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首页> 外文期刊>International Journal of Electrical Engineering: Transactions of the Chinese Institute of Engineers, Series E >EXPERIMENTAL INVESTIGATIONS TO EVOLVE NUMERICAL APPROACH TO INTERPRET FRA DATA FOR CONDITION ASSESSMENT OF TRANSFORMERS
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EXPERIMENTAL INVESTIGATIONS TO EVOLVE NUMERICAL APPROACH TO INTERPRET FRA DATA FOR CONDITION ASSESSMENT OF TRANSFORMERS

机译:对变压器FRA数据进行数值评估以进行变压器状态评估的实验研究

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摘要

Experimental investigations were carried out on a transformer for various simulated faults to study the applicability of various statistical tools to interpret Sweep Frequency Response Analysis (SFRA) data for diagnosing condition of the transformer. The various statistical parameters were computed, from the SFRA data, in three different frequency bands. Frequency responses among identical phases of the sister units and different phases of a healthy three phase transformer were used to obtain the realistic statistical parameters for comparison. Deviation of the statistical parameters from the realistic parameters for different types of faults is analyzed to diagnose the condition of the transformer. The analysis of the deviations in the parameters suggests the possibility of using the numerical approach to diagnose the transformer winding displacements and deformations. Interpretations of the results presented in the paper also indicate the possibility of discriminating the faulty winding using numerical parameter, computed from reference base data, symmetry of the windings, sister units and type of winding approach, and comparing them with the realistic statistical parameters presented in the paper.
机译:在变压器上针对各种模拟故障进行了实验研究,以研究各种统计工具对解释扫频响应分析(SFRA)数据以诊断变压器状况的适用性。根据SFRA数据,在三个不同的频段中计算了各种统计参数。使用姐妹单元的相同相与健康的三相变压器的不同相之间的频率响应来获得实际的统计参数以进行比较。对于不同类型的故障,分析统计参数与实际参数的偏差,以诊断变压器的状况。对参数偏差的分析表明,可以使用数值方法来诊断变压器绕组的位移和变形。对本文中给出的结果的解释还表明,有可能使用由参考基准数据,绕组的对称性,姊妹单位和绕组方式类型计算出的数值参数来区分故障绕组,并将其与实际的统计参数进行比较。纸。

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