Abstract
The performance of insulating oil has a decisive significance for the single-limit capacity and operation reliability of the transformer. Compared with traditional mineral insulating oil, ester-based insulating oil belongs to low carbon/zero carbon emissions. The existing operating data of ester-based insulating oil transformers also shows that the transformer is stable and eco-friendly with almost zero carbon emissions. In this paper, a testing platform for electricity of oil flow was set up, and the effects of aging degree of oil paper and test velocity on electricity of oil flow of ester insulating oil were analyzed by selecting two kinds of commercial ester insulating oil and mineral insulating oil. The results show that the viscosity of the ester insulating oil is higher, and the friction contact between the oil paper is further increased under the action of oil flow, which accelerates the charge separation at the interface of the oil paper, resulting in the electricity of the oil paper is significantly higher than that of the mineral insulating oil, in which the natural ester is the highest, followed by the synthetic ester. With the increase of oil flow velocity, the charge separation at the interface of oil paper is intensified, and the charging tendency of ester insulating oil is enhanced. The increase in the aging degree of the oil paper accelerates the generation of aging polar products in the oil and then accelerates the dissociation of impure molecules; resulting in the increase of the number of intrinsic ions and impurity ions in the oil, and thus aggravating the electrification degree of the oil flow.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Moreau E, Paillat T, Touchard G (1999) Oil electrification measured on a pressboard coming from a damaged power transformer[C]. In: Annual report conference on electrical insulation and dielectric phenomena, Austin, TX. pp 794–797
Touchard G, Mas P, Paillat T, Moreau O (1999) Static electrification in power transformers: correlation between charge generation and ECT-tanδ parameters for different oil-pressboard couples[C]. In: Proceedings of the IEEE 13th international conference on dielectric liquids, Nara. pp 396–399
Tsukao S, Eto A, Kobayashi T et al (2007) Increase of static electrification in aged transformers[C]. IEEE power engineering society general meeting, Tampa, FL, pp 1–5
Vihacencu MS, Notingher PV, Paillat T, Jarny S (2014) Flow electrification phenomenon for newtonian and non-newtonian liquids: influence of liquid conductivity, viscosity and shear stress[J]. IEEE Trans Dielectr Electr Insulat 21(2):693–703
Washabaugh AP, Zahn M, Melcher JR (1991) Enhanced electrification charge densities due to recirculatory flow[C]. In: Proceedings of the 3rd International conference on properties and applications of dielectric materials, Tokyo, Japan. pp 272–275
Clermont P, Paillat T, Peres G, Duval Y (2014) Effect of an upstream charge onflow electrification mechanisms of dielectric liquids[C]. In: IEEE 18th International conference on dielectric liquids, Bled. pp 1–4
Murthy TSR, Agashe PG, Kamath KM (1996) Static electrification-chemical methods to suppress the charging behaviour in transformer oils[C]. In: Seventh international conference on dielectric materials, measurements and applications, Bath, UK. pp 374–377
Lin M, Qian Y, Li Z, Zhang L, Fu Q, Peng L (2023) Study on chemical diagnosis and processing technology for declination of transformer oil insulation performance[J].Guangdong Electr Power 36(7):70–76
Aksamit P, Zmarzly D, Boczar T (2011) Electrostatic properties of aged fullerene-doped mineral oil. Dielectrics and electrical insulation[J]. IEEE Trans 18(5):1459–1462
Ishikawa T, Yasuda K, Okabe S (2008) Streaming electrification characteristics of silicone oil with oil temperature increase. dielectric liquids[C]. In: IEEE international conference on dielectric liquids, Chasseneuil, France. pp 1–4
Acknowledgements
This research was funded by China Southern Power Grid Co., Ltd. Science and Technology Project Fund (No. GDKJXM20210086).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Wang, Q., Gao, M., Qian, Y., Zhuo, R., Zhao, Y. (2024). Study on the Influence of Aging Degree and Test Flow Velocity on Electrification of Ester Insulating Oil. In: Li, J. (eds) Proceedings of the 4th International Conference on Power and Electrical Engineering. ICPEE 2023. Lecture Notes in Electrical Engineering, vol 1149. Springer, Singapore. https://doi.org/10.1007/978-981-97-1674-6_9
Download citation
DOI: https://doi.org/10.1007/978-981-97-1674-6_9
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-97-1673-9
Online ISBN: 978-981-97-1674-6
eBook Packages: EnergyEnergy (R0)