Dissolved gas analysis (DGA) and fourier transform infra red (FTIR) spectroscopy of thermal-aged natural ester-paper composite

Suwarno, &; Munajad, Abi; Subroto, Cahyo

doi:10.1109/upec.2017.8231890

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Dalam perkembangannya, minyak ester sudah digunakan pada isolasi trafo terutama untuk trafo distribusi yang mulai tersedia secara komersial pada akhir 1990-an [1] Minyak ester dijadikan objek penelitian karena memiliki beberapa keunggulan diantaranya adalah tersedianya bahan baku dan lebih ramah lingkungan [2] Penelitian sejenis yang dilakukan Marbun [3] menggunakan pengujian karakteristik dielektrik minyak ester yang berubah setelah dilakukan pemanasan, tetapi tidak menjelaskan secara detail mengenai proses perubahan gugus fungsi minyak ester tersebut. Penelitian minyak ester lainnya oleh Cahyo [4][5] [6] [7] menunjukkan bahwa terjadi perubahan gugus fungsi C-H dan C=O pada minyak ester ketika mengalami pemanasan.…”

Section: Pendahuluanunclassified

Analisa Spektroskopi Inframerah Transformasi Fourier dan Gas Terlarut Terhadap Perubahan Gugus Fungsi Komposisi Minyak Ester

Rahmat¹,

Suwarno²

2020

infotekmesin

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Penelitian ini bertujuan untuk mengetahui perubahan gugus fungsi pada minyak ester sebagai akibat dari proses penuaan minyak ester-isolasi komposit kertas Kraft. Untuk menduplikasi kondisi aktual pada transformator, sampel 800 ml minyak biodiesel dan 6 gram kertas isolasi Kraft dimasukkan bersama-sama dalam botol tahan panas. Sampel dikondisikan dengan inisial kondisi yang samamelalui pemanasan pada suhu 100 °C selama 24 jam. Setelah pengkondisian awal, kemudian semua sampel mengalami kondisi penuaan termal dipercepat mulai dari 336 jam hingga 672 jam pada temperatur 120 0 C dan 150 0 C untuk kondisi aktual di transformator. Tes FTIR dan tes DGA dilakukan pada setiap periode penuaan. Proses penuaan termal menunjukkan adanya perubahan gugus fungsi dalam minyak ester dan menghasilkan beberapa komposisi gas mudah terbakar yang dominan seperti karbon monoksida (CO) dan etana (C2H6). Gas-gas mudah terbakar tersebut muncul akibat dekomposisi isolasi sehingga membuat gugus fungsi C = C pada spektrum tertentu untuk membentuk gas etana sehingga menurunkan ikatan ikatan isolasi kertas

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Section: Pendahuluanunclassified

Analisa Spektroskopi Inframerah Transformasi Fourier dan Gas Terlarut Terhadap Perubahan Gugus Fungsi Komposisi Minyak Ester

Rahmat¹,

Suwarno²

2020

infotekmesin

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“…In the world literature, there are over a dozen articles on comparative studies of gases generated in various insulating liquids due to overheating. Some of these studies concern overheating of insulating liquids and cellulose [9], [14], [15], while the authors of other studies focus on the analysis of gases generated exclusively in liquids. In this second case the following research approaches can be distinguished: 1) Heating the entire oil volume -overheating ≤ 200 • C mainly related to the generation of the so-called stray gases (H 2 , CH 4 , and C 2 H 6 ) [13], [16]- [18].…”

Section: State Of the Artmentioning

confidence: 99%

Analysis of Gas Generated in Mineral Oil, Synthetic Ester, and Natural Ester as a Consequence of Thermal Faults

Przybyłek

Gielniak

2019

IEEE Access

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The gases generated by electrical and thermal faults are similar in the case of mineral oil, synthetic ester, and natural ester. However, there are considerable differences in the amount of the generated gases and their solubility in these liquids, what should be taken into account during power transformer diagnostics by means of dissolved gas analysis (DGA) method. The aim of the research was to compare the gases generated as a result of thermal faults (250 • C, 350 • C, and 450 • C) in mineral oil and both esters. The following gases were analyzed: hydrogen, methane, ethane, ethylene, acetylene, propane, propylene, carbon oxide, and carbon dioxide. A qualitative and quantitative analysis of these gases was carried out by means of gas chromatography. A large share of propane in the sum of the gases generated in the esters, mainly in the synthetic ester, was found. Propane and propylene in most of the gas interpretation approaches are omitted. The authors proved that in the case of synthetic ester, using propane as the key gas for thermal faults detection is justified. The obtained results can be used to improve the interpretation of the DGA results, in the case of ester liquids used in power transformers. INDEX TERMS Dielectric liquids, fault diagnosis, dissolved gas analysis, power transformers.

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Updated experiences of DGA with natural esters and current state of international guides

Meira

Álvarez

Verucchi

et al. 2020

2020 IEEE 3rd International Conference on Dielectrics (ICD)

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Dissolved gas analysis (DGA) and fourier transform infra red (FTIR) spectroscopy of thermal-aged natural ester-paper composite

Cited by 3 publications

References 4 publications

Analisa Spektroskopi Inframerah Transformasi Fourier dan Gas Terlarut Terhadap Perubahan Gugus Fungsi Komposisi Minyak Ester

Analisa Spektroskopi Inframerah Transformasi Fourier dan Gas Terlarut Terhadap Perubahan Gugus Fungsi Komposisi Minyak Ester

Analysis of Gas Generated in Mineral Oil, Synthetic Ester, and Natural Ester as a Consequence of Thermal Faults

Updated experiences of DGA with natural esters and current state of international guides

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