Reduced breaking capability of circuit breakers within operations with delayed current zeros

The paper is focused on analysis and comparison of breaking capability of conventional distributional circuit breakers and generator circuit breakers within special cases of breaking. The loss of breaking capability in limitary areas of breaking characteristics might lead to the circuit breaker's failure during clearances of asymmetrical currents with large DC component. The first part of the paper is focused on asymmetrical and symmetrical current comparison, then the breaking capability is introduced. The last part of the paper is focused on evaluation of breaking capability within the specific application.