineral Oil-based Nanofluids for Power Transformer Application

2017 ◽  
Vol 7 (3) ◽  
pp. 1530 ◽  
Author(s):  
I. H. Zakaria ◽  
M. H. Ahmad ◽  
Y. Z. Arief ◽  
N. A. Awang ◽  
N .A. Ahmad
Keyword(s):  
Electrical Properties ◽  
Breakdown Strength ◽  
Power Transformer ◽  
Atmospheric Pressure Plasma ◽  
Mineral Oil ◽  
Transformer Oil ◽  
Before And After ◽  
Cold Atmospheric Pressure Plasma ◽  
The Stability ◽  
Physical Changes

Trends in the field of nanomaterial-based transformer oil show most of the conducted works have focused only on the transformer oil-based nanofluids but limited studies on the stability of transformer oil-based nanofluids. Since mineral oil-based nanofluids still can produce the sedimentation, thus the cold-atmospheric pressure plasma method is proposed to functionally modify the Silicon Dioxide (SiO<sub>2</sub>) nanofiller in order to enhance the electrical properties of the mineral oil-based nanofluids. The AC breakdown strength oil samples before and after modification were measured. It was found that the plasma treated nanofluids have higher AC breakdown voltage compared to pure oil and untreated nanofluids. Also, Fourier Transform Infrared (FTIR) Spectroscopy has been used in this study to analyse the physical changes of oil samples. It is envisaged that the added silica nanofiller has significant effect on electrical properties of the transformer oil-based nanofluids which would enable to the development of an improved class of liquid dielectric for the application of power transformer.

scholarly journals A Review on Properties, Opportunities, and Challenges of Transformer Oil-Based Nanofluids

2016 ◽  
Vol 2016 ◽  
pp. 1-23 ◽  
Author(s):  
Muhammad Rafiq ◽  
Yuzhen Lv ◽  
Chengrong Li
Keyword(s):  
High Voltage ◽  
Mineral Oil ◽  
Dielectric Medium ◽  
Transformer Oil ◽  
Market Place ◽  
High Voltage Direct Current ◽  
Material Development ◽  
Transformer Oils ◽  
Insulating Liquid ◽  
Economic Considerations

The mineral oil or synthetic oil in conjunction with paper is mainly being applied as dielectric medium in many of the high voltage apparatus. However, the advent of high voltage levels such high voltage alternating current (HVAC) and high voltage direct current (HVDC) has prompted researchers to direct their focus onto an insulation system which can bear the rising high voltage levels. The modern insulating liquid material development is guided by various factors such as high electrical insulation requirements and other safety and economic considerations. Therefore transformer manufacturer companies have to design transformers with these new specific requirements. The transformer oil-based nanofluids with improved dielectric and thermal properties have the potential to replace mineral oil base products in the market place. They are favorable because they function more superior than mineral oil and they contribute definite insulating and thermal gains. This paper reviews recent status of nanofluids use as transformer oils. The nanofluids used as transformer oils are presented and their advantages are described in comparison with mineral oil. The multiple experimental works carried out by different researchers are described, providing an overview of the current research conducted on nanofluids. In addition scope and challenges being confronted in this area of research are clearly presented.

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