Abstract
In this paper, a data-centric communication framework is proposed for multicast routable generic object-oriented substation event (GOOSE) messages (MRGM) over the wide area network (WAN) for effective substation-to-substation (SS2SS) and substation to control center (SS2CC) communications. In this structure, the IEC 61850 GOOSE message is transmitted over the WAN using the data distribution service (DDS) as a fast, reliable, and secure data-centric communication middleware. The main feature of this framework is its multicast capability, where several authorized subscribers can receive a published message simultaneously. This can significantly improve the system monitoring and control of the protection systems in modern smart grids, where intelligent schemes can be applied. The effectiveness of the proposed platform, in terms of total end-to-end delay between participants, is evaluated through experimental results obtained from the actual hardware-based test setup developed at the Florida International University (FIU) smart grid testbed. The results demonstrate that the latency between sending and receiving a GOOSE message among participants is within its maximum time span defined by the IEC 61850-90-5 working group for communications over the WAN.
Highlights
The substation automation system (SAS) plays a vital role in the optimal and reliable operation of modern power systems
To(around evaluate thebecause latency of generic object-oriented substation event (GOOSE) delivery, we needed to examine a large number of samples
It is because of this fact that the processors deal with deal with each sample differently, we had calculate the average latency of various time differently, delays between inputwe and output signals
Summary
The substation automation system (SAS) plays a vital role in the optimal and reliable operation of modern power systems. By creating the 5G networks, a specific slice can be allocated for delay sensitive messages and, for example, slice isolation can help with managing the traffic as mentioned in [16] This reference categorizes the different message types used in distribution grid protection and control from the standard defined by IEC 61850 and maps onto the three major groups of 5G use cases. Instead of processing the messages locally in application, as is done in a message-centric approach; in a data-centric approach the messages are being processed within the middleware layer to assess the correctness of data types delivered to all nodes It simplifies the application development and system expansion, enhances the system reliability, optimizes the use of network bandwidth, and gives us more opportunities to assign different Quality of Service (QoS) profiles, priorities, and security measures to the data types as comparing with a message-centric approach [18]. DDS is described, and its unique features are mentioned in detail
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