On September 17th, 2019, the Workshop on Dependable Solution for Intelligent Electricity Distribution Grid (DSOGRI2019), supported by the Net2DG Project, took place in Naples, Italy, co-located with the European Dependable Computing Conference (EDCC 2019).
Papers addressed several topics, from the impact of measurement errors on the evaluation of electricity distribution grids to the modelling of smart grid applications and solutions for cyber security design and assessment. A panel session concluded the Workshop with further discussion with experts on communication networks, cyber-security and data quality providing interesting insights for researchers and for Net2DG project. The Workshop proceedings are published by IEEE CPS as special Chapter in the main EDCC conference proceedings, from page 153 to page 18.
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Net2DG showcases future-proof connectivity of PV
Net2DG recently managed to successfully integrate a 10-year-old PV system, located in the field test region of Stadtwerke Landau, into the communications architecture of the project. This was achieved very efficiently by retrofitting the plant’s Fronius IG Plus inverter with an off-the-shelf Fronius Datamanager 2.0 plug-in option card. The plant operator’s local network is in use for establishing Internet connection to the monitoring platform Fronius Solar.web (www.solarweb.com). On the side of the platform, we use an API to connect to the ICT Gateway of Net2DG. Thus, electrical data from the inverter representing the state of the local grid can easily be leveraged for Net2DG use cases. This showcases how future-proof PV systems can be in terms of connectivity.
Following the success of the first edition, the Net2DG project supports again the International Workshop on "Dependable Solution for Intelligent Electricity Distribution Grid (DSOGRI)".
The workshop will provide a forum for researchers and engineers in academia and industry for discussing and analyzing current solutions, approaches, research results, experiences and products in the field of intelligent electricity grids to investigate issues related to the ICT-based management of failures, including cyber-security aspects.
The field trial at the German DSO Stadtwerke Landau a. d. Isar demonstrates the benefits of fusing and processing electrical measurements for Distribution System Operators.
Electrical measurements from a secondary substation, from intermediate junction boxes, and from multiple smart inverters are collected, fused and processed for voltage quality and grid efficiency monitoring. A secondary substation that serves via five LV feeders around 70 customers (about 25 of those have photo-voltaics installations) has been selected for the field trial in Landau. Measurement devices have been deployed at the substation and in junction boxes (see figure). In addition, measurements from two PV inverters in the field trial region have been connected to the Net2DG solutions.
The first phase of the field trial until end of 2019 showed that the heterogeneous measurement data can be collected reliably. Also, the data can be successfully linked to the grid topology data that is provided via an interface to the Net2DG solution. “The team did an excellent job when integrating the Net2DG software components with the local physical grid”, says Hans-Peter Schwefel, GridData CEO and Technical Head of the Net2DG project. Currently the benefits of processing this joint data for voltage quality and loss calculations is being demonstrated. "Utilizing the available measurements for fault management, grid efficiency analysis, and grid planning provides us as Distribution System Operator huge advantages. We can do our trouble shooting and grid upgrade planning based on true operational data without any manual data collection, preparation and processing efforts. This will help us to continue to provide a reliable and efficient electricity distribution and cope with the challenges from the ongoing energy transition" says Robert Damböck, head of electricity grids at Stadtwerke Landau.