CAJ | 학술논문

XLPE电缆绝缘诊断的研究对于掌握电缆的绝缘老化状态,保证电力传输系统的安全可靠运行有着十分重要的意义。针对工程实际中大规模应用的诊断方法不多见的现状,提出了一种XLPE电缆状态检测的新方法,即用电磁波在一段XLPE电缆中的传播速度作为诊断这段电缆是否发生老化的依据。在阐明了该方法的原理和理论依据后介绍了所搭建的实验平台,按照提出的方法对两条不同绝缘老化状态的XLPE电缆进行了诊断测量并在测量数据的处理中确定了标定电磁波往返时间的有效方法。结果表明,用电磁波速进行XLPE电缆绝缘诊断可以很好的表征出两条XLPE电缆是否已发生了老化。最后,对测得的波形进行了说明,并通过将电磁波速的测量值与理论值进行对比,表明这一方法具有较高的准确性和可靠性,从而为XLPE电缆绝缘诊断提供新的思路。
XLPE전람절연진단적연구대우장악전람적절연노화상태,보증전력전수계통적안전가고운행유착십분중요적의의。침대공정실제중대규모응용적진단방법불다견적현상,제출료일충XLPE전람상태검측적신방법,즉용전자파재일단XLPE전람중적전파속도작위진단저단전람시부발생노화적의거。재천명료해방법적원리화이론의거후개소료소탑건적실험평태,안조제출적방법대량조불동절연노화상태적XLPE전람진행료진단측량병재측량수거적처리중학정료표정전자파왕반시간적유효방법。결과표명,용전자파속진행XLPE전람절연진단가이흔호적표정출량조XLPE전람시부이발생료노화。최후,대측득적파형진행료설명,병통과장전자파속적측량치여이론치진행대비,표명저일방법구유교고적준학성화가고성,종이위XLPE전람절연진단제공신적사로。
The research on diagnosis of XLPE power cable insulation is of a great importance for realizing the cable insulation aging status and ensuring the power transmission system in safe and reliable operation.Therefore,we put forward a new method,using electromagnetic wave propagation velocity in an XLPE cable as the criterion of whether the aging happens in the cable,set out the principles of the method and theoretical basis,and built a test platform.In accordance with the method proposed,we measured two different levels of water tree aged XLPE cables.During the measurement data processing,we also researched how to get the round-trip time effectively.The result indicates that using electromagnetic wave speed for diagnosis of XLPE cable insulation can reflect the insulation status of the two XLPE cables primly.Comparison of the different results suggests that this method is accurate and reliable,so as to provide new ideas for diagnosis of XLPE cable insulation.