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In industrial production facilities, technical Energy Management Systems are used to measure, monitor and display energy consumption related information. The measurements take place at the field device level of the automation pyramid. The measured values are recorded and processed at the control level. The functionalities to monitor and display energy data are located at the MES level of the automation pyramid. So the energy data from all PLCs has to be aggregated, structured and provided for higher level systems. This contribution introduces a concept for an Energy Data Aggregation Layer, which provides the functionality described above. For the implementation of this Energy Data Aggregation Layer, a combination of AutomationML and OPC UA is used.
Unverständliche Texte sind ein täglicher Alptraum vieler Millionen Erwachsener in deutschsprachigen Ländern. Ob Behördenbrief, Beipackzettel oder Betriebsanleitung: Man mag das Kauderwelsch nicht lesen. Dabei ist es gar nicht so kompliziert, diesen Ärger aus der Welt zu schaffen. Dieses Buch berichtet von Hintergründen und zeigt, wie man es macht.
Einfluss von Industrie 4.0 auf die Anwendbarkeit von Lastmanagement in der industriellen Produktion
(2018)
Technische Energiemanagementsysteme (kurz und im Folgenden tEnMS) in der produzierenden Industrie dienen heute meinst dem Messen, Speichern und Auswerten von Energieverbrauchsdaten. Allerdings besteht auch die Möglichkeit der Vorhersage und aktiven Einflussnahme auf die Energieaufnahme von Produktionsumgebungen durch das tEnMS. Derartige Funktionen werden als Prognose- und Lastmanagementfunktionen bezeichnet. Industrielle Produktionsumgebungen erfahren im Rahmen von Industrie 4.0 einen Wandel. Dieser Beitrag soll aufzeigen, wie tEnMS durch den beschriebenen Wandel beeinflusst werden und welche Chancen sich daraus für zukünftige tEnMS ergeben.
The growing importance of renewable generation connected to distribution grids requires an increased coordination between transmission system operators (TSOs) and distribution system operators (DSOs) for reactive power management. This work proposes a practical and effective interaction method based on sequential optimizations to evaluate the reactive flexibility potential of distribution networks and to dispatch them along with traditional synchronous generators, keeping to a minimum the information exchange. A modular optimal power flow (OPF) tool featuring multi-objective optimization is developed for this purpose. The proposed method is evaluated for a model of a real German 110 kV grid with 1.6 GW of installed wind power capacity and a reduced order model of the surrounding transmission system. Simulations show the benefit of involving wind farms in reactive power support reducing losses both at distribution and transmission level. Different types of setpoints are investigated, showing the feasibility for the DSO to fulfill also individual voltage and reactive power targets over multiple connection points. Finally, some suggestions are presented to achieve a fair coordination, combining both TSO and DSO requirements.
The transfer of historically grown monolithic software architectures into modern service-oriented architectures creates a lot of loose coupling points. This can lead to an unforeseen system behavior and can significantly impede those continuous modernization processes, since it is not clear where bottlenecks in a system arise. It is therefore necessary to monitor such modernization processes with an adaptive monitoring concept to be able to correctly record and interpret unpredictable system dynamics. This contribution presents a generic QoS measurement framework for service-based systems. The framework consists of an XML-based specification for the measurement to be performed – the Information Model (IM) – and the QoS System, which provides an execution platform for the IM. The framework will be applied to a standard business process of the German insurance industry, and the concepts of the IM and their mapping to artifacts of the QoS System will be presented. Furtherm ore, design and implementation of the QoS System’s parser and generator module and the generated artifacts are explained in detail, e.g., event model, agents, measurement module and analyzer module.
Cloud computing has become well established in private and public sector projects over the past few years, opening ever new opportunities for research and development, but also for education. One of these opportunities presents itself in the form of dynamically deployable, virtual lab environments, granting educational institutions increased flexibility with the allocation of their computing resources. These fully sandboxed labs provide students with their own, internal network and full access to all machines within, granting them the flexibility necessary to gather hands-on experience with building heterogeneous microservice architectures. The eduDScloud provides a private cloud infrastructure to which labs like the microservice lab outlined in this paper can be flexibly deployed at a moment’s notice.
In the context of modern mobility, topics such as smart-cities, Car2Car-Communication, extensive vehicle sensor-data, e-mobility and charging point management systems have to be considered. These topics of modern mobility often have in common that they are characterized by complex and extensive data situations. Vehicle position data, sensor data or vehicle communication data must be preprocessed, aggregated and analyzed. In many cases, the data is interdependent. For example, the vehicle position data of electric vehicles and surrounding charging points have a dependence on one another and characterize a competition situation between the vehicles. In the case of Car2Car-Communication, the positions of the vehicles must also be viewed in relation to each other. The data are dependent on each other and will influence the ability to establish a communication. This dependency can provoke very complex and large data situations, which can no longer be treated efficiently. With this work, a model is presented in order to be able to map such typical data situations with a strong dependency of the data among each other. Microservices can help reduce complexity.
Portable-micro-Combined-Heat-and-Power-units are a gateway technology bridging conventional vehicles and Battery Electric Vehicles (BEV). Being a new technology, new software has to be created that can be easily adapted to changing requirements. We propose and evaluate three different architectures based on three architectural paradigms. Using a scenario-based evaluation, we conclude that a Service-Oriented Architecture (SOA) using microservices provides a higher quality solution than a layered or Event-Driven Complex-Event-Processing (ED-CEP) approach. Future work will include implementation and simulation-driven evaluation.
The transfer of historically grown monolithic software architectures into modern service-oriented architectures creates a lot of loose coupling points. This can lead to an unforeseen system behavior and can significantly impede those continuous modernization processes, since it is not clear where bottlenecks in a system arise. It is therefore necessary to monitor such modernization processes with an adaptive monitoring concept in order to be able to correctly record and interpret unpredictable system dynamics. For this purpose, a general measurement methodology and a specific implementation concept are presented in this work.
Studien zeigen, dass Anhänger der PEGIDA-Bewegung die Medienberichterstattung als unangemessen wahrnehmen und ihr misstrauen. Diese Wahrnehmung und daraus resultierende kognitive, affektive und konative Konsequenzen wurden in einer standardisierten Online-Befragung untersucht (n= 800). Es zeigt sich, dass Anhänger der PEGIDA-Bewegung der Berichterstattung über PEGIDA mehr misstrauen als PEGIDA-Gegner. Diese Wahrnehmung wiederum hat politisch relevante Konsequenzen: Je stärker PEGIDA-Anhänger und neutral Eingestellte der Berichterstattung misstrauen, desto weniger Vertrauen bringen sie den Medien allgemein entgegen, desto unzufriedener sind sie mit der Demokratie in Deutschland und desto wütender sind sie auf die Berichterstattung. Die wütenden Reaktionen korrelieren mit einer Zustimmung zu radikalen Protestformen, was wiederum die Beteiligung an den Protestmärschen erhöht. Somit zeigen die Befunde, dass das Misstrauen in die Berichterstattung über PEGIDA auch über deren Anhängerkreis hinaus eng verbunden ist mit erodierendem Vertrauen in Medien und Politik sowie mit der Bereitschaft zu radikalen Protestformen.