IEC 61850 Substation Communication Network Performance & Reliability Assessment Based on Network Real Time Operating Data

2020 ◽  
Author(s):  
J. Esabu ◽  
J.O. Egwaile ◽  
P.E. Orukpe ◽  
S A. Ike
Keyword(s):  
Communication Network ◽  
Real Time ◽  
Network Performance ◽  
Reliability Assessment ◽  
Iec 61850 ◽  
Operating Data

scholarly journals A Survey on Vulnerabilities and Countermeasures in the Communications of the Smart Grid

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1881
Author(s):  
Jesús Lázaro ◽  
Armando Astarloa ◽  
Mikel Rodríguez ◽  
Unai Bidarte ◽  
Jaime Jiménez
Keyword(s):  
Smart Grid ◽  
Real Time ◽  
International Electrotechnical Commission ◽  
Communication Infrastructure ◽  
Iec 61850 ◽  
Best Effort ◽  
Electrical Grid ◽  
Informational Technology ◽  
Iec 62351 ◽  
Time Critical

Since the 1990s, the digitalization process has transformed the communication infrastructure within the electrical grid: proprietary infrastructures and protocols have been replaced by the IEC 61850 approach, which realizes interoperability among vendors. Furthermore, the latest networking solutions merge operational technologies (OTs) and informational technology (IT) traffics in the same media, such as time-sensitive networking (TSN)—standard, interoperable, deterministic, and Ethernet-based. It merges OT and IT worlds by defining three basic traffic types: scheduled, best-effort, and reserved traffic. However, TSN demands security against potential new cyberattacks, primarily, to protect real-time critical messages. Consequently, security in the smart grid has turned into a hot topic under regulation, standardization, and business. This survey collects vulnerabilities of the communication in the smart grid and reveals security mechanisms introduced by international electrotechnical commission (IEC) 62351-6 and how to apply them to time-sensitive networking.

Transfusion Monitoring and Controlling System Based on Wireless Communication

2012 ◽  
Vol 214 ◽  
pp. 579-583
Author(s):  
Jiang Ma ◽  
Yu Qiao Wen ◽  
Ling Yan Du ◽  
Xiao Xiao Liang ◽  
Chong Gang Wei
Keyword(s):  
Communication Network ◽  
Wireless Communication ◽  
Real Time ◽  
Wireless Transmission ◽  
The Core ◽  
Wireless Transceiver ◽  
Controlling System ◽  
Transceiver Module ◽  
Medical Accident

Transfusion monitoring and controlling system of wireless communication is designed for avoidance of medical accident due to inconsiderate care. This system is based on RS-485 bus protocol to build the communication network, consisting of master computer and slave computer. STM32F103R8T6 MCU is the core of the master computer, and MSP430F2132 MCU for slave computer. The wireless transmission of data between master computer and slave computer can be done by nRF905 wireless transceiver module. One new calculation of drop speed is used for better real-time displaying thereof. Provided that abnormal occurrence is during the transfusion, the transfusion tube will be closed by controlling order from system, in order to protect the patient.

scholarly journals Cooperative Spectrum Sensing Based on HML and Vector Quantization for Cognitive Radio Networks

2018 ◽  
Vol 7 (2.20) ◽  
pp. 335
Author(s):  
Shweta Alpna ◽  
Amrit Mukherjee ◽  
Amlan Datta
Keyword(s):  
Communication Network ◽  
Cognitive Radio ◽  
Real Time ◽  
Spectrum Sensing ◽  
Vector Quantization ◽  
Cooperative Spectrum Sensing ◽  
Radio Networks ◽  
Secondary Users ◽  
The Real ◽  
Novel Technique

The proposed work illustrates a novel technique for cooperative spectrum sensing in a cognitive radio (CR) network. The work includes an approach of identifying secondary users (SUs) based on Hierarchical Maximum Likelihood (HML) technique followed by Vector Quantization. Initially, the arrangement of the SUs are been observed using HML with respect to a spatial domain and then the active SUs among them are identified using VQ. The approach will not only save the energy, but the decision of the real-time and dynamic cooperative communication network becomes more accurate as we can predict the behavior of SUs movement and spectrum sensing by each individual SU at that particular  place. The results and simulations of the real-time experiment justifies with the proposed approach. 

scholarly journals Reliability Assessment of Road Network Operation

2021 ◽  
Vol 334 ◽  
pp. 02009
Author(s):  
Maxim Sharov ◽  
Alexey Levashev ◽  
Alexander Mikhailov
Keyword(s):  
Performance Appraisal ◽  
Russian Federation ◽  
Traffic Control ◽  
Road Network ◽  
Network Performance ◽  
Network Reliability ◽  
Reliability Assessment ◽  
Peak Period ◽  
Highway Network ◽  
Network Operation

In the frame of the project «Criteria of traffic control quality and effectiveness in Russian Federation» the Transportation Laboratory of ISTU was invoved into elaboration of network performance appraisal. Two alternative congestion measures were considered. The ratio of peak period to free flow travel times was proposed as a test criterion of urban highway network reliability.

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