To study and evaluate the use of private 5G networks for smart grid applications, such as protection.
The studies examine the impact of various 5G network configurations on the performance of the smart grid application/protection systems.
Work performed
Testbeds integrating smart grid lab setup with private 5G network from NOKIA operated by NTNU has been implemented.
Another variant of testbed using open source 5G software and radio platform is also developed.
Characterization test of using 5G for protection related application is carried out using both NOKIA managed and open source private 5G.
Different configurations of the 5G networks have also been tested and their impact on the latency performance analysed.
Significant results
Delay ranges observed were sufficient for some smart grid applications like Advanced Metering Infrastructure (AMI) and demand response.
For sensitive applications like protection systems, delays of 15-30 ms Round Trip Time (RTT) were observed, which may be insufficient for certain schemes.
Tuning some 5G radio parameters slightly improved latency, though further tuning of additional parameters like QoS setting was limited by the current setup.
Impact for distribution system innovation
Current 5G networks can deliver low latencies beneficial for certain applications.
Further investigation and customization are needed for sensitive applications.
The developed testbed environment can be leveraged to test and verify various 5G configurations tailored for real smart grid applications.
