Integrated simulation model of power system protection schemes and process bus communication networks

An integrated simulation model of power system protection schemes and IEC 61850 process bus communication models was developed for the design of substation automation systems of the future. The model is capable of reproducing a sequence of the relevant events and equipment states under different operation scenarios, including normal operation and power system fault disturbances. The model includes a description of the power system, the protection scheme, including its several intelligent electronic devices, and the process bus communication network. The model allows an assessment of the functional correctness of steady-state operation of the protection scheme as well as during a power system fault clearance process. It also allows the performance evaluation of the underlying communication network. The capabilities of the model are illustrated with an example scenario of power system fault followed by circuit breaker failure.