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In order to improve hardware utilization, a novel Protection & Control Architecture based on virtual devices in digital substation is proposed in this paper. An “all-in-one” monitoring and control device is developed to support new architecture. Based on a Cloud Computing platform, the protection and control functions are built as virtual devices. Based on virtual protection & control, the...
Attempts to secure the enterprise network, even when using strong AAA (authentication, authorization and accounting) schemes, meet the user box spoofing and security middle boxes (firewalls and other filtering tools) bypassing problems. Seeking to strengthen the network security level, the names (users, addresses) and user machines must be bound tightly to the unambiguously defined network appliances...
Nowadays, software-defined networking (SDN) has attracted a lot of interest. Therefore, many research works have introduced the new concepts and architecture to SDN-based network. However, most of existing research studies in wireless network area mainly introduce the theoretical concepts and face a difficulty to implement on the testbed. In addition, useful network applications with SDN controller...
Following the Northeast blackout of 2003, the Wide-Area Measurement Systems (WAMS) technology using Phasor Measurement Units (PMUs) has tremendously matured for the North American grid. However, with the rapidly increasing number of deployed PMUs, the design and deployment of an efficient wide-area communication and computing infrastructure remains one of the greatest challenges to harvest the gigantic...
The OpenFlow paradigm embraces third-party development efforts, and therefore suffers from potential attacks that usurp the excessive privileges of control plane applications (apps). Such privilege abuse could lead to various attacks impacting the entire administrative domain. In this paper, we present SDNShield, a permission control system that helps network administrators to express and enforce...
This paper presents a study about the timing behavior of software designed under the IEC 61499 standard. In particular, the effect of different event management strategies on the execution time of applications is analyzed. The study is focused on the closed loop control applications in which the controller algorithm is implemented according to the standard. In particular, the PID control algorithm...
The recent networking paradigm changes towards virtualization and the softwareisation of network functions, controls, applications are expected to improve cost efficiency, control accuracy, and deployment flexibility. However, the issue of reliability in softwareisation architecture becomes more complex and poses many critical challenges on the existing network reliability mechanisms in order to achieve...
The vulnerability of industrial control systems (ICS) to electronic intrusion and malware has recently been well documented in both the technical and popular press. Despite significant attention and much progress over the past 15 years, threats continue to evolve about as fast as preventive solutions. This paper reviews the root causes of ICS cybersecurity vulnerabilities, looks at some common defensive...
It is needed to restructure the static internetwork to more flexible networking environment. Today's infrastructure is not able to change according to fast changing requirements of the users. Due to this there is an introduction of Software Defined Networking (SDN) and OpenFlow (OF) architecture in the year 2005 to modify today's static environment to dynamic one. This concept helps to have programmability...
We present an integrated management architecture based on Software-Defined Infrastructure (SDI), an approach where an SDI Manager controls heterogeneous resources with a global view of the entire infrastructure. By exposing APIs on top of our SDI management system, we create a programmatic cloud environment where users can innovate, creating unique applications and services in a software-defined manner...
Using generalized building blocks for the design of power electronics converters is advantageous in terms of scalability, modularity, power density, and reliability. For the control of those power electronic converters composed of Power Electronics Building Blocks (PEBBs), an easily scalable and modular control system should also be integrated. In this paper, a hierarchical control system architecture...
Software Defined Networking (SDN) is considered one of the major driving factors to bring radical changes on Mobile Core Networks (MCN) design. There are many proposals on how to advocate SDN methodology, however, most of them stop at “vision” level without providing details about key performance contributors. In this paper, we tackle this gap and present a study of latency in SDN based MCN. We identify...
Modern electric distribution systems with emerging operation methods and advanced metering systems bring new challenges to the system analysis, control and management. Interdependency of cyber and physical layers and interoperability of various control and management strategies require wide and accurate test and analysis before field implementation. Real-time simulation is known as a precise and reliable...
The deployment of dense networks of Small Cells (SC) is one of the key components of 5G mobile networks and will pose several challenges to the backhaul network. Software-Defined Networking (SDN) is a key technique to cope with the increased management complexity of such heterogeneous deployments, helping in the task of achieving a system-wide network management, which includes the 5G mobile wireless...
Software Defined Networking (SDN) is the new promise towards an easily configured and centrally controlled network. Based on this centralized control, SDN technology has proved its positive impact in the world of network communications from different aspects. Consistency in SDN, as in any rule-based network, is an essential feature that every communication system should possess. In this paper, we...
The data managed in a software system is often controlled to behave dependently. Basically, dependent parts of the data can be controlled through their internal connections. However in a real-world system, dependencies among the data and its required behaviors are generally complex and designing its internal structure and control mechanism to satisfy all requirements becomes challenging. To cope with...
In order to address the performance problems that many business applications are experiencing, network vendors and Network Service Providers are reconsidering the integration of some form of application awareness in the way their networks forward user traffic. Their ultimate goal is to devise new network service models that are dedicated and customized to applications. This trend is mainly enabled...
Software Defined Networking (SDN) is new networking architecture with the centralized control mechanism. SDN has been proven successful in improving not only network performance but also network security. However, the centralized control in SDN architecture incurs new security vulnerability. In particular, the UDP flooding attack can be easily launched and causes serious packet transmission delay,...
Control plane distribution on Software Defined Networking enhances security, performance and scalability of the network. In this paper, we propose an efficient architecture for distribution of controllers. The main contributions of the proposed architecture are: i) A controller distributed areas to ensure security, performance and scalability of the network; ii) A single database maintained by a designated...
This paper proposes a formulation of a linear Model Predictive Control system based on two layers. The formulation takes into account a status value associated with each variable. At the lower layer, a basic Model Predictive Control module minimizes a constrained quadratic cost function for the computation of the future control moves. At the upper layer, an additional module, based on a Linear Programming...
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