Research and application of network load stress test for smart substation

Load stress test of secondary equipment network is important for the large-scale construction of smart substations. In this article, several secondary equipment network schemes and their influence on relays related IEDs are discussed, and then stress test objects, principles for smart substation are proposed. Based on embedded CPU and large-scale FPGA, load stress testing device for secondary equipment network in smart substation is implemented with characteristic of supplying multi-type stress data stream along with IEDs' necessary working stream, and field test practice is introduced in the end.