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Simulation study on delay of end-to-end data
communication for protective relaying in substations |
| GAO Huisheng, JIN Weiwei, LIU Guang |
| School of Electrical and Electronic Information Engineering, North China Electric Power University |
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Abstract The end-to-end delay of protective relaying data flow in a substation was studied by dynamic simulation modeling technology. The distribution characteristics of protective relaying data flow and the constitution of the end-to-end delay of messages were analyzed. The simulation model for digital communication between protective relaying equipment and monitoring equipment of interval layer was suggested. The end-to-end delay of protective relaying data flow in different network configurations was analyzed. It is found that the size and interval of the data frame, utilization of the link background and protocols of higher layer are key factors of real-time performance. Detailed analysis results are presented. A proposal for network configuration is suggested to reduce end-to-end delay of protective relaying data flow.
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Issue Date: 05 June 2008
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