In the context of shaping the mobility of the future in a sustainable way, a clear trend towards e-mobility is emerging. Public transportation fleets are electrified while the public and private charging station infrastructure is expanded.
Given the increasing number of electric vehicles – and associated increase in the number of charging stations – simultaneous charging processes can cause network congestion and subsequently outages. If strengthening the network is too costly or structurally impossible, PSIsmartcharging offers the ideal, sustainable platform for intelligent control and optimization of charging processes. In addition to grid stabilizing aspects, the system also takes into account operational demands and economic factors in the following areas:
The modular structure and use of standardized communication interfaces make PSIsmartcharging manufacturer-independent and cater for virtually unlimited scalability and expandability. Leveraging PSI’s expertise in grid control systems, network technology, public transport, and logistics will bring the greatest benefits to the customer.
For the public transport of the future, PSIsmartcharging exchanges data directly with bus depot management systems ensuring that electric buses’ batteries are charged in time for their planned routes and that safety aspects are observed. It continuously monitors the electrical grid and, in the event of imminent overload or restrictions in the energy supply, redistributes power to restore a stable network status.
The system can flexibly factor changes in electricity prices into the charge planning and generate long-term additional revenue by offering control power. PSIsmartcharging supports integration of battery storage capacity at the bus depot to increase flexibility.
PSIebus (depot and charging management system of our subsidiary PSI Transcom GmbH) provides Hamburger Hochbahn AG with an integrated software solution that leverages expertise in both public transport processes and energy supplies. The system combines the depot management module PSIeDMS with the charging management System PSIsmartcharging. It takes into account important influences and dependencies relevant for efficiently controlling, charging and dispatching vehicles – both at the depot and along the route.
PSIsmartcharging monitors the power grids and the connected equipment in multiple bus depots at our customer. The management system determines and applies an intelligent charging strategy for the vehicles by taking into account the available energy and power as well as operational requirements. This approach yields optimum efficiency, availability, and operational reliability.
Due to the rollout of the charging infrastructure for private transport the numbers of charging stations and wall boxes in the low voltage grid are increasing. Even just a few vehicles charging simultaneously can overload a low voltage power line; consequently, the charging processes need to be monitored and controlled with the locally installed grid capacity as constraint.
In future, charging capacities and charging times can be controlled in automated processes considerating the present grid status and customer preferences. Local renewable energy generation and available battery storage are considered and will increase flexibility for consumers in the low voltage line section.
We are a supplier of hardware and software solutions for the ALigN research project. The project participants are working on the development of suitable solution concepts in the area of "Expansion of charging infrastructure by special grid support" (ALigN).