UHF Partial Discharge Detection and Localization: On-Site Experiences at 110-kV-Cable Terminations

IF 3.8 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Delivery Pub Date : 2025-02-17 DOI:10.1109/TPWRD.2025.3542846

Rouven Berkemeier;Robert Bach;Stefan Tenbohlen

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Abstract

The measurement of partial discharges (PD) has already proven itself for the use at cable systems. PD measurement is particularly relevant in the area of cable accessories, as both the cable joints and the cable terminations are the most frequent cause of faults within the cable system. Among other things, this can be traced back to assembly faults or improper work. Ultra-high Frequency (UHF) PD measurement is becoming more important in the field of cable terminations. This contribution shows how an on-site measurement can be performed on various 110-kV-cable terminations with a self-developed UHF system. The UHF-PD tests were carried out in two substations. In the first substation, the tests were performed under AC operating voltage on a total of six cable terminations. With the UHF system, both corona discharges and surface discharges could be reliably detected. In the second substation, the UHF PD test was performed in combination with a commissioning test with Damped AC-Test Voltage (DAC). During the commissioning test, PD activity was detected on phases L2 and L3, both in the area of the cable termination. The results of the UHF system confirm those of the conventional PD measurement performed in parallel.

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超高频局部放电检测与定位：110kv电缆终端现场经验

局部放电（PD）的测量已经证明了它在电缆系统中的应用。PD测量在电缆附件领域尤为重要，因为电缆接头和电缆终端都是电缆系统中最常见的故障原因。除此之外，这可以追溯到装配故障或工作不当。超高频（UHF） PD测量在电缆终端领域变得越来越重要。这一贡献显示了如何使用自行开发的UHF系统对各种110kv电缆终端进行现场测量。UHF-PD试验在两个变电站进行。在第一个变电站，试验是在交流工作电压下对总共六个电缆终端进行的。使用超高频系统，可以可靠地检测电晕放电和表面放电。在第二个变电站，UHF PD测试与阻尼交流测试电压（DAC）的调试测试结合进行。在调试测试期间，在电缆终端区域的L2和L3阶段检测到PD活动。UHF系统的测量结果与传统的并行PD测量结果一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Power Delivery 工程技术-工程：电子与电气

CiteScore

9.00

自引率

13.60%

发文量

513

审稿时长

6 months

期刊介绍： The scope of the Society embraces planning, research, development, design, application, construction, installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy. It includes the developing of engineering standards, the providing of information and instruction to the public and to legislators, as well as technical scientific, literary, educational and other activities that contribute to the electric power discipline or utilize the techniques or products within this discipline.