scholarly journals Advanced energy management system with the incorporation of novel security features

2020 ◽  
Vol 10 (4) ◽  
pp. 3978
Author(s):  
Raheel Muzzammel ◽  
Rabia Arshad ◽  
Saba Mehmood ◽  
Danista Khan
Keyword(s):  
Power Systems ◽  
Energy Management ◽  
Management System ◽  
Nuclear Power ◽  
Industrial Development ◽  
Fossil Fuels ◽  
Electrical Power ◽  
Centralized Control ◽  
Renewable Energy Resources ◽  
Energy Theft

Nowadays, energy management is a subject of great importance and complexity. Pakistan, being in a state of developing country, generates electrical power mainly by using non-renewable sources of energy. Non-renewable entities are fossil fuels such as furnace oil, natural gas, coal, and nuclear power. Pakistan has been facing a severe shortage of production in energy sector for last two decades. This shortfall is affecting the industrial development as well as economic growth. With the growing population, the load demand is rapidly increasing and there must be a need to expand the existing ones or to build new power systems. In this paper, an autonomous management system has been proposed to enhance quality, reliability and confidence of utilization of energy between end consumers and suppliers. Such objectives can only be fulfilled by making the power supply secure for end consumers. Distributed and centralized control systems are involved for maintaining a balance between renewable energy resources and base power, so that end consumers demand can be fulfilled when required. A reliable Two-way communication system between suppliers and end consumers has been proposed by using Message Digest algorithm which ensures that there would be no energy theft. Simulations have been done in MATLAB/ Simulink environment and results have been presented to show the effectiveness of the proposed model.

NPP-Smart Grid Mutual Safety and Cyber Security Assurance

2022 ◽  
pp. 1047-1077
Author(s):  
Eugene Brezhniev ◽  
Oleg Ivanchenko
Keyword(s):  
Smart Grid ◽  
Power Systems ◽  
Cyber Security ◽  
Nuclear Power ◽  
Power Plants ◽  
Mutual Influence ◽  
Electrical Power ◽  
Security Assurance ◽  
Telecommunication Systems ◽  
Interconnected Power Systems

The smart grid (SG) is a movement to bring the electrical power grid up to date so it can meet current and future requirements to fit customer needs. Disturbances in SG operation can originate from natural disasters, failures, human factors, terrorism, and so on. Outages and faults will cause serious problems and failures in the interconnected power systems, propagating into critical infrastructures such as nuclear industries, telecommunication systems, etc. Nuclear power plants (NPP) are an intrinsic part of the future smart grid. Therefore, it is of high priority to consider SG safety, mutual influence between NPP and SG, forecast possible accidents and failures of this interaction, and consider the strategies to avoid them.

Earthquake Experience Data Point to Benefit of Diverse Backup Power

2014 ◽  
Author(s):  
David J. Calhoun ◽  
Mark A. Gake
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Electrical Power ◽  
Electrical Power Systems ◽  
Common Mode ◽  
Failure Risk ◽  
Diesel Generators ◽  
The Individual

Operating nuclear power plants typically have backup electrical power supplied by diesel generators. Although backup power systems are designed with redundant trains, each capable of supplying the power requirements for safe shutdown equipment, there is a common-mode seismic failure risk inherent in these customary backup power arrangements. In an earthquake, multiple equipment trains with similar, if not identical, components located side-by-side are exposed to inertial forces that are essentially identical. In addition, because of their similar subcomponent configurations, seismic fragilities are approximately equal. In that case, the probability of multiple backup power system failures during an earthquake is likely to be dependent on, and nearly the same as, the individual seismic failure probability of each equipment train. Post-earthquake inspections at conventional multiple unit power stations over the last 40 years identified this common-mode seismic failure risk long before the tsunami-related common-mode failures of diesel generators at Fukushima Daiichi in March 2011. Experience data from post-earthquake inspections also indicate that failure probabilities of diverse sets of power generation equipment are independent and inherently less susceptible to common-mode failures. This paper demonstrates that employing diverse backup power designs will deliver quantifiable improvements in electrical system availability following an earthquake. These improvements are illustrated from available literature of post-earthquake inspection reports, along with other firsthand observations. A case study of the seismic performance of similarly configured electrical power generation systems is compared to the performance of diverse sets of electrical power systems. Seismic probabilistic risk analyses for several system configurations are presented to show the benefit of improved post-earthquake availability that results from designing new backup power systems with greater diversity.

scholarly journals Multi-Stack Lifetime Improvement through Adapted Power Electronic Architecture in a Fuel Cell Hybrid System

Mathematics ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 739 ◽  
Author(s):  
Milad Bahrami ◽  
Jean-Philippe Martin ◽  
Gaël Maranzana ◽  
Serge Pierfederici ◽  
Mathieu Weber ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Management System ◽  
Control Method ◽  
Polymer Electrolyte Membrane ◽  
Electrical Power ◽  
Experimental Results ◽  
Hydrogen Energy ◽  
Renewable Energy Resources ◽  
Electrolyte Membrane ◽  
Cell Groups

To deal with the intermittency of renewable energy resources, hydrogen as an energy carrier is a good solution. The Polymer Electrolyte Membrane Fuel Cell (PEMFC) as a device that can directly convert hydrogen energy to electricity is an important part of this solution. However, durability and cost are two hurdles that must be overcome to enable the mass deployment of the technology. In this paper, a management system is proposed for the fuel cells that can cope with the durability issue by a suitable distribution of electrical power between cell groups. The proposed power electronics architecture is studied in this paper. A dynamical average model is developed for the proposed system. The validation of the model is verified by simulation and experimental results. Then, this model is used to prove the stability and robustness of the control method. Finally, the energy management system is assessed experimentally in three different conditions. The experimental results validate the effectiveness of the proposed topology for developing a management system with which the instability of cells can be confronted. The experimental results verify that the system can supply the load profile even during the degradation mode of one stack and while trying to cure it.

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