Abstract
Electric power systems are currently confronted with a fundamental paradigm change related to its planning and operation, mainly caused by the massive integration of renewables. To allow higher penetration of them within existing grid infrastructures, the “smart grid” makes more efficient use of existing resources by integrating appropriate information technologies. Utilising the benefits of such smart grids, it is necessary to develop new automation architectures and control strategies, as well as corresponding information and communication solutions. This makes it possible to effectively use and manage a large amount of dispersed generators and to utilise their “smart” capabilities. The scalability and openness of automation systems currently used by energy utilities have to be improved significantly for handling a high amount of distributed generators. This will be needed to meet the challenges of missing common and open interfaces, as well as the large number of different protocols. In the work at hand, these shortcomings have been tackled by a conceptual solution for open and interoperable information exchange and engineering of automation applications. The approach is characterised by remote controllable services, a generic communication concept, and a formal application modelling method for distributed energy resource components. Additionally, the specification of an access management scheme for distributed energy resources, taking into account different user roles in the smart grid, allowed for a fine-grained distinction of access rights for use cases and actors. As a concrete result of this work, a generic and open communication underlay for smart grid components was developed, providing a flexible and adaptable infrastructure and supporting future smart grid requirements and roll-out. A proof-of-concept validation of the remote controllable service concept based on this infrastructure has been conducted in appropriate laboratory environments to confirm the main benefits of this approach.
Highlights
In recent years, the electric power grid had to face enormous challenges on the way to a more environmentally friendly infrastructure, supporting decarbonisation and higher shares of renewables
Two software components on separate intelligent electronic devices (IEDs) communicating over secure transmission control protocol (TCP)/Internet protocol (IP): This extends the scope of scenarios b) and c) to include encryption and authentication
It could be demonstrated that the presented approach of an open
Summary
The electric power grid had to face enormous challenges on the way to a more environmentally friendly infrastructure, supporting decarbonisation and higher shares of renewables. For PV, the use of small roof-top generation sites is very common nowadays; they are feeding electricity into low voltage (LV) grids This causes severe stability problems for LV grids, as they are massively distributed, i.e., control applications are needed for the coordination of a large number of participating nodes using respective communication means [2]. The work at hand intends to contribute to an information and communication technology (ICT) infrastructure useful for smart grids, i.e., power grids with additional means to exchange, store, interpret, and edit data and to use it for control purposes [3].
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