To ensure smooth communication and collaboration, here are some troubleshooting tips to address common issues:
Check Internet Connection: Verify that you have a stable and reliable internet connection. Use a wired connection when possible, as it tends to be more stable than Wi-Fi. If using Wi-Fi, make sure you have a strong signal.
Update the Browser or App: Ensure that you are using the latest version of the web browser. Developers frequently release updates to address bugs and improve performance.
Clear Browser Cache: Sometimes, cached data can cause conflicts or issues. Clear the browser cache and cookies before joining the meeting.
Test Audio and Video: Before the meeting, check your microphone and camera to ensure they are working correctly. If you are a speaker, you can click on "Start Practice Session" button test to ensure audio and video devices are functioning.
Close Other Applications: Running multiple applications in the background can consume system resources and lead to performance issues. Close unnecessary apps to free up resources for the Dryfta meeting platform.
Restart Your Device: If you encounter persistent issues, try restarting your computer or mobile device. This can help resolve various software-related problems.
Use Supported Browsers: Ensure you are using a browser supported by the meeting platform. Recommended browsers: Chrome, Firefox, Edge, and Brave.
Allow Necessary Permissions: Make sure the Dryfta meeting platform has the required permissions to access your microphone, camera, and other necessary features.
Disable VPN or Firewall: Sometimes, VPNs or firewalls can interfere with the connection to the meeting platform. Temporarily disable them and see if the issue persists.
Switch Devices: If possible, try joining the meeting from a different device to see if the problem is specific to one device.
Reduce Bandwidth Usage: In cases of slow or unstable internet connections, ask participants to disable video or share video selectively to reduce bandwidth consumption.
Update Drivers and Software: Ensure your operating system, audio drivers, and video drivers are up to date. Outdated drivers can cause compatibility issues with the Dryfta meeting platform.
Contact Support: If none of the above steps resolve the issue, reach out to the platform's support team. They can provide personalized assistance and troubleshoot specific problems.
By following these troubleshooting tips, you can tackle many common problems encountered on Dryfta meeting platform and have a more productive and seamless meeting experience.
Can “behind the meter” EV charging support the Positive Energy District movement while taking stress of the distribution grid?View Abstract Oral presentationUrban Energy01:30 PM - 03:00 PM (Europe/Amsterdam) 2022/02/16 12:30:00 UTC - 2022/02/16 14:00:00 UTC
On one hand, the European Commission calls for 100 “Positive Energy Districts” (PEDs) to be in the phase between planning and termination by 2025. A PED is a neighbourhood that annually exports more energy than it imports [1]. On the other hand, many urban regions’ electricity distribution grids already struggle to cope with high power demands by electrification of transport and heating, as well as PV power exports during sunny hours. Amsterdam´s distribution system operator Liander announced that parts of the local electricity system already reached their maximal capacity [2], which is also mentioned in [3]. One solution that could “kill two birds with one stone” could be “behind the meter” electric vehicle charging by PV generation. This allows for further installation of PV panels on unused roof space and further charging capacity for electric vehicles without requiring additional grid capacity. Moreover, EV charging could be cleverly integrated into the concept of PEDs to increase the export of energy without straining the distribution grid. This work will focus on comparing “behind the meter” charging with “in front of the meter” charging in terms of cost and grid impact and will discuss preliminary results in the context of PEDs. [1] European Commission, “SET-Plan ACTION n°3.2 Implementation Plan,” 2018. [Online]. Available: https://jpi-urbaneurope.eu/wp-content/uploads/2018/09/setplan_smartcities_implementationplan.pdf. [2] Liander, “Transportcapaciteit in Amsterdam,” 2021. https://www.liander.nl/transportcapaciteit/amsterdam. [3] S. Halleck Vega, E. van Leeuwen, and N. van Twillert, “Uptake of residential energy efficiency measures and renewable energy: Do spatial factors matter?,” Energy Policy, vol. 160, Jan. 2022.
Presenters Axel Bruck Instituto Tecnológico De Canarias, TU Vienna
The multifunctional transport grid with EV-chargers as a necessity for a sustainable PV-powered networkView Abstract Oral presentationSmart Urban Mobility01:30 PM - 03:00 PM (Europe/Amsterdam) 2022/02/16 12:30:00 UTC - 2022/02/16 14:00:00 UTC
The global transport sector relies heavily on fossil fuels that it is the second growing CO2-emitting sector, standing already at 22% to 24% of total GHG emissions [1], [2]. In Europe, this number is at 40% [3]. While the electrification of urban transportation is already a mature and efficient technology [4], the solution is only meaningful if the power comes from sustainable sources. PV systems are an attractive suggestion as they are DC systems like light rail networks, scalable, and easy to install in an urban environment. Indeed, among the Renewable Energy Sources (RES) possibilities for supplying transport grids, PV energy is currently the most promising and most studied source for this type of application [5]–[8]. Unfortunately, PV systems in transport grids do not generally offer independence from the AC grid, as a consequence of the mismatch between the intermittent PV power generation and the bus scheduling (absence of load). This creates the need for large, seasonal storage systems and/or exchange with the AC grid. This presentation looks at the results for a case study of the Arnhem (NL) and Gdynia (PL) trolleybus grids and shows how the path toward the sustainability of urban light rail must pass first through the transformation of these transport grids to multifunctional, active grids with a baseload of smart grid loads such as EV-chargers.
An operational bidding framework for aggregated electric vehicles on the electricity spot marketView Abstract Oral presentationSmart Urban Mobility01:30 PM - 03:00 PM (Europe/Amsterdam) 2022/02/16 12:30:00 UTC - 2022/02/16 14:00:00 UTC
We present a smart charging bidding framework that submits an optimal bid to the day-ahead electricity market by harnessing the flexibility of electric vehicles. Its optimization objective is to minimize the charging costs of the total EV fleet. The bidding framework consists of a forecasting module for the day-ahead price and for the EV flexibility, and of a linear optimization module to compose the most optimal bid. We explore several regression and machine learning models as possibility for the forecast modules. In order to assess the composition of a most optimal operational bidding framework, we compare the outcome of the bidding module when fed with each of these models. We show that the combination of forecasting modules that creates on average the lowest charging costs, lead to savings of around 26%. These costs are calculated by by considering the day-ahead price and the imbalance price as a penalty for forecasting errors. We find that the most accurate self-contained forecasting modules, do not deliver the best over-all results when included in the bidding framework.
Axel Bruck
Ibrahim Diab
Marieke Kootte
