Design Approach for a Stand Alone Merging Unit

Giuliano Cipolletta, Antonio Delle Femine, Daniele Gallo, Carmine Landi, Mario Luiso

Abstract

In order to enhance levels of security and reliability of power systems, allowing for advanced remote diagnostics, Merging Units (MUs) play a key role. Some of the benefits are a more efficient transmission of electricity and a better integration with renewable energy systems. In this paper an implementation of a Stand Alone Merging Unit (SAMU), compliant with the IEC 61850-9-2 standard and based on a low cost ARM microcontroller, is described. It acquires two signals, one voltage and one current, and it sends the samples over the Ethernet connection. A high-resolution analog to digital converter (ADC), synchronized to the Universal Time coordinated (UTC) through a Global Positioning System (GPS) disciplined oscillator, is used. The results of the characterization of the ADC are presented.

Keywords

Power System Measurement, Power System Diagnostics, Stand Alone Merging Unit, Time Synchro- nization, Analog To Digital Converter

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IMEKO-TC10-2019-016.pdf

DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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