scholarly journals The Opening Capability for Security against Privacy Infringements in the Smart Grid Environment

Mathematics ◽  
2018 ◽  
Vol 6 (10) ◽  
pp. 202 ◽  
Author(s):  
Sungwook Eom ◽  
Jun-Ho Huh
Keyword(s):  
Smart Grid ◽  
Nuclear Power ◽  
Power Plants ◽  
Group Signature ◽  
Smart Devices ◽  
Specific Information ◽  
Signature Scheme ◽  
Grid Environment ◽  
Power Stations ◽  
Types Of Information

It is now known that more information can be leaked into the smart grid environment than into the existing environment. In particular, specific information such as energy consumption data can be exposed via smart devices. Such a phenomenon can incur considerable risks due to the fact that both the amount and the concreteness of information increase when more types of information are combined. As such, this study aimed to develop an anonymous signature technique along with a signature authentication technique to prevent infringements of privacy in the smart grid environment, and they were tested and verified at the testbed used in a previous study. To reinforce the security of the smart grid, a password and anonymous authentication algorithm which can be applied not only to extendable test sites but also to power plants, including nuclear power stations, was developed. The group signature scheme is an anonymous signature schemes where the authenticator verifies the group signature to determine whether the signer is a member of a certain group but he/she would not know which member actually signed in. However, in this scheme, the identity of the signer can be revealed through an “opener” in special circumstances involving accidents, incidents, or disputes. Since the opener can always identify the signer without his/her consent in such cases, the signer would be concerned about letting the opener find out his/her anonymous activities. Thus, an anonymous signature scheme where the signer issues a token when entering his/her signature to allow the opener to confirm his/her identity only from that token is proposed in this study.

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.

Heat-Resistant Antifriction Carbon Plastics for Sliding Bearings of Pumps of Ship Power Stations, Thermal and Nuclear Power Plants

2019 ◽  
Vol 10 (6) ◽  
pp. 1412-1420
Author(s):  
V. E. Bakhareva ◽  
V. S. Bogun ◽  
I. V. Lishevitch ◽  
I. V. Nikitina ◽  
A. S. Sargsyan
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Sliding Bearings ◽  
Heat Resistant ◽  
Power Stations ◽  
Carbon Plastics

Efficient Power Generation From Large 750°C Heat Sources: Application to Coal-Fired and Nuclear Power Stations

1980 ◽  
Author(s):  
Z. P. Tilliette ◽  
B. Pierre
Keyword(s):  
Power Generation ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Energy ◽  
Inlet Temperature ◽  
Heat Sources ◽  
Turbine Inlet Temperature ◽  
Power Stations ◽  
Efficient Power ◽  
Steam Cycle

Considering the concern about a more efficient, rational use of heat sources, and a greater location flexibility of power plants owing to cooling capability, closed gas cycles can offer new solutions for fossil or nuclear energy. An efficient heat conversion into power is obtained by the combination of a main non-intercooled helium cycle with a flexible, superheated, low-pressure bottoming steam cycle. Emphasis is placed on the matching of the two cycles and, for that, a recuperator bypass arrangement is used. The operation of the main gas turbocompressor does not depend upon the operation of the small steam cycle. Results are presented for a conservative turbine inlet temperature of 750 C. Applications are made for a coal-fired power plant and for a nuclear GT-HTGR. Overall net plant efficiencies of 39 and 46 percent, respectively, are projected.

An Evaluation of the Equipment Tagging Process in Nuclear Power Stations

1983 ◽  
Vol 27 (1) ◽  
pp. 93-96
Author(s):  
Peter Doyle ◽  
Lothar Schroeder ◽  
Stephen Brewer
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Electric Utility ◽  
Electric Utility Industry ◽  
Utility Industry ◽  
Power Stations ◽  
The Status ◽  
Identification Techniques ◽  
Tagging Methods

The electric utility industry uses equipment “tagging” methods to identify inoperable equipment and to prevent the status of equipment from being changed for various reasons. Tagging involves identifying such equipment with small tags or other indications and maintaining records of equipment status. Operator reliability in the proper placement of tags is a function of training, good tagging procedures, adequate equipment identification techniques and tag design, among other things. This paper presents the results of an investigation of the tagging process at nuclear power plants.

Effect of Initial Grid's Size in Thermal Diffusion Simulation

2012 ◽  
Vol 516-517 ◽  
pp. 512-518
Author(s):  
Jin Rong Ma ◽  
Ya Qiong Guo
Keyword(s):  
Flow Velocity ◽  
Thermal Diffusion ◽  
Nuclear Power ◽  
Power Plants ◽  
Water Channel ◽  
Thermal Discharge ◽  
Diffusion Phenomenon ◽  
Power Stations ◽  
Constant Diffusion ◽  
Diffusion Simulation

The thermal diffusion similitude should be well considered during the numerical simulating of its distribution in power plants or nuclear power stations. The distribution near the waterspout is well related to the initial grid’s size. The bigger the initial grid is, the faster the thermal diffusion. Reasonable initial grid should be related to thermal discharge and flow velocity. Five different grid’s sizes are adopted to simulate the constant diffusion phenomenon in a rectangle water channel, the currents near the waterspout, the thermal diffusion near or away from the waterspout are discussed in this paper, and a rational size of initial grid is proposed to relative researchers.

High Cycle Thermal Fatigue in French PWR

2002 ◽  
Author(s):  
Eric Blondet ◽  
Claude Faidy
Keyword(s):  
Thermal Fatigue ◽  
Nuclear Power ◽  
Power Plants ◽  
Load History ◽  
Power Stations ◽  
The World ◽  
Potential Damage ◽  
High Cycle Thermal Fatigue ◽  
Coolant System ◽  
Reactor Pressure

Different fatigue-related incidents which occurred in the world on the auxiliary lines of the reactor coolant system (SIS, RHR, CVC) have led EDF to search solutions in order to avoid or to limit consequences of thermodynamic phenomenal (Farley-Tihange, free convection loop and stratification, independent thermal cycling). Studies are performed on mock-up and compared with instrumentation on nuclear power stations. At the present time, studies allow EDF to carry out pipe modifications and to prepare specifications and recommendations for next generation of nuclear power plants. In 1998, a new phenomenal appeared on RHR system in Civaux. A crack was discovered in an area where hot and cold fluids (temperature difference of 140°C) were mixed. Metallurgic studies concluded that this crack was caused by high cycle thermal fatigue. Since 1998, EDF is making an inventory of all mixing areas in French PWR on basis of criteria. For all identified areas, a method was developed to improve the first classifying and to keep back only potential damage pipes. Presently, studies are performing on the charging line nozzle connected to the reactor pressure vessel. In order to evaluate the load history, a mock-up has been developed and mechanical calculations are realised on this nozzle. The paper will make an overview of EDF conclusions on these different points: • dead legs and vortex in a no flow connected line; • stratification; • mixing tees with high ΔT.

scholarly journals Determination of Anthropogenic Changes in Urbanized Territories Using GIS Technology

2017 ◽  
Vol 63 (1) ◽  
pp. 8-14
Author(s):  
Igor Patrakeyev ◽  
Victor Ziborov ◽  
Nadia Lazorenko-Hevel
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Thermal Structure ◽  
Thermal Power ◽  
Infrared Range ◽  
Gis Technology ◽  
Thermal Anomalies ◽  
Power Stations ◽  
Thermal Power Stations ◽  
Anthropogenic Systems

Abstract The research aim is to obtain a cartographic model of an urbanized territory by means of thermal survey in an infrared range. With this cartographic model, it will be then possible to reduce the zones in the urbanized territories differing in the level of superficial heat. Further, we will be able to reduce the proof thermal anomalies and thermal structures of the localities that are related to the natural and anthropogenic systems. On the examples of the cities of Ukraine – Energodar and Nikopol, we defined the sources of caloradiances from major industrial concerns as well as from thermal and nuclear power plants. For comparison, we built the model of thermal structure of the city of Tokai and the nuclear power plant with the same name Tokai (Japan). The sources of caloradiances can be, for example, pipes of thermal power stations, ponds-coolers, corps of steel-making production, and other similar objects. If the sizes of such source are known, then we are able to get the absolute values of temperatures.

NPP-Smart Grid Mutual Safety and Cyber Security Assurance

2020 ◽  
pp. 349-380
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.

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