Discussion on Relay Protection Configuration for the 110 kV Terminal Substation Combined with Small Generation Sets

Small generation sets are integrated into power systems through 110 kV terminal substations,which increases the complexity of relay protection configuration;If relay protection is not configured properly,the generators may weaken the self recovery ability of power systems from system accident,which would extend the accident scope;After analyzing a typical accident on a 110 kV terminal transformer combined with a small generation set,new relay protection configuration principles and particular means were brought forward.