Dissolved Gas Analysis of Liquid Insulation under AC and Impulse Breakdown Voltage Tests

2019 ◽  
Author(s):  
Norasage Pattanadech ◽  
Kanchanaporn Lukin ◽  
Chantapapa Samerpak ◽  
Nattakrit Chumninuan ◽  
Nadpakul Piyapatamin ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Gas Analysis ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis

Dissolved Gas Analysis of Palm Oil Compared with Mineral Oil from Different Types of Breakdown Voltage

2020 ◽  
Author(s):  
Suthat Suksagoolpanya ◽  
Korraya Jongvilaikasem ◽  
Kitipod Jariyanurat ◽  
Thanpilin Banthoengjai ◽  
Siwakorn Jeenmuang ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Palm Oil ◽  
Mineral Oil ◽  
Gas Analysis ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis ◽  
Different Types

Analisis Kualitas Isolasi Minyak Transformator 375 MVA dengan Interpretasi Rasio Roger, Segitiga Duval, Breakdown Test, dan Water Content Test

Teknik ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 63
Author(s):  
Abdul Syakur ◽  
Wildan Lazuardi
Keyword(s):  
Water Content ◽  
Breakdown Voltage ◽  
Gas Analysis ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis

Transformator merupakan peralatan utama dalam pemasokan listrik dari unit pembangkitan menuju konsumen. Oleh karena itu, perlu perhatian khusus dalam pemeliharaan kinerja transformator agar tidak terjadi kerusakan pada transformator. Selama trasformator beroperasi maka minyak transformator akan mengalami pembebanan berupa beban elektris dan termal yang dapat menyebabkan timbulnya gas-gas hidrokarbon terlarut pada minyak yang berpotensi menyebabkan gagalnya minyak sebagai fungsi isolasi yang baik. Karenanya diperlukan pemantauan khusus terhadap gas-gas tersebut. Salah satu cara untuk menganalisis gas terlarut dalam minyak adalah dengan menggunakan metode Dissolved Gas Analysis (DGA). DGA akan mengekstraksi gas tersebut untuk diketahui indikasi gangguan berdasarkan hasil interpretasi data gas-gas hidrokarbon terlarut yang dilakukan. Metode ini juga mampu memprediksi kerusakan jangka panjang, sehingga kerusakan pada transformator dapat dicegah. Hasil analisis DGA pada transformator menghasilkan indikasi berupa Discharge of thermal fault yang didapat dari hasil intrepetasi data menggunakan metode Rasio Roger dan Segitiga Duval. Selain itu, hasil pengujian breakdown voltage menunjukkan kondisi minyak yang masih baik yaitu kekuatan dielektrik > 50 kv dan pengukuran water content juga masih baik yaitu sebesar < 25 ppm.

Condition evaluation of power transformers using dissolved gas analysis and dielectric breakdown voltage test

2017 ◽  
Author(s):  
Suphon Kumpalavalee ◽  
Thanapong Suwanasri ◽  
Cattareeya Suwanasri ◽  
Sarawut Wattanawongpitak ◽  
Taratorn Sooksodkiao ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Dielectric Breakdown ◽  
Gas Analysis ◽  
Power Transformers ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis ◽  
Condition Evaluation

The Analysis on Temperature Raise of EHV Transformer Winding Based on the oil dissolved gas analysis Technology

2017 ◽  
Vol 1 (1) ◽  
pp. 54-60
Author(s):  
Xue Peng ◽  
◽  
Wei Wei ◽  
Wang Ying ◽  
Lu Xiuhe ◽  
...  
Keyword(s):  
Gas Analysis ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis ◽  
Transformer Winding

scholarly journals Towards Precise Interpretation of Oil Transformers via Novel Combined Techniques Based on DGA and Partial Discharge Sensors

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2223 ◽  
Author(s):  
Sayed A. Ward ◽  
Adel El-Faraskoury ◽  
Mohamed Badawi ◽  
Shimaa A. Ibrahim ◽  
Karar Mahmoud ◽  
...  
Keyword(s):  
Power Transformer ◽  
Partial Discharge ◽  
Electrical Power ◽  
Diagnostic Techniques ◽  
Gas Analysis ◽  
Economic Losses ◽  
Dissolved Gas ◽  
Electricity Transmission ◽  
Dissolved Gas Analysis ◽  
Precise Interpretation

Power transformers are considered important and expensive items in electrical power networks. In this regard, the early discovery of potential faults in transformers considering datasets collected from diverse sensors can guarantee the continuous operation of electrical systems. Indeed, the discontinuity of these transformers is expensive and can lead to excessive economic losses for the power utilities. Dissolved gas analysis (DGA), as well as partial discharge (PD) tests considering different intelligent sensors for the measurement process, are used as diagnostic techniques for detecting the oil insulation level. This paper includes two parts; the first part is about the integration among the diagnosis results of recognized dissolved gas analysis techniques, in this part, the proposed techniques are classified into four techniques. The integration between the different DGA techniques not only improves the oil fault condition monitoring but also overcomes the individual weakness, and this positive feature is proved by using 532 samples from the Egyptian Electricity Transmission Company (EETC). The second part overview the experimental setup for (66/11.86 kV–40 MVA) power transformer which exists in the Egyptian Electricity Transmission Company (EETC), the first section in this part analyzes the dissolved gases concentricity for many samples, and the second section illustrates the measurement of PD particularly in this case study. The results demonstrate that precise interpretation of oil transformers can be provided to system operators, thanks to the combination of the most appropriate techniques.

scholarly journals FINNIM: Iterative Imputation of Missing Values in Dissolved Gas Analysis Dataset

2014 ◽  
Vol 10 (4) ◽  
pp. 2093-2102 ◽  
Author(s):  
Zahriah Sahri ◽  
Rubiyah Yusof ◽  
Junzo Watada
Keyword(s):  
Missing Values ◽  
Gas Analysis ◽  
Dissolved Gas ◽  
Dissolved Gas Analysis
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