Sub-project 2: Installations and utilities
Starting point and aim of research
The total energy demand of a production site is a superposition of single consumers, mainly machines and utilities on site. Depending on the operational state of these facilities their energy consumption varies and load peaks can be observed due to start-up or warm-up processes and switches between operational states. Stochastic interference of single consumers may lead to unintended peak loads in the production plant as a whole. Peak loads must be met by the energy provider and result in higher costs for the consumer.
The objective of sub-project 2 is to technically enable production facilities to manage their energy consumption and prevent load peaks without constraints on functionality and availability. As an example, strategies for consumption control are developed for a specific machine tool and selected components of building facilities. On the one hand these strategies include the control of single energy consuming units within the facilities and on the other hand they include the utilization of short-term energy storages. The results are implemented prototypically.
Approach and methodology
To increase the energy flexibility of production facilities several work steps are planned. First an extensive data acquisition of reference systems leads to a better orientation and more knowledge about the entire system. Possible actions of flexibility are identified systematically with the help of the measured data. Once the degree of flexibility has been determined, the energy demand is distributed over the time through an intelligent load management. The goal is to reduce peak loads without limitation of availability and process safety of the machinery and equipment.
Where a flexible control without any limitations is not possible, the essential requirements of the machinery and equipment are documented. With the help of this documentation optimization strategies are developed. In the case of peak loads, which could not be eliminated by an intelligent load management, new concepts should be found. These concepts are developed at the facility level as well as at the higher system level. After identifying the possibilities for flexible energy consumption, the options are specified in a command portfolio and provided to a higher-level control system. By defining applicable communication interfaces between the machinery and the control system a higher-level control will be enabled
Technische Hochschule Nürnberg Georg Simon Ohm
ieg - Institut für Energie und Gebäude
Tel.: +49 (0)911 5880-1830
Fax: +49 (0)911 5880-5846
Institut für Werkzeugmaschinen und Betriebswissenschaften (iwb)
Technische Universität München
Tel.: +49 (0)89 289-15588
Fax: +49 (0)89 289-15555