Performance of Natural Ester as a Transformer Oil in Moisture-Rich Environments

被引：35
作者：
Bandara, Kapila [1 ]
Ekanayake, Chandima [2 ]
Saha, Tapan [1 ]
Ma, Hui [1 ]
机构：
[1] Univ Queensland, Sch Informat Technol & Elect Engn, Brisbane, Qld 4072, Australia
[2] Griffith Univ, Sch Engn, Gold Coast, Qld 4222, Australia
来源：
ENERGIES | 2016年 / 9卷 / 04期
基金：
澳大利亚研究理事会;
关键词：
acidity; ageing; colour; dielectric dissipation factor (DDF); hydrolysis; natural ester (NE); mineral oil; oxidation; viscosity; CELLULOSE INSULATION; THERMAL-DEGRADATION; POWER TRANSFORMERS; FURANIC COMPOUNDS; PAPER; EQUILIBRIUM; PRODUCTS;
D O I：
10.3390/en9040258
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Interest has risen among utilities in using natural ester (NE) insulating oils in transformers as a substitute for conventional mineral oil. However, present understanding on aging behaviour of NE-paper composite insulation system and knowledge on application of existing condition monitoring tools for NE-based insulation are inadequate. This limits the cost effective and reliable field applications of NE insulating oil. To pave the way the application of NE-based insulation in transformers, a systematic study has been performed to compare the aging behaviour of transformer grade pressboard (PB) impregnated in NE and conventional mineral oil. Applicability of a number of chemical and physical parameters, including acidity value, dielectric dissipation factor (DDF), viscosity, and colour for assessing the quality of NE insulating oil is also discussed in this paper. Comparisons are made based on the limiting values provided in the related IEEE Standard and properties of mineral oil under similar aging conditions.
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页数：13
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