诊断标志对电动机相间绝缘技术状况影响的数学证明

T. Altukhova
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引用次数: 0

摘要

在这项科学工作中,研究了诊断信号对电动机相间绝缘技术状况的负面影响。建立了一个计算机模型来确定通过相间绝缘的泄漏电流与相电流之间的关系。计算实验表明,相间绝缘损伤与相电流差有关,而与电流本身无关。得到的相关系数值表明,绝缘电阻与电动机相电流差之间存在函数关系,从而证实了某些因素对相间绝缘技术条件影响的假设。经确定,由于相关因素,在电动机相电流存在差异的情况下,发生此类损坏的概率为33%。所获得的研究成果可用于绝缘状态监测和绝缘损伤预防以及与绝缘破坏相关的紧急情况预防的诊断系统模型的开发。
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MATHEMATICAL SUBSTANTIATION OF THE INFLUENCE OF DIAGNOSTIC SIGNS ON THE TECHNICAL CONDITION OF THE INTERPHASE INSULATION OF ELECTRIC MOTORS
In this scientific work, a study of the negative impact of diagnostic signs on the technical condition of the interphase insulation of electric motors was performed. A computer model was developed to determine the relationship between the leakage current through the interphase insulation and the phase currents. A computational experiment was conducted, where it was established that the damage to the interphase insula-tion reliably correlates with the differences between the phase currents, but not with the currents themselves. The obtained values of the correlation coefficient showed that there is a functional relationship between the insulation resistance and the difference in the phase currents of the electric motors, thus confirming the hy-pothesis of the influence of certain factors on the technical condition of the interphase insulation. It was de-termined that the probability of such damage occurring in the presence of a difference in phase currents in electric motors due to relevant factors is 33%. The obtained research results can be used in the development of models of diagnostic systems under the condition of monitoring the condition and prevention of insula-tion damage and prevention of emergency situations associated with its violations.
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