This component generates standardized Transient Recovery Voltage (TRV) curves and outputs violations when the input voltage exceeds the envelope. This is a simplified approach to determining whether a breaker will restrike after a current interruption.
There are several options available for standardized envelopes:
User Defined: The user can enter data points for up to four, two-parameter curves and four, four-parameter curves.
IEC: Using the standardized curve parameters from IEC 62271, the user can select the TRV breaker class and voltage level.
IEEE: Using the standardized curve parameters from IEEE C37.011-2019, the user can select the TRV breaker class and voltage level.
IEC + User Defined: Using the standardized curve parameters from IEC 62271, the user can select the TRV breaker class and voltage level. In addition the user can enter data points for up to four, two-parameter curves and four, four-parameter curves. This can be used to enter supplementary curves that are not included in the standard.
IEEE + User Defined: Using the standardized curve parameters from IEEE C37.011-2019 the user can select the TRV breaker class and voltage level. In addition the user can enter data points for up to four, two-parameter curves and four, four-parameter curves. This can be used to enter supplementary curves that are not included in the standard.
Source Fault: Special TRV curves used for breakers installed between a generator and a transformer. Two parameter curves found in IEEE C37.013.
Brk: This input accepts the breaker status signal output from a three phase breaker model.
TRV: This input accepts the measured voltage across the breaker.
Vio(A-B-C): One violation output for each phase. Blue pip indicates A phase. Violations order is 10%, 30%, 60%, 100%, User 2p Curve 1-4, User 4p Curve 1-4. A violation output occurs when the TRV exceeds the envelope.
Env(A-B-C): One envelope output for each phase. Blue pip indicates A phase. Envelopes order is 10%, 30%, 60%, 100%, User 2p Curve 1-4, User 4p Curve 1-4 then the negative envelopes in the same order.
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