油浸式變壓器油中氣體分析診斷與油活化再生處理研究

The Study of Dissolved Gas Analysis and Oil Activation Recycling Treatment in the Oil-immersed Transformer

王福春(Fu-Chun Wang)

指導教授 ： 黃清池

崑山科技大學/工程學院/電機工程研究所/碩士(2009年)

摘要

隨著經濟發展和國計民生對供電之要求愈來愈高，使得電力由發電廠產生之高電壓輸送至變電所，再經由變壓器轉換為工業、商業及家庭用戶之用電愈來愈重要。油浸式變壓器可說是為整個供電系統的心臟，它對電能傳輸、靈活分配和安全使用具有重要的意義。變壓器絕緣油為保障電力供應的重要環節，為了提高變壓器之運轉可靠度及降低維護費用，若能採用各種不同的監測及分析方法，提早偵測、檢驗出變壓器內部之潛在故障訊息，俾便進行檢修將可避免事故擴大。利用變壓器油中溶解氣體分析方法，可以在不停電的情況下，對變壓器取油樣，進而對油樣中所溶解的氣體進行分析，還可根據其分析結果來判斷變壓器的運轉狀態與故障類型，由於靈敏度高，對設備乃至電力系統之安全運轉有著積極有效的作用。
利用油中可燃性特徵氣體的成分和含量比值之油中氣體分析法，來判斷變壓器之故障類型。若故障型式為絕緣油劣化，而不是變壓器本體及電氣所引起的話，則可以絕緣油活化再生處理技術再做進一步處理。本文以成功大學兩台主變壓器驗證所採用之方法後，發現其效果良好，可有效提升變壓器之安全運轉及供電穩定度。

關鍵字

油中溶解氣體分析(DGA)

並列摘要

According to the more and more high expectations of the power supply dependability followed by economic development and livelihood, makes the electricity to be more and more important from power plants to substations, and then from transformers to the customers of industry, commerce and family. The oil-immersed transformer can be regard as the heart of the power supply system. It has very important meanings for energy transmission, flexible distribution and safe manipulation. If it is out of order, it will create a serious effect. However, transformer insulating oil is one of the essential links for power supply protection. To certify the reliable operation of the transformer and decline the maintainable fee, there are several different monitoring and analytic methods that can examine the potential disordered information ahead to prevent from extending the accident. The dissolved gas analysis (DGA) can extract the oil sample on-line, and then separate and analyze the dissolved gas to determine the operation conditions and disorder styles of transformers. And it owns the positive action for protective equipment and safe operation of power system due to its high sensitivity and effectiveness.
This thesis is studied the dissolved gas analysis by using flammable gas elements, amounts, and ratios to determine the disorder types in oil-immersed transformers. If the disorder type does not occur from the transformer itself and the electric characteristics but occur from the inferior quality of the insulating oil, it can be improved by the oil activation recycling treatment to treat the transformer insulating oil. After the oil activation recycling treatment used to these two main transformers of the National Cheng Kung University, its results solidify the feasibility and effectiveness of the proposed method.

並列關鍵字

Dissolved Gas Analysis

參考文獻

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