Driven by interoperability among multiple vendors equipment, Scottish Power Energy Networks (SPENs) has deployed a full digital substation architecture and real digital substation implementation though the Future Intelligent Transmission Network Substation (FITNESS) project. Two redundancy data communication protocols are considered and utilized to improve the data communication network reliability and availability performance. They are High-availability Seamless Redundancy (HSR) protocol and Parallel Redundancy Protocol (PRP). This paper presents the experimental assessment of the impact of faulty components in HRS and PRP redundancies data communication networks on multi-vendor IEDs functionality performances. Different levels of CT saturations are considered during the experimental tests. Results show that PRP network has shorter trip time than HSR under these faulty component conditions. Results also show that different levels of CT saturations do have some effects on the IEDs tripping time performance.
L. Xu, H. Li, P. Mohapatra, 2020 page