Electromagnetic interferences in smart grid applications: a case study with power line communication smart meters and PV energy generation

Roggo, Dominique; Horta, Rodolfo; Capponi, Lino; Eggenschwiler, Loic; Decorvet, Fabrice; Pellodi, Cédric; Buholzer, Franz

doi:10.1049/oap-cired.2017.1285

Cited by 9 publications

(9 citation statements)

References 3 publications

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“…In [3], it is reported that NIE from a PV inverter and a battery charger caused changes in the topology of a PRIME network and even blocked the access to some communication nodes. Similar observations of PV inverters interfering with a PLC transmission system with FSK (Frequency-Shift Keying) modulation are described in [35]. Reference [36] refers to underperformance of smart meters in real deployments in Spain due to non-permanent noise levels that were found to be significantly higher than maximum limits allowed for intended transmitters.…”

Section: Narrowband Power Line Communications (Nb-plc) and Non-intentmentioning

confidence: 76%

Field Trials for the Characterization of Non-Intentional Emissions at Low-Voltage Grid in the Frequency Range Assigned to NB-PLC Technologies

et al. 2019

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The paper describes the results of a measurement campaign to characterize the non-intentional emissions (NIE) that are present in the low voltage section of the electrical grid, within the frequency range assigned to narrowband power line communications (NB-PLC), from 20 kHz to 500 kHz. These NIE may severely degrade the quality of the communications and, in some cases, even isolate the transmission devices. For this reason, the identification and characterization of these perturbations are important aspects for the proper performance of the smart grid services based on PLC. The proper characterization of NIE in this frequency range is a key aspect for the selection of efficient configurations to find the best trade-off between data throughput and robustness, or even for the definition of new improved error detection and correction methods. The huge number of types of NIE, together with the wide variety of grid topologies and loads distribution (density and location of homes and industrial facilities) are great challenges that complicate the thorough characterization of NIE. This work contributes with results from field trials in different scenarios, the identification of different types of NIE and the characterization both in time and frequency domains of all the registered disturbances. This contribution will be helpful for a better knowledge of the electrical grid as a transmission medium for PLC and, therefore, for evaluating the appropriateness of different robustness techniques to be applied in the next generation of smart grid services.

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Section: Narrowband Power Line Communications (Nb-plc) and Non-intentmentioning

confidence: 76%

Field Trials for the Characterization of Non-Intentional Emissions at Low-Voltage Grid in the Frequency Range Assigned to NB-PLC Technologies

et al. 2019

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“…Reference [81] presents a great study along this research line, addressing the impact of several DER (namely, hydropower turbine and pump, PV inverters, and storage equipment) on NBPLC PRIME communications based on a set of experiments carried out at the Spanish CEDER (Center for the Development of Renewable Energies). Reference [82] also addresses this issue by investigating the impact of changes in impedance related to PV production on the quality transmission of FSK NBPLC networks by means of field measurements, simulations and measurements taken from a simple laboratory setup. This paper represents another contribution along this research line, presenting some features which stand out among current state of the art.…”

Section: Discussionmentioning

confidence: 99%

Noise Sources, Effects and Countermeasures in Narrowband Power-Line Communications Networks: A Practical Approach

et al. 2017

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Abstract:The integration of Distributed Generation, Electric Vehicles, and storage without compromising the quality of the power delivery requires the deployment of a communications overlay that allows monitoring and controlling low voltage networks in almost real time. Power Line Communications are gaining momentum for this purpose since they present a great trade-off between economic and technical features. However, the power lines also represent a harsh communications medium which presents different problems such as noise, which is indeed affected by Distributed Generation, Electric Vehicles, and storage. This paper provides a comprehensive overview of the types of noise that affects Narrowband Power Line Communications, including normative noises, noises coming from common electronic devices measured in actual operational power distribution networks, and noises coming from photovoltaic inverters and electric vehicle charging spots measured in a controlled environment. The paper also reviews several techniques to mitigate the effects of noise, paying special attention to passive filtering, as for being one of the most widely used solution to avoid this kind of problems in the field. In addition, the paper presents a set of tests carried out to evaluate the impact of some representative noises on Narrowband Power Line Communications network performance, as well as the effectiveness of different passive filter configurations to mitigate such an impact. In addition, the considered sources of noise can also bring value to further improve PLC communications in the new scenarios of the Smart Grid as an input to theoretical models or simulations.

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“…In the design of the so-called IGOR-Meter, particular attention was put on flexibility, high accuracy, a wide frequency range, portability and low impact on other equipment connected to the grid. Based on the previous experience of this group, grid impedance measurements were applied in the evaluation of NB-PLC communication channels in the lab and in the field [51].…”

Section: Methods I: Igor-metermentioning

confidence: 99%

Comparison of Measurement Methods of LV Grid Access Impedance in the Frequency Range Assigned to Nb‑Plc Technologies

et al. 2019

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The paper presents and evaluates three advanced methods for the characterization of the low-voltage (LV) grid access impedance for the frequency range assigned to Narrow Band-Power Line Communications (NB-PLC): 9 kHz to 500 kHz. This study responds to the recent demand from both regulatory bodies and Distribution System Operators about the need for accurate and validated methods for this frequency band, due to the limited knowledge of the impedance values in the electrical grid and their influence on NB-PLC transmission channels. In this paper, the results of a collaborative work to develop different proposals to overcome the challenges for the proper characterization of the frequency and time-varying grid impedance, from different theoretical approaches, are presented. The methods are compared in a controlled and isolated scenario: the impedance characterization of passive filters. Then, the results are validated two-fold: first, against theoretical simulations, based on the schematics provided by the manufacturer, and second, against the measurement results of a precision impedance meter, used as a reference of accuracy. The results demonstrate a high degree of precision of the three proposals to characterize the access impedance of the LV grid.

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Electromagnetic interferences in smart grid applications: a case study with power line communication smart meters and PV energy generation

Cited by 9 publications

References 3 publications

Field Trials for the Characterization of Non-Intentional Emissions at Low-Voltage Grid in the Frequency Range Assigned to NB-PLC Technologies

Field Trials for the Characterization of Non-Intentional Emissions at Low-Voltage Grid in the Frequency Range Assigned to NB-PLC Technologies

Noise Sources, Effects and Countermeasures in Narrowband Power-Line Communications Networks: A Practical Approach

Comparison of Measurement Methods of LV Grid Access Impedance in the Frequency Range Assigned to Nb‑Plc Technologies

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