Installation and initial measurement results of the Rogowski-coil-based wind turbine lightning current waveform measurement system

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Electric Power Systems Research Pub Date : 2024-09-21 DOI:10.1016/j.epsr.2024.111061

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Abstract

This paper introduces a lightning current waveform measurement system developed at the University of Zagreb's high-voltage laboratory. It details the installation process and initial measurements of the prototype, which was deployed on a wind turbine in the southern part of Croatia, an area prone to winter lightning activity. The system employs two Rogowski coils - one high-frequency, high-amplitude (1 MHz, ±250 kA) and one low-frequency, low-amplitude (10 kHz, ±12.5 kA) - both fixed with magnets near the base of the wind turbine tower. The system efficiently captures both continuing-type currents, such as initial continuous currents, and pulse-type currents, such as return strokes and superimposed impulses. A detailed analysis of a typical upward lightning strike highlights the challenges in waveform measurement, including issues like 2-MHz oscillations in high-frequency sensor measurements and DC offsets in low-frequency sensor measurements. Validation against lightning location system data confirms the overall effectiveness of the current measurements, with the return stroke timestamps matching within the millisecond range.

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基于罗戈夫斯基线圈的风力涡轮机雷电流波形测量系统的安装和初步测量结果

本文介绍了萨格勒布大学高压实验室开发的雷电流波形测量系统。它详细介绍了原型系统的安装过程和初步测量结果，该系统部署在克罗地亚南部地区的一台风力涡轮机上，该地区冬季雷电活动频繁。该系统采用两个罗戈夫斯基线圈--一个高频、高振幅（1 MHz，±250 kA），一个低频、低振幅（10 kHz，±12.5 kA）--均用磁铁固定在风力涡轮机塔基附近。该系统可有效捕捉持续型电流（如初始持续电流）和脉冲型电流（如回击和叠加脉冲）。对典型向上雷击的详细分析突出了波形测量的挑战，包括高频传感器测量中的 2-MHz 振荡和低频传感器测量中的直流偏移等问题。根据闪电定位系统数据进行的验证证实了电流测量的整体有效性，回击时间戳的匹配度在毫秒范围内。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.