High level requirements of fast simulation and modelling suite of tools for future "self-healing" distribution power system

2005 ◽  
Author(s):  
A. Valenti ◽  
I. Bel ◽  
S. Lee
Keyword(s):  
Power System ◽  
Self Healing ◽  
Fast Simulation ◽  
Simulation And Modelling ◽  
Future Self ◽  
High Level

A Two Phases Self-healing Framework for Service-oriented Systems

2021 ◽  
Vol 15 (2) ◽  
pp. 1-25
Author(s):  
Amal Alhosban ◽  
Zaki Malik ◽  
Khayyam Hashmi ◽  
Brahim Medjahed ◽  
Hassan Al-Ababneh
Keyword(s):  
Web Services ◽  
A Priori ◽  
Fault Management ◽  
Service Selection ◽  
Exception Handling ◽  
Self Healing ◽  
Service Oriented Architectures ◽  
Service Oriented ◽  
Improved Performance ◽  
High Level

Service-Oriented Architectures (SOA) enable the automatic creation of business applications from independently developed and deployed Web services. As Web services are inherently a priori unknown, how to deliver reliable Web services compositions is a significant and challenging problem. Services involved in an SOA often do not operate under a single processing environment and need to communicate using different protocols over a network. Under such conditions, designing a fault management system that is both efficient and extensible is a challenging task. In this article, we propose SFSS, a self-healing framework for SOA fault management. SFSS is predicting, identifying, and solving faults in SOAs. In SFSS, we identified a set of high-level exception handling strategies based on the QoS performances of different component services and the preferences articled by the service consumers. Multiple recovery plans are generated and evaluated according to the performance of the selected component services, and then we execute the best recovery plan. We assess the overall user dependence (i.e., the service is independent of other services) using the generated plan and the available invocation information of the component services. Due to the experiment results, the given technique enhances the service selection quality by choosing the services that have the highest score and betters the overall system performance. The experiment results indicate the applicability of SFSS and show improved performance in comparison to similar approaches.

scholarly journals Cyber Security for Smart Grid, Cryptography, and Privacy

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Swapna Iyer
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Cyber Security ◽  
Key Management ◽  
Different Types ◽  
Management Techniques ◽  
Security Concerns ◽  
High Level ◽  
Efficiency And Reliability ◽  
Security Concern

The invention of “smart grid” promises to improve the efficiency and reliability of the power system. As smart grid is turning out to be one of the most promising technologies, its security concerns are becoming more crucial. The grid is susceptible to different types of attacks. This paper will focus on these threats and risks especially relating to cyber security. Cyber security is a vital topic, since the smart grid uses high level of computation like the IT. We will also see cryptography and key management techniques that are required to overcome these attacks. Privacy of consumers is another important security concern that this paper will deal with.

Fast Simulation of Power System Mid-Term Dynamics

1995 ◽  
Vol 28 (10) ◽  
pp. 477-482
Author(s):  
N.A. Fountas ◽  
N.D. Hatziargyriou
Keyword(s):  
Power System ◽  
Fast Simulation

scholarly journals Analysis of Accidents in 6-110 KV Electric Networks of Kuzbass Power System

2018 ◽  
Vol 41 ◽  
pp. 03015
Author(s):  
Sergei Zakharov ◽  
Dmitriy Kudryashov ◽  
Viktor Brodt ◽  
Ivan Pascar ◽  
Vyacheslav Voronin
Keyword(s):  
Power System ◽  
Normal Operation ◽  
Electrical Network ◽  
Electric Networks ◽  
Accident Rate ◽  
Electrical Grid ◽  
Grid Networks ◽  
Hazardous Production ◽  
High Level ◽  
Production Facilities

Power system of the Kemerovo region is unique in terms of the number of hazardous production facilities (coal mines, coal pit). To ensure trouble-free operation of hazardous production facilities and the normal operation of other consumers, it is necessary to ensure reliable operation of regional electrical grid networks. Based on reports on technological disruptions in electric networks of the Kemerovo region in 2015, performed analysis of accidents in 6-110 kV electric networks of Kuzbass power system. The statistics of the technological disruptions in terms of voltage classes, damaged elements, causes of occurrence, time to recovery and the number of outages of household consumer, are given. Conclusions were drawn about the high level of accident rate in 6-10 kV electrical network.

Modeling Operational Robustness and Resiliency with High-Level Petri Nets

2011 ◽  
Vol 1 (2) ◽  
pp. 17-38 ◽  
Author(s):  
Madjid Tavana ◽  
Timothy E. Busch ◽  
Eleanor L. Davis
Keyword(s):  
Petri Nets ◽  
Workflow Management ◽  
The United States ◽  
Self Healing ◽  
Military Operations ◽  
Tight Coupling ◽  
Modeling Framework ◽  
Workflow Systems ◽  
Wide Range ◽  
High Level

Military operations are highly complex workflow systems that require careful planning and execution. The interactive complexity and tight coupling between people and technological systems has been increasing in military operations, which leads to both improved efficiency and a greater vulnerability to mission accomplishment due to attack or system failure. Although the ability to resist and recover from failure is important to many systems and processes, the robustness and resiliency of workflow management systems has received little attention in literature. The authors propose a novel workflow modeling framework using high-level Petri nets (PNs). The proposed framework is capable of both modeling structure and providing a wide range of qualitative and quantitative analysis. The concepts of self-protecting and self-healing systems are captured by the robustness and resiliency measures proposed in this study. The proposed measures are plotted in a Cartesian coordinate system; a classification scheme with four quadrants (i.e., possession, preservation, restoration, and devastation) is proposed to show the state of the system in terms of robustness and resiliency. The authors introduce an overall sustainability index for the system based on the theory of displaced ideals. The application of the methodology in the evaluation of an air tasking order generation system at the United States Air Force is demonstrated.

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