scholarly journals Demand Control Management in Microgrids: The Impact of Different Policies and Communication Network Topologies

2018 ◽  
Vol 12 (4) ◽  
pp. 3577-3584 ◽  
Author(s):  
Florian Kuhnlenz ◽  
Pedro H. J. Nardelli ◽  
Hirley Alves
Keyword(s):  
Communication Network ◽  
Network Topologies ◽  
The Impact ◽  
Demand Control ◽  
Control Management

scholarly journals ITANS: Incremental Task and Network Scheduling for Time-Sensitive Networks

2021 ◽  
Author(s):  
Anna Arestova ◽  
Wojciech Baron
Keyword(s):  
Communication Network ◽  
Rapid Development ◽  
Critical Systems ◽  
Periodic Tasks ◽  
Automated Driving ◽  
Data Dependencies ◽  
Information And Communication ◽  
Network Topologies ◽  
Time Systems ◽  
The Impact

The rapid development in information and communication technology confronts designers of real-time systems with new challenges that have arisen due to the increasing amount of data and an intensified interconnection of functions. This is e.g. driven by recent trends such as automated driving in the automotive field and digitization in factory automation. For distributed safety-critical systems, this progression has the impact that the complexity of scheduling tasks with precedence constraints organized in so-called task chains increases the more data has to be exchanged between tasks and the more functions are involved. Especially when data has to be transmitted over an Ethernet-based communication network, the coordination between the processing tasks running on different end-devices and the communication network has to be ensured to meet strict end-to-end deadlines of task chains. In this work, we present a heuristic approach that computes schedules for distributed and data-dependent task chains consisting of preemptive and periodic tasks, taking into account the network communication delays of time-sensitive networks. Our algorithm is able to solve large problems for synthetic network topologies with randomized data dependencies in a few seconds. A high success rate was achieved, which can also be further enhanced by relaxing the deadline conditions.

scholarly journals ITANS: Incremental Task and Network Scheduling for Time-Sensitive Networks

2021 ◽  
Author(s):  
Anna Arestova ◽  
Wojciech Baron
Keyword(s):  
Communication Network ◽  
Rapid Development ◽  
Critical Systems ◽  
Periodic Tasks ◽  
Automated Driving ◽  
Data Dependencies ◽  
Information And Communication ◽  
Network Topologies ◽  
Time Systems ◽  
The Impact

The rapid development in information and communication technology confronts designers of real-time systems with new challenges that have arisen due to the increasing amount of data and an intensified interconnection of functions. This is e.g. driven by recent trends such as automated driving in the automotive field and digitization in factory automation. For distributed safety-critical systems, this progression has the impact that the complexity of scheduling tasks with precedence constraints organized in so-called task chains increases the more data has to be exchanged between tasks and the more functions are involved. Especially when data has to be transmitted over an Ethernet-based communication network, the coordination between the processing tasks running on different end-devices and the communication network has to be ensured to meet strict end-to-end deadlines of task chains. In this work, we present a heuristic approach that computes schedules for distributed and data-dependent task chains consisting of preemptive and periodic tasks, taking into account the network communication delays of time-sensitive networks. Our algorithm is able to solve large problems for synthetic network topologies with randomized data dependencies in a few seconds. A high success rate was achieved, which can also be further enhanced by relaxing the deadline conditions.

A Diffusion Model for Communication Standards in Supply Networks

2008 ◽  
pp. 504-520
Author(s):  
Tim Stockheim ◽  
Michael Schwind ◽  
Kilian Weiss
Keyword(s):  
Communication Network ◽  
Market Power ◽  
Real World ◽  
Value Chain ◽  
Potential Cost ◽  
Supply Networks ◽  
Local Communication ◽  
Implementation Costs ◽  
Network Topologies ◽  
The Impact

This article presents a simulation framework that analyzes the diffusion of communication standards in different supply networks. We show that agents’ decisions depend on potential cost reduction, pressure from members of their communication network, and implementation costs of their communication standards. Besides focusing on process-specific market power distributions, the impact of relationship stability and process connectivity is analyzed as determinants of the diffusion of communication standards within different supply network topologies. In this context, two real-world scenarios from the automotive and paper/publishing industries are used as examples for different network topologies. The results support the thesis that increasing relationship dynamics and process connectivity lead to decreasing competition of communication standards. In certain circumstances, local communication clusters appear along the value chain, enabling these clusters to preserve their globally inferior standardization decision.

A Diffusion Model for Communication Standards in Supply Networks

2011 ◽  
pp. 105-121
Author(s):  
Michael Schwind ◽  
Tim Stockheim ◽  
Kilian Weiss
Keyword(s):  
Communication Network ◽  
Market Power ◽  
Real World ◽  
Value Chain ◽  
Potential Cost ◽  
Supply Networks ◽  
Local Communication ◽  
Implementation Costs ◽  
Network Topologies ◽  
The Impact

This chapter presents a simulation framework that analyzes the diffusion of communication standards in different supply networks. We show that agents’ decisions depend on potential cost reduction, pressure from members of their communication network, and implementation costs of their communication standards. Besides focusing on process-specific market power distributions, the impact of relationship stability and process connectivity are analyzed as determinants of the diffusion of communication standards within different supply network topologies. In this context, two real-world scenarios, from the automotive and paper and publishing industries, are used as examples for different network topologies. The results support the thesis that increasing relationship dynamics and process connectivity lead to decreasing competition of communication standards. In certain circumstances, local communication clusters appear along the value chain, enabling these clusters to preserve their globally inferior standardization decision.

scholarly journals Detailed visualization of communication network topologies

2017 ◽  
Vol 50 (1) ◽  
pp. 1199-1204 ◽  
Author(s):  
Holger Zipper ◽  
Christian Diedrich
Keyword(s):  
Communication Network ◽  
Network Topologies

scholarly journals Utjecaj podizanja trajnih naselja i uzgoja žitarica na razvoj putnih komunikacija / The impact of permanent settlements and grain cultivation on the development of road communications

2017 ◽  
pp. 32-42
Author(s):  
Dženan Brigić
Keyword(s):  
Communication Network ◽  
Roman Period ◽  
Direct Impact ◽  
Neolithic Period ◽  
Community Members ◽  
Communication Development ◽  
The Road ◽  
Long Time ◽  
On The Road ◽  
The Impact

The transformation of hunter-gatherer society, who lived as nomads for a  very long time, largely influenced the development of road communication. These communities now established permanent settlements, especially in arable lands, and had a somewhat lifestyle than before. The cultivation of grains  and domestication of animals meant that people had no more need for migration and the search for better locations, instead they started setting up their  homes in the proximity to other community members, thereby forming the  first Neolithic settlements. By forming the settlements appeared the need to  establish a communication with other communities in the territory of present-day Balkans and wider, usually for the purpose of trade of certain goods,  which had a direct impact on the road communication development that laid  foundations for the development of the roads in the Roman period. Several  such settlements are known in the territory of present-day Bosnia that maintained continuity and tradition as well as road communications from the  Neolithic period up to the Roman period, i.e. Roman governor Publius Cornelius Dolabella, under whose governorship the widest road communication  network was built in the territory of the province of Dalmatia.     

scholarly journals Synchrony in networks of Franklin bells

2019 ◽  
Vol 84 (5) ◽  
pp. 1001-1021 ◽  
Author(s):  
Mustafa Şayli ◽  
Yi Ming Lai ◽  
Rüdiger Thul ◽  
Stephen Coombes
Keyword(s):  
Linear Stability ◽  
Benjamin Franklin ◽  
Stability Function ◽  
Impact Oscillators ◽  
Network Topologies ◽  
Network States ◽  
Low Dimensional ◽  
Oscillatory Network ◽  
The Impact ◽  
Theoretical Results

Abstract The Franklin bell is an electro-mechanical oscillator that can generate a repeating chime in the presence of an electric field. Benjamin Franklin famously used it as a lightning detector. The chime arises from the impact of a metal ball on a metal bell. Thus, a network of Franklin bells can be regarded as a network of impact oscillators. Although the number of techniques for analysing impacting systems has grown in recent years, this has typically focused on low-dimensional systems and relatively little attention has been paid to networks. Here we redress this balance with a focus on synchronous oscillatory network states. We first study a single Franklin bell, showing how to construct periodic orbits and how to determine their linear stability and bifurcation. To cope with the non-smooth nature of the impacts we use saltation operators to develop the correct Floquet theory. We further introduce a new smoothing technique that circumvents the need for saltation and that recovers the saltation operators in some appropriate limit. We then consider the dynamics of a network of Franklin bells, showing how the master stability function approach can be adapted to treat the linear stability of the synchronous state for arbitrary network topologies. We use this to determine conditions for network induced instabilities. Direct numerical simulations are shown to be in excellent agreement with theoretical results.

scholarly journals FDIPP: False Data Injection Prevention Protocol for Smart Grid Distribution Systems

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 679 ◽  
Author(s):  
Hosam Hittini ◽  
Atef Abdrabou ◽  
Liren Zhang
Keyword(s):  
Communication Network ◽  
Smart Grid ◽  
Distribution System ◽  
Network Architecture ◽  
Distribution Systems ◽  
Network Performance ◽  
Vast Number ◽  
False Data Injection ◽  
Prevention Protocol ◽  
The Impact

In this paper, a false data injection prevention protocol (FDIPP) for smart grid distribution systems is proposed. The protocol is designed to work over a novel hierarchical communication network architecture that matches the distribution system hierarchy and its vast number of entities. The proposed protocol guarantees both system and data integrity via preventing packet injection, duplication, alteration, and rogue node access. Therefore, it prevents service disruption or damaging power network assets due to drawing the wrong conclusions about the current operating status of the power grid. Moreover, the impact of the FDIPP protocol on communication network performance is studied using intensive computer simulations. The simulation study shows that the proposed communication architecture is scalable and meets the packet delay requirements of inter-substation communication as mandated by IEC 61850-90-1 with a minimal packet loss while the security overhead of FDIPP is taken into account.

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