油浸式變壓器套管損耗因數模擬之研究

The Study on Dissipation Factor of Oil Impregnated Paper within the Power Transformer Bushing

張君帆(Chun-Fan Chang)

指導教授 ： 許世哲

中原大學/工學院/電機工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400886

摘要

油浸式套管(Oil Impregnated Bushing)是油浸式變壓器中不可或缺的一個元件，它是由絕緣的油浸式紙(Oil Impregnated Paper, OIP)、礦物油與瓷套所組成。本論文首先介紹套管的構造，繼而說明套管因受到外界影響而造成的損壞，也描述了用來量測套管損耗係數的方法。
本研究的主要內容為建構出油浸式變壓器套管的模型，及計算不同頻率下絕緣油和油浸式紙的相對介電常數，以模擬油浸式套管在不同情形下的損耗係數〖(tan〗⁡〖δ)〗與頻率(f)的關係。所進行的模擬包括了在不同溫度、濕度和雷擊後，損耗係數在不同頻率下的變化。
由於損耗係數可作為評估油浸式變壓器套管是否老化或損壞的指標，因此，本論文針對變壓器損耗係數的研究成果，對於了解損耗係數與其他外在環境（溫度、濕度及雷擊…等）的關係，並進而用於開發評估油浸式變壓器套管應否進行維護或更換的工具，提供了良好的基礎。

關鍵字

油浸式套管 ； 相對介電常數 ； 損耗係數

並列摘要

Oil-immersed bushing is an indispensable element in an oil-immersed transformer. It consists of oil-immersed paper, mineral oil and porcelain. This thesis describes the structure of the bushing, and shows the damages causing by external factors. It also provides the methods of measuring dissipation factor of oil-immersed bushing.
This study constructs a model of oil-immersed transformer bushing. The relative permittivity (

並列關鍵字

Relative permittivity ； Dissipation factor ； Oil-immersed transformer bushing

參考文獻

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Mineral Oil Impregnated Cellulose and the Impact of Aging," IEEE Transactions on Dielectrics and Electrical Insulation Vol. 14, No. 1; February 2007.

[5] D.J.Smith, S.G. McMeekin, B.G.Stewart and P.A.Wallace, ”The Modelling of Electric Field, Capacitance and Dissipation Factor of a High Voltage Bushing over, Varying Frequency,” Universities Power Engineering Conference (UPEC), 2012 47th International,London, Sept 2012.

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[20]O.L. Hestad, U. Gafvert, and L.E. Lundgaard, "Dielectric Response of Oil-impregnated Cellulose from 0.1 mHz to 3 MHz," IEEE International Conference on 26 June-1 July 2005, pp. 277-280.