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Measurement of Activation Energy and Accelerated Degradation Time by Thermal Analysis Methods for Polymeric Insulating Materials
Journal of Electrical Engineering & Technology ( IF 1.9 ) Pub Date : 2020-11-20 , DOI: 10.1007/s42835-020-00606-3
Heon-Gyeong Lee , Jae-Seung Jung , Jin-Gyu Kim

With the development of HVDC systems, there has been much research regarding insulating materials applied in the DC environment. Of particular concern is the degradation of electrical insulation due to external environmental factors caused by the long-term use of the insulation material of a power device. If such degradation continues, a leakage current may flow on the surface of the insulating material, eventually causing a partial discharge and potentially resulting in a major accident. Therefore, it is necessary to understand the long-term reliability of insulation materials. To do this, accelerated degradation tests and lifetime analyses should be performed by measuring the activation energy of insulation materials. There are currently various analytical methods to determine the activation energy, but the values obtained according to the different analysis methods vary. Because there are no established measurement criteria, it is necessary to accurately measure the activation energy of insulation materials. Therefore, in this paper, six analysis methods were performed through thermogravimetric analysis (TGA) to measure the activation energy, which was used to select the degradation time for the accelerated degradation test for which a reliable degradation time for acceleration degradation could be calculated. As a result of the experiment, deterioration acceleration time appeared in the order of PP > PE > PTFE > UPE, and accelerated deterioration of the insulating material through the deterioration time range measured in a future study will be performed to evaluate the life of each insulating materials.

中文翻译:

聚合绝缘材料热分析法测定活化能和加速降解时间

随着高压直流系统的发展,对直流环境中应用的绝缘材料进行了大量研究。尤其值得关注的是,由于功率器件的绝缘材料长期使用而导致的外部环境因素导致电绝缘性能下降。如果这种劣化继续下去,漏电流可能会流过绝缘材料的表面,最终导致局部放电并可能导致重大事故。因此,有必要了解绝缘材料的长期可靠性。为此,应通过测量绝缘材料的活化能来进行加速退化测试和寿命分析。目前有多种分析方法来确定活化能,但是根据不同的分析方法得到的值是不同的。由于没有既定的测量标准,需要准确测量绝缘材料的活化能。因此,在本文中,通过热重分析(TGA)进行了六种分析方法来测量活化能,用于选择加速降解试验的降解时间,从而可以计算出加速降解的可靠降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。由于没有既定的测量标准,需要准确测量绝缘材料的活化能。因此,在本文中,通过热重分析(TGA)进行了六种分析方法来测量活化能,用于选择加速降解试验的降解时间,从而可以计算出加速降解的可靠降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。由于没有既定的测量标准,需要准确测量绝缘材料的活化能。因此,在本文中,通过热重分析(TGA)进行了六种分析方法来测量活化能,用于选择加速降解试验的降解时间,从而可以计算出加速降解的可靠降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。需要准确测量绝缘材料的活化能。因此,在本文中,通过热重分析(TGA)进行了六种分析方法来测量活化能,用于选择加速降解试验的降解时间,从而可以计算出加速降解的可靠降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。需要准确测量绝缘材料的活化能。因此,在本文中,通过热重分析(TGA)进行了六种分析方法来测量活化能,用于选择加速降解试验的降解时间,从而可以计算出加速降解的可靠降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。通过热重分析(TGA)进行六种分析方法测量活化能,用于选择加速降解试验的降解时间,从而可以计算出可靠的加速降解降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。通过热重分析(TGA)进行六种分析方法测量活化能,用于选择加速降解试验的降解时间,从而可以计算出可靠的加速降解降解时间。作为实验的结果,劣化加速时间出现的顺序为 PP > PE > PTFE > UPE,并且将在未来研究中测量的劣化时间范围内进行绝缘材料的加速劣化,以评估每个绝缘材料的寿命材料。
更新日期:2020-11-20
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