The 8AE-PD computer measurement system for registration and analysis of acoustic emission signals generated by partial discharges in oil power transformers

IF 1 4区工程技术 Q4 INSTRUMENTS & INSTRUMENTATION

Metrology and Measurement Systems Pub Date : 2023-07-20 DOI:10.24425/MMS.2019.128355

F. Witos, Z. Opilski, G. Szerszeń, M. Setkiewicz

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引用次数: 7

Abstract

A computer measurement system, designed and built by authors, dedicated to location and description of partial discharges (PD) in oil power transformers examined by means of the acoustic emission (AE) method is presented. The measurement system is equipped with 8 measurement channels and ensures: monitoring of signals, registration of data in real time within a band of 25–1000 kHz in laboratory and real conditions, basic and advanced analysis of recorded signals. The basic analysis carried out in the time, frequency and time-frequency domains deals with general properties of the AE signals coming from PDs. The advanced analysis, performed in the discrimination threshold domain, results in identiﬁcation of signals coming from diﬀerent acoustic sources as well as location of these sources in the examined transformers in terms of deﬁned by authors descriptors and maps of these descriptors on the side walls of the tested transformer tank. Examples of typical results of laboratory tests carried out with the use of the built-in measurement system are presented.

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8AE-PD计算机测量系统用于油变压器局部放电声发射信号的标定与分析

本文介绍了一种由作者自行设计和研制的计算机测量系统，用于用声发射(AE)法检测油变压器局部放电的位置和描述。测量系统配备8个测量通道，可确保:监测信号，在实验室和实际条件下在25-1000 kHz的频带内实时记录数据，对记录信号进行基础和高级分析。在时域、频域和时频域中进行的基本分析处理了来自pd的声发射信号的一般特性。在识别阈值域中进行的高级分析可以识别来自不同声源的信号，并根据作者定义的描述符和被测变压器箱侧壁上这些描述符的图确定被测变压器中这些声源的位置。给出了使用内置测量系统进行的典型实验室测试结果的实例。

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

Metrology and Measurement Systems INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.00

自引率

10.00%

发文量

审稿时长

6 months

期刊介绍： Contributions are invited on all aspects of the research, development and applications of the measurement science and technology. The list of topics covered includes: theory and general principles of measurement; measurement of physical, chemical and biological quantities; medical measurements; sensors and transducers; measurement data acquisition; measurement signal transmission; processing and data analysis; measurement systems and embedded systems; design, manufacture and evaluation of instruments. The average publication cycle is 6 months.