Novel dual-resonance damped alternating current testing system for offline partial discharge measurement of power cables

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Li Wang, Lei Jin, Junbai Chen, Hongjie Li
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Abstract

To accurately detect the early deterioration of electrical insulation in power cables, an energizing system is required for offline partial discharge (PD) measurements. The damped alternating current (DAC) testing system has emerged as an effective tool for inducing PD events. However, the existing systems often suffer from limitations such as signal interference, low sensitivity, and high costs. To address these issues, this study proposes a novel dual-resonance DAC testing system that is simple in structure and cost-effective. The prototype was built for testing 10-kV distribution cables, and its effectiveness was validated through experimental tests on a cable sample. The results show that this approach significantly improves PD detection sensitivity and successfully completes PD localization. This research contributes to the development of more efficient and affordable DAC generation technology for power cable testing applications.

Abstract Image

用于离线测量电力电缆局部放电的新型双谐振阻尼交流电测试系统
为了准确检测电力电缆中电气绝缘的早期劣化,需要一个通电系统来进行离线局部放电(PD)测量。阻尼交流电(DAC)测试系统已成为诱导局部放电事件的有效工具。然而,现有系统往往存在信号干扰、灵敏度低和成本高昂等局限性。为解决这些问题,本研究提出了一种结构简单、成本低廉的新型双共振 DAC 测试系统。研究人员制作了用于测试 10 千伏配电电缆的原型,并通过对电缆样本的实验测试验证了其有效性。结果表明,这种方法大大提高了 PD 检测灵敏度,并成功完成了 PD 定位。这项研究有助于为电力电缆测试应用开发更高效、更经济的 DAC 生成技术。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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