Characteristic Gas and Production Law of Natural Ester Insulating Oil under Electro-thermal Faults

2018 ◽  
Author(s):  
Haoxi Cong ◽  
Shiyue Du ◽  
Minhao Zhang ◽  
Qingmin Li ◽  
Jianben Liu
Keyword(s):  
Insulating Oil ◽  
Natural Ester

THz optical parameters of FR3 natural ester insulating oil after thermal aging

Optik ◽  
2021 ◽  
Vol 239 ◽  
pp. 166873
Author(s):  
Wang Liang ◽  
Qi Zhipeng ◽  
Li Ze ◽  
Guo Li
Keyword(s):  
Thermal Aging ◽  
Optical Parameters ◽  
Insulating Oil ◽  
Natural Ester

scholarly journals Effect of repeated electrical breakdowns on mineral and natural ester insulating oils

2021 ◽  
Vol 10 (6) ◽  
pp. 2989-2996
Author(s):  
Sharin Ab Ghani ◽  
Mohd Shahril Ahmad Khiar ◽  
Imran Sutan Chairul ◽  
Muhammad Imran Zamir
Keyword(s):  
Breakdown Voltage ◽  
Electrical Discharge ◽  
Electrical Breakdown ◽  
Standard Test ◽  
Test Method ◽  
Power Transformers ◽  
Insulating Oil ◽  
Different Types ◽  
Increasing Demand ◽  
Natural Ester

Transformer insulating oils are exposed to repeated electrical discharge or breakdowns inside power transformers. Durability tests are conducted to analyze the ability of oil to resist decomposition due to such high electrical stresses. With the increasing demand for alternative insulating oils for oil-immersed transformers, it is worthy to compare the performance of different types of insulating oils (conventional mineral-based insulating oil and natural ester-based insulating oil) under repeated electrical breakdown. In this paper, the AC breakdown voltage of different mineral-based and natural ester-based insulating oils is reported. Durability tests were conducted based on the AC breakdown voltage behavior of insulating oils after 50 electrical breakdown shots. The AC breakdown voltage of each insulating oil sample was assessed according to the ASTM D1816 standard test method. Based on the results, it can be concluded that the dissimilarity in chemical composition of the insulating oils has a significant effect on the AC breakdown voltage behavior of these oils under repeated electrical breakdowns.

Evolved Gas from Insulating Oil Heating under Oxygen Existence

2011 ◽  
Vol 131 (9) ◽  
pp. 764-770
Author(s):  
Kiwamu Miyajima ◽  
Takahiro Sawatsu
Keyword(s):  
Evolved Gas ◽  
Insulating Oil

Pressure Rises due to Arc under Insulating Oil in Closed Vessel

2016 ◽  
Vol 136 (2) ◽  
pp. 175-183 ◽  
Author(s):  
Tomo Tadokoro ◽  
Masashi Kotari ◽  
Toshiya Ohtaka ◽  
Mikimasa Iwata ◽  
Tadashi Amakawa
Keyword(s):  
Closed Vessel ◽  
Insulating Oil
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