A High-Frequency Digitiser System for Real-Time Analysis of DC Grids with DC and AC Power Quality Triggering

Author:

Oliván Miguel A.1ORCID,Pérez-Aragüés Juan J.2ORCID,Melero Julio J.3ORCID

Affiliation:

1. CIRCE Technology Centre, 50018 Zaragoza, Spain

2. CIRCE Technology Centre and Instituto Universitario de Investigación Mixto CIRCE (University of Zaragoza—Fundación CIRCE), 50018 Zaragoza, Spain

3. Instituto Universitario de Investigación Mixto CIRCE (University of Zaragoza—Fundación CIRCE), 50018 Zaragoza, Spain

Abstract

The presence of DC grids in distribution networks is being increased nowadays and is expected to be quite relevant in a near future, due to several advantages compared to traditional AC systems. Regardless of this, Power Quality in DC grids (DC PQ) (voltage variations, transients, spectral components, etc.) still remains not properly considered and there is a lack of reference normative documents such as standards, application guides or technical reports for their application. In this context, it is necessary to obtain more experience on real measurements, in order to define appropriate DC PQ parameters and limits that assess a reliable operation of the whole power network and eventually lead to establishing a reference frame acceptable for both generation sources and final users. In this work, a novel high frequency (up to 4 MS/s) digitiser system is presented for the study of DC PQ events. The system is designed to acquire waveforms with triggers fired by events in both DC and AC signals. The captured signals are pre-processed in real-time to be able to recover pre-trigger information stored in memory. The system was installed in a real DC micro-grid and configured to take data in an unattended way. Additionally, the results of the first months of data acquisition are presented.

Funder

EMPIR programme co-financed by the Participating States

European Union’s Horizon 2020 research and innovation programme

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Power Quality Measurements in a Low-Voltage DC Microgrid in an Open Parking Garage;2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC);2024-05-20

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