Intelligent Auxiliary Control System Interoperability Test Framework for Smart Substation with Communication Interference

At present, the intelligent auxiliary control system of smart substations lacks a unified and clear technical specification for entering the network, and the quality of products from various manufacturers varies, which adversely affects the operation and maintenance of smart substations. This paper proposes an interoperability test framework based on information simulation and considers the impact of perturbations caused by fluctuations in the substation communication network on the interoperability of the auxiliary control system. A schematic diagram of substation network communication interference is proposed. A network communication interference simulator can emulate false data interference (FDA), denial of service interference also known as network jamming interference (NJA), and device damage interference depending on the cause of the network simulation (DDA) for the test process. It carries out research on relevant function, performance, and protocol consistency test methods and develops a performance test system for the auxiliary control system of smart substations. The results show that the new test framework improves the interoperability of the Intelligent Auxiliary Control System.