一种低成本产生MV失真电压的方法用于高达150khz的VT表征

IF 5.6 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Instrumentation and Measurement Pub Date : 2025-04-02 DOI:10.1109/TIM.2025.3557104

Palma Sara Letizia;Gabriella Crotti;Giovanni D’Avanzo;Antonio Delle Femine;Claudio Iodice;Mario Luiso;Domenico Giordano

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引用次数: 0

摘要

中压（MV）电网中频率高于10 kHz的干扰增加，导致了与仪表变压器（ITs）的准确表征相关的新的计量挑战，仪表变压器是监测这些干扰的测量链中的主要元素。在此背景下，本文提出了一种简单的发电系统架构，用于在实际电力系统波形下表征高达150 kHz的中压电压互感器（vt）。它能够在工频产生一个MV音调，并叠加具有降低幅度和更高频率的干扰。与最近在科学文献中讨论的需要两个独立电压源的其他方法不同，所提出的解决方案的主要优点是使用单个电压源，通过简单的补偿方法适当地补偿其系统误差。作为第一个应用，讨论了与两种商用VT （LPVT）特性相关的实验测试，一种是电感VT，一种是低功率VT。

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A Low-Cost Approach to Generate MV Distorted Voltage for VT Characterization up to 150 kHz

The increase in disturbances at frequencies higher than 10 kHz in medium voltage (MV) grids has led to new metrological challenges related to the accurate characterization of instrument transformers (ITs), which serve as the primary element in the measurement chain for the monitoring of these disturbances. In this context, this article presents a simple architecture of a generation system for the characterization of MV voltage transformers (VTs) up to 150 kHz under realistic power system waveforms. It is able to generate a MV tone at power frequency and superimposed disturbances having reduced amplitude and higher frequency. Unlike other approaches recently discussed in scientific literature that need two separate voltage sources, the main advantage of the proposed solution is the use of a single source, by suitably compensating its systematic errors through a simple compensation method. As first application, the experimental tests related to the characterization of two commercial VTs (LPVT), an inductive VT and a low power VT, are discussed.

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来源期刊

IEEE Transactions on Instrumentation and Measurement 工程技术-工程：电子与电气

CiteScore

9.00

自引率

23.20%

发文量

1294

审稿时长

3.9 months

期刊介绍： Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.