Figure 1 presents a 11 kV network with a generator, grid connection, bus sectionalizers, local power generation and two feeder loads to illustrate a more realistic application. The target is to create a complete autosynchronization system were each of the breakers, except for CB1 and CB2, are capable of performing synchronized closing. The system is continuously aware of the relevant primary objects’ switching status as well as the availability of the generator. Depending on which circuit breaker is selected for synchronization, the system checks the conditions and proceeds only if the selected circuit breaker is viable. As the feeder relays do not have any dependency on the autosynchronization system, they are not explained further in this example. This example case is used in the selections made in the following chapters.
Figure 2 presents the terminology used in a typical topology for different busbar arrangements containing an NSCB. It only depicts the logical connections and does not represent any primary network.
Figure 3 presents the terminology used in a typical topology for different busbar arrangements containing a GCB. It only depicts the logical connections and does not represent any primary network.