![]() ![]() The gas concentrations, generation rates, specific gas ratios, and the total combustible gas are important parameters for interpreting the result of DGA. Key gasses formed by the degradation of oil and paper insulation are: (1) hydrogen (H 2), (2) ethylene (C 2H 4), (3) acetylene (C 2H 2), (4) carbon dioxide (CO 2), (5) ethane (C 2H 6), (6) methane (CH 4), and (7) carbon monoxide (CO). Practically, an oil transformer sample is regularly investigated at any time from all electrical devices without needing to turn it off. Besides, power transformers are considered the most key assets of electric power substations. Specifically, DGA is one of the most important tests for insulating fluid materials in the electrical components with different intelligent sensors. ![]() The results demonstrate that precise interpretation of oil transformers can be provided to system operators, thanks to the combination of the most appropriate techniques.ĭissolved gas analysis (DGA) is an efficient diagnostic way to the early detection of incipient transformer faults. 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 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). 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. 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. Indeed, the discontinuity of these transformers is expensive and can lead to excessive economic losses for the power utilities. 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. Power transformers are considered important and expensive items in electrical power networks. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |