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Publikationen

Zeitschriftenartikel | Konferenzbeiträge | Dissertationen | Technische Berichte

Zeitschriftenartikel

Tobias Lübkert, Marcus Venzke und Volker Turau. Impacts of Domestic Electric Water Heater Parameters on Demand Response. Computer Science - Research and Development, 32:49–64, 2017.
@Article{Telematik_Demand_Response_DEWH_2016, author = {Tobias Lübkert and Marcus Venzke and Volker Turau}, title = {Impacts of Domestic Electric Water Heater Parameters on Demand Response}, pages = {49-64}, journal = {Computer Science - Research and Development}, volume = {32}, year = 2017, }
Abstract: This paper analyzes the impact of the high dimen- sional parameter space of domestic electric water heaters (DEWH) for demand response (DR). To quantify the con- sumer comfort a novel metric is introduced considering a stochastic distribution of different water draw events. Incor- porating three control algorithms from literature, it is shown that all considered parameters of a DEWH except the heat conductivity have a significant impact on consumer satisfac- tion. The effect on DR is mainly influenced by the temper- ature range and the planning horizon, but also by the heat conductivity and the volume. In contrast, the rated power of the heating element and the nominal temperature have no significant impact on the effect on DR. The impacts are an- alyzed by varying these parameters in a simulation of 1000 DEWHs considering three different controllers: a common thermostat, an exchange price dependent nominal temper- ature changing mechanism and an energy scheduling algo- rithm proposed by Du and Lu.

Konferenzbeiträge

Tobias Lübkert, Marcus Venzke und Volker Turau. Impacts of Domestic Electric Water Heater Parameters on Demand Response. In Proceedings of the 5th D-A-CH+ Energy Informatics Conference 2016, September 2016. Klagenfurt, Austria.
@InProceedings{Telematik_D-A-CH_DemandResponse_2016, author = {Tobias Lübkert and Marcus Venzke and Volker Turau}, title = {Impacts of Domestic Electric Water Heater Parameters on Demand Response}, booktitle = {Proceedings of the 5th D-A-CH+ Energy Informatics Conference 2016}, pages = , day = {29-30}, month = sep, year = 2016, location = {Klagenfurt, Austria}, }
Abstract: This paper analyzes the impact of the high dimen- sional parameter space of domestic electric water heaters (DEWH) for demand response (DR). To quantify the con- sumer comfort a novel metric is introduced considering a stochastic distribution of different water draw events. Incor- porating three control algorithms from literature, it is shown that all considered parameters of a DEWH except the heat conductivity have a significant impact on consumer satisfac- tion. The effect on DR is mainly influenced by the temper- ature range and the planning horizon, but also by the heat conductivity and the volume. In contrast, the rated power of the heating element and the nominal temperature have no significant impact on the effect on DR. The impacts are an- alyzed by varying these parameters in a simulation of 1000 DEWHs considering three different controllers: a common thermostat, an exchange price dependent nominal temper- ature changing mechanism and an energy scheduling algo- rithm proposed by Du and Lu.
Marcus Venzke und Volker Turau. Simulative Evaluation of Demand Response Approaches for Waterbeds. In Proceedings of the 2016 IEEE International Energy Conference (ENERGYCON), April 2016. Leuven, Belgium.
@InProceedings{Telematik_EnergyCon_2016_SimulationDemandResponseWaterbed, author = {Marcus Venzke and Volker Turau}, title = {Simulative Evaluation of Demand Response Approaches for Waterbeds}, booktitle = {Proceedings of the 2016 IEEE International Energy Conference (ENERGYCON)}, pages = , day = {4-8}, month = apr, year = 2016, location = {Leuven, Belgium}, }
Abstract: This paper quantitatively compares five demand response (DR) approaches for waterbeds using simulation. The approaches enable privacy by design with a local control and contribute to the planning phase of the electricity network’s balancing process. Approaches are assessed by their energy consumption, their ability to shift power consumption to times of high availability, and the effort of realization and configuration. Load steps were identified as a risk for power network stability. A classification of DR methods, based on the position of their contribution within the electricity network’s balancing process, is used to distinguish our approach from the DR approaches found in the literature.
Marcus Venzke und Volker Turau. A demand response approach locally implementable for waterbeds. In Proceedings of 1st Workshop on Middleware for a Smarter Use of Electric Energy (MidSEE’15), März 2015, pp. 1–6. Cottbus, Germany.
@InProceedings{Telematik_VT_2015_DemandResponseWaterbed, author = {Marcus Venzke and Volker Turau}, title = {A demand response approach locally implementable for waterbeds}, booktitle = {Proceedings of 1st Workshop on Middleware for a Smarter Use of Electric Energy (MidSEE’15)}, pages = {1-6}, day = {12}, month = mar, year = 2015, location = {Cottbus, Germany}, }
Abstract: The paper presents a demand response scheme for waterbeds that can be implemented in practice today. It balances the requirements of saving energy and shifting power to times with higher power availability by planning heating phases to minimize costs according to a virtual electricity tariff derived from trading prices of an electricity exchange. The approach was successfully validated with a real waterbed under real conditions.
Maciej Muehleisen, Marcus Venzke, Christoph Petersen, Andreas Timm-Giel und Volker Turau. Reliable Transmission of Aircraft Data over Satellite. In Proceedings of the 5th International Workshop on Aircraft System Technologies (AST 2015), Februar 2015. Hamburg, Germany.
@InProceedings{Telematik_Ast_Workshop_2015, author = {Maciej Muehleisen and Marcus Venzke and Christoph Petersen and Andreas Timm-Giel and Volker Turau}, title = {Reliable Transmission of Aircraft Data over Satellite}, booktitle = {Proceedings of the 5th International Workshop on Aircraft System Technologies (AST 2015)}, month = feb, year = 2015, location = {Hamburg, Germany}, }
Abstract: After almost two years to recover the flight data recorder of Air France Flight 447 and, by January 2015, still no sign of Malaysian Airlines Flight 370, the public and media ask the question: "How is it possible to have almost worldwide Internet access in the cabin but not being able to track the position of an aircraft?" One answer to the question is that the passenger pays for Internet access in the cabin while the airline would have to pay for transmission of sensor data, such as the aircraft position. Furthermore Internet access in the cabin is offered on a best effort basis without any guarantees with regard to delay, throughput and loss rate. In this paper we present a simple system capable of transmitting critical data to the ground and evaluate the statistical distribution of the end-to-end delay a transmitted data packet encounters. Signal Flow Graphs are used to systematically model the transmission system with regard to delays encountered by a packet, including those caused by retransmissions of lost data. Results for the Inmarsat-4 Broadband Global Area Network (BGAN) service are derived, but the method is applicable to many other transmission systems.
Jürgen Jessen, Marcus Venzke und Volker Turau. Design Considerations for a Universal Smart Energy Module for Energy Harvesting in Wireless Sensor Networks. In Proceedings of the Ninth Workshop on Intelligent Solutions in Embedded Systems (WISES 2011), Juli 2011, pp. 35–40. Regensburg, Germany.
@InProceedings{Telematik_JVT_SmartSupply, author = {Jürgen Jessen and Marcus Venzke and Volker Turau}, title = {Design Considerations for a Universal Smart Energy Module for Energy Harvesting in Wireless Sensor Networks}, booktitle = {Proceedings of the Ninth Workshop on Intelligent Solutions in Embedded Systems (WISES 2011)}, pages = {35-40}, day = {07-08}, month = jul, year = 2011, location = {Regensburg, Germany}, }
Abstract: This paper presents the design of a universal energy module for nodes in wireless sensor networks. It supports a wide range of energy harvesters and energy storage systems. The focus is on the efficient conversion and storage of energy and to provide a smart platform for higher level energy management functions. The module provides maximum power point tracking and supports hybrid harvesters.
Marcus Venzke, Mikko Jania und Volker Turau. VoIP over WLAN: Replacing Professional Mobile Radio on Airports. In Proceedings of the Second International Workshop on Aircraft System Technologies (AST'09), März 2009. Hamburg, Germany.
@InProceedings{Telematik_VJT_2009_VoIP, author = {Marcus Venzke and Mikko Jania and Volker Turau}, title = {VoIP over WLAN: Replacing Professional Mobile Radio on Airports}, booktitle = {Proceedings of the Second International Workshop on Aircraft System Technologies (AST'09)}, day = {26-27}, month = mar, year = 2009, location = {Hamburg, Germany}, }
Abstract: This paper proposes and analyses the idea of replacing professional mobile radio for airport ground handlers by VoIP systems based on WLAN. The proposed communication scheme is adjusted to business processes at airports. It provides push-to-talk unicast and group messages (determined by business tasks or location) with priorities, encrypted transmission, and mailboxes. The resulting architecture and proof-of-concept prototype consists of a server and software clients reusing already installed hardware and WLAN infrastructure, and uses peer-to-peer RDP voice streams. Bandwidth considerations estimate a maximum of 72 concurrent streams per access point on WLAN for IEEE 802.11g (54 Mbit/s) and 13 streams for IEEE 802.11b (11 Mbit/s), enhanced with a factor 3 to 5 if IEEE 802.11e is used as quality of service support.
Arne Bosien, Marcus Venzke und Volker Turau. A rewritable RFID environment for AGV navigation. In Proceedings of the 5th International Workshop on Intelligent Transportation (WIT'08), März 2008, pp. 87–92. Hamburg, Germany.
@InProceedings{Telematik_BVT_2008_AVG_RFID_Environment, author = {Arne Bosien and Marcus Venzke and Volker Turau}, title = {A rewritable RFID environment for AGV navigation}, booktitle = {Proceedings of the 5th International Workshop on Intelligent Transportation (WIT'08)}, pages = {87-92}, day = {18-19}, month = mar, year = 2008, location = {Hamburg, Germany}, }
Abstract: The paper analyses potentials, challenges, and applications of using rewritable, stationary RFID tags for marking routes for autonomous vehicles in manufacturing environments. This approach promises to be flexible, robust, and inexpensive. Two algorithms are proposed also considering additional sensors.
Steffen Loth, Marcus Venzke, Dietmar Möller, Axel Husfeldt, Volker Turau und Christoph Meier. Car Management on Aprons (CARMA) - Developing Integrated Solutions for Vehicle Management at Mid-Size Airports. In Proceedings of the First International Workshop on Aircraft System Technologies (AST'07), März 2007, pp. 257–266. Hamburg, Germany.
@InProceedings{Telematik_LVMHTM_2007_CARMA, author = {Steffen Loth and Marcus Venzke and Dietmar Möller and Axel Husfeldt and Volker Turau and Christoph Meier}, title = {Car Management on Aprons (CARMA) - Developing Integrated Solutions for Vehicle Management at Mid-Size Airports}, booktitle = {Proceedings of the First International Workshop on Aircraft System Technologies (AST'07)}, pages = {257-266}, day = {29-30}, month = mar, year = 2007, location = {Hamburg, Germany}, }
Abstract: The paper investigates the development of systems for vehicle management on airport aprons, using current A-SMGCS experiences, with a focus on fleet management and turn around processes of mid-size airports. An architecture is proposed that is derived from A-SMGCS, reducing cost by only supporting cooperative targets and off-the-shelf hardware. Available candidate technologies for implementing the architecture_s components are discussed, pointing out criteria for selection. Systems for vehicle management on aprons are important, because the continuous reductions of aircraft turn-around times increase the pressure on airports and ground handling companies to optimize infrastructure and resources.
Volker Turau, Matthias Witt und Marcus Venzke. Field Trials with Wireless Sensor Networks: Issues and Remedies. In Proceedings of the Second International Conference on Wireless and Mobile Communications (ICWMC'06), Juli 2006, pp. 86. Bucharest, Romania.
@InProceedings{Telematik_TWV_2006_FieldTrialsWSN, author = {Volker Turau and Matthias Witt and Marcus Venzke}, title = {Field Trials with Wireless Sensor Networks: Issues and Remedies}, booktitle = {Proceedings of the Second International Conference on Wireless and Mobile Communications (ICWMC'06)}, pages = 86, day = {29-31}, month = jul, year = 2006, location = {Bucharest, Romania}, }
Abstract: Extensive field trials are essential to evaluate protocols and algorithms for wireless sensor networks. The high costs of such trials demand for a systematic approach. This paper discusses the issues of setting up a field trial such as packaging, logging, and deployment. Details about a concrete field trial to evaluate a topology discovery algorithm are presented.
Marcus Venzke, Peng Kong und Volker Turau. A Generic Java Interface for Vertical Integration of Wireless Sensor Networks. In Proceedings of the Fourth Workshop on Intelligent Solutions in Embedded Systems (WISES'06), Juni 2006. Vienna, Austria.
@InProceedings{Telematik_VKT_2006_VerticalIntegrationSensorNet, author = {Marcus Venzke and Peng Kong and Volker Turau}, title = {A Generic Java Interface for Vertical Integration of Wireless Sensor Networks}, booktitle = {Proceedings of the Fourth Workshop on Intelligent Solutions in Embedded Systems (WISES'06)}, day = {30}, month = jun, year = 2006, location = {Vienna, Austria}, }
Abstract: The paper presents a generic, high-level Java interface for the vertical integration of wireless sensor networks. The intuitive interfaces are implemented in a framework that is easy to use. The classes of the framework can be extended to meet the requirements of a wide range of applications. In particular, the framework supports sending packets to and receiving packets from nodes of the sensor network. Packet types are represented as Java classes generated from meta-data based on XML Schema. This approach fosters short development cycles and provides the productivity needed in vertical integration applications. The ScatterWeb platform is used as a sample platform for sensor networks.
Volker Turau, Christian Renner, Marcus Venzke, Sebastian Waschik, Christoph Weyer und Matthias Witt. The Heathland Experiment: Results And Experiences. In Proceedings of the Workshop on Real-World Wireless Sensor Networks (REALWSN'05), Juni 2005. Stockholm, Sweden.
@InProceedings{Telematik_TRVWWW_2005_Heathland, author = {Volker Turau and Christian Renner and Marcus Venzke and Sebastian Waschik and Christoph Weyer and Matthias Witt}, title = {The Heathland Experiment: Results And Experiences}, booktitle = {Proceedings of the Workshop on Real-World Wireless Sensor Networks (REALWSN'05)}, day = {20-21}, month = jun, year = 2005, location = {Stockholm, Sweden}, }
Abstract: This paper reports on the experience gained during a real-world deployment of a sensor network based on the ESB platform in the heathlands of Northern Germany. The goal of the experiment was to gain a deeper insight into the problems of real deployments as opposed to simulated networks. The focus of this report is on the quality of radio links and the influence of the link quality on multi-hop routing.
Volker Turau, Dietrich Fahrenholtz und Marcus Venzke. Online Assessment for University Admission: Goals, Problems, and Experience. In Proceedings of the 9th International Computer Assisted Assessment Conference (CAA'05), Juni 2005, pp. 457–467. Loughborough, UK.
@InProceedings{Telematik_TFV_2005_OnlineAssessment, author = {Volker Turau and Dietrich Fahrenholtz and Marcus Venzke}, title = {Online Assessment for University Admission: Goals, Problems, and Experience}, booktitle = {Proceedings of the 9th International Computer Assisted Assessment Conference (CAA'05)}, pages = {457-467}, day = {5-6}, month = jun, year = 2005, location = {Loughborough, UK}, }
Abstract: This paper reports on the experience gained during the implementation and operation of an online assessment system for recruitment of engineering and computer science students. We identified problems that have to be solved to make online assessment a worthwhile building block of university admission. The presented work includes techniques for evaluating and monitoring online assessment processes.
Marcus Venzke, Christoph Weyer und Volker Turau. Application Specific vs. Standard Web Service Interfaces for the Vertical Integration of Fieldbus Systems. In Proceedings of the Third Workshop on Intelligent Solutions in Embedded Systems (WISES'05), Mai 2005, pp. 153–162. Hamburg, Germany.
@InProceedings{Telematik_VWT_2005_WebService, author = {Marcus Venzke and Christoph Weyer and Volker Turau}, title = {Application Specific vs. Standard Web Service Interfaces for the Vertical Integration of Fieldbus Systems}, booktitle = {Proceedings of the Third Workshop on Intelligent Solutions in Embedded Systems (WISES'05)}, pages = {153-162}, day = {20}, month = may, year = 2005, location = {Hamburg, Germany}, }
Abstract: The paper compares two approaches for developing Web service interfaces for the vertical integration of TTP/A fieldbus systems. High-level abstractions are provided by application specific interfaces, generated from metadata describing fieldbus systems. In contrast standardised interfaces such as OPC XML DA only allow lower levels of abstractions. But these enable accessing the fieldbus system from a broad range of standard clients, while high-level abstractions reflecting the application programmer's view on the system facilitate the development of more specific clients and workflows.
Marcus Venzke. Specifications using XQuery Expressions on Traces. In Proceedings of the First International Workshop on Web Services and Formal Methods (WS-FM'04), Dezember 2004. Pisa, Italy. Published in: Electronic Notes in Theoretical Computer Science, Volume 105, p. 109-118, 10 December 2004.
@InProceedings{Telematik_Venzke_2004_Specifications, author = {Marcus Venzke}, editor = {Mario Bravetti and Gianluigi Zavattaro}, title = {Specifications using XQuery Expressions on Traces}, booktitle = {Proceedings of the First International Workshop on Web Services and Formal Methods (WS-FM'04)}, month = dec, year = 2004, location = {Pisa, Italy}, note = {Published in: Electronic Notes in Theoretical Computer Science, Volume 105, p. 109-118, 10 December 2004}, }
Abstract: This paper contributes to the interoperability of web services by proposing the flexible specification technique SXQT in conjunction with the automatic validation, a straightforward approach for detecting non-conformance. SXQT allows different levels of abstraction by specifying individual requirements on a web service's protocol, i.e. its SOAP messages and behaviour including SOAP modules. The automatic validation detects non-conformance by comparing occurring message sequences with the protocol's specification.
Volker Turau, Marcus Venzke, Christoph Weyer und Yesenia Vigil. Vertical Integration of TTP/A Fielbus Systems Using Web Services. In Proceedings of the First International Conference on Informatics in Control, Automation and Robotics (ICINCO'04), August 2004, pp. 390–393. Setubal, Portugal.
@InProceedings{Telematik_TVW_2004_VerticalIntegration, author = {Volker Turau and Marcus Venzke and Christoph Weyer and Yesenia Vigil}, title = {Vertical Integration of TTP/A Fielbus Systems Using Web Services}, booktitle = {Proceedings of the First International Conference on Informatics in Control, Automation and Robotics (ICINCO'04)}, pages = {390-393}, month = aug, year = 2004, location = {Setubal, Portugal}, }
Abstract: This paper presents a generic technique to expose data and control of fieldbus systems to applications located at the level of operational management. To provide a high degree of interoperability between the operational level and different fieldbus systems we utilize standardized techniques such as XML, HTTP, and Web services which can be deployed independently of the platform. The proposed service is based on the interface file system for TTP/A smart transducers. The defined interface provides high level abstractions appropriate for the integration into business applications and considers the latency introduced by the internet protocols.
Volker Turau, Marcus Venzke und Christoph Weyer. A Web Service for TTP/A Fieldbus Systems based on Meta-Data. In Proceedings of the Second Workshop on Intelligent Solutions in Embedded Systems (WISES'04), Juni 2004, pp. 159–168. Graz, Austria.
@InProceedings{Telematik_TVW_2004_MetaData, author = {Volker Turau and Marcus Venzke and Christoph Weyer}, title = {A Web Service for TTP/A Fieldbus Systems based on Meta-Data}, booktitle = {Proceedings of the Second Workshop on Intelligent Solutions in Embedded Systems (WISES'04)}, pages = {159-168}, month = jun, year = 2004, location = {Graz, Austria}, }
Abstract: This paper is concerned with the vertical integration of fieldbus systems. It presents a generic technique to expose data and control of fieldbus systems in a semantically rich way to applications located at the level of operational management. To provide a high degree of interoperability between the operational level and different fieldbus systems we utilize standardized techniques such as XML, HTTP, and Web services which can be deployed independently of the platform. The proposed service is based on the interface file system for TTP/A smart transducers. The defined interface provides high level abstractions appropriate for the integration into business applications and considers the latency introduced by the internet protocols. The operations of the service are automatically generated from meta-data descriptions of the smart transducers and their combination into larger clusters.
Marcus Venzke. Automatic Validation of Web Services. In Proceedings of the 8th CaberNet Radicals Workshop, Oktober 2003. Ajaccio, Corsica.
@InProceedings{Telematik_Venzke_2003_Validation, author = {Marcus Venzke}, editor = {Witold Abramowicz}, title = {Automatic Validation of Web Services}, booktitle = {Proceedings of the 8th CaberNet Radicals Workshop}, day = {5-8}, month = oct, year = 2003, location = {Ajaccio, Corsica}, }
Marcus Venzke und Stefan Pitzek. Accessing Fieldbus Systems via Web Services. In Proceedings of the First Workshop on Intelligent Solutions in Embedded Systems (WISES'03), Juni 2003. Vienna, Austria.
@InProceedings{Telematik_VP_2003_WebServices, author = {Marcus Venzke and Stefan Pitzek}, title = {Accessing Fieldbus Systems via Web Services}, booktitle = {Proceedings of the First Workshop on Intelligent Solutions in Embedded Systems (WISES'03)}, day = {27}, month = jun, year = 2003, location = {Vienna, Austria}, }

Dissertationen

Marcus Venzke. Spezifikation von interoperablen Webservices mit XQuery. PhD Thesis, Hamburg University of Technology, Hamburg, Germany, Dezember 2003.
@PhdThesis{Telematik_Venzke_2003_Spezifikation, author = {Marcus Venzke}, title = {Spezifikation von interoperablen Webservices mit XQuery}, school = {Hamburg University of Technology}, address = {Hamburg, Germany}, month = dec, year = 2003, }
Abstract: The thesis solves interoperability issues regarding Web Services. The W3C standard for the specification of their interfaces (WSDL) is made more precise. This is done by developing a specification technique (SXQT), that allows specifying interfaces using expressions of first order logic (in XQuery). Compliance with such specifications is checked with the automatic validation.

Technische Berichte

Jürgen Jessen, Marcus Venzke und Volker Turau. Smart Energy Module for Wireless Sensor Nodes. In Proceedings of the 9th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze" (FGSN'10), September 2010, pp. 9–12. Würzburg, Germany.
@InProceedings{Telematik_JVT_SmartEnergyModule, author = {Jürgen Jessen and Marcus Venzke and Volker Turau}, title = {Smart Energy Module for Wireless Sensor Nodes}, booktitle = {Proceedings of the 9th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze" (FGSN'10)}, pages = {9-12}, day = {16-17}, month = sep, year = 2010, location = {Würzburg, Germany}, }
Abstract: This paper presents the design of a universal energy module for wireless sensor nodes, which supports a wide range of energy harvesters and energy storages. The focus is on the efficient conversion and storage of energy and to provide hardware support for higher level management functions. The module facilitates maximum power point tracking to improve the harvester efficiency. By supporting hybrid harvesters, the module can make better use of the time-dependent availability of environmental energy sources.
Lars Niemann, Marcus Venzke, Christian Renner und Volker Turau. Clock Synchronization of TinyOS-based Sensor Networks with DCF77. In Proceedings of the 8th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze" (FGSN'09), August 2009, pp. 45–46. Hamburg, Germany.
@InProceedings{Telematik_NVRT_2009_DCF77, author = {Lars Niemann and Marcus Venzke and Christian Renner and Volker Turau}, title = {Clock Synchronization of TinyOS-based Sensor Networks with DCF77}, booktitle = {Proceedings of the 8th GI/ITG KuVS Fachgespräch "Drahtlose Sensornetze" (FGSN'09)}, pages = {45-46}, day = {13-14}, month = aug, year = 2009, location = {Hamburg, Germany}, }
Abstract: The paper presents an approach of applying DCF77 time radio signals to provide a clock with global time in sensor networks based on TinyOS. Some nodes containing DCF77 receiver hardware reliably decode time signals even if these are distorted to some extent. The clock with global time is provided by compensating clock drift. Time is distributed in the network with a protocol generating timestamps on the MAC layer.