ABB RELION REL670, Руководство по установке и пусконаладке

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Logic Chapter 11
Verifying settings by secondary
injection
13 Logic
13.1 Tripping logic (PTRC, 94)
Prepare the IED for verification of settings as outlined in section 1 "Overview" and section 2
"Preparing for test" in this chapter. This function is functionality tested together with other pro-
tection functions (line differential protection, earth-fault overcurrent protection, etc.) within the
IED. It is recommended that the function is tested together with the autoreclosing function, when
built into the IED or when a separate external unit is used for reclosing purposes. The instances
of the TRP function are identical except for the name of the function block (TRPx). The testing
is preferable done in conjunction with the protection system and autoreclosing function.
13.1.1 Three phase operating mode
Procedure
1. Make sure that AutoLock and TripLockout are both set to Off.
2. Initiate a three-phase fault
An adequate time interval between the faults should be considered, to
overcome a reclaim time caused by the possible activation of the autore-
closing function. The function must issue a three-phase trip in all cases,
when trip is initiated by any protection or some other built-in or external
function. The following functional output signals must always appear si-
multaneously: TRIP, TRL1, TRL2, TRL3 and TR3P.
13.1.2 1ph/3ph operating mode
In addition to various other tests, the following tests should be performed. They depend on the
complete configuration of an IED:
Procedure
1. Make sure that TripLockout and AutoLock are both set to off.
2. Initiate different single-phase-to-earth faults one at a time.
Single phase tripping will only be allowed when an auto-reclose attempt
will follow. Autoreclose function has functionality such as the long trip
time, CB ready etc. which can prevent a proper single phase tripping and
auto-reclose. To by-pass this problem the fault initiation should be with
a test set and with the auto-reclose in full service with a test set connected
to the distance protection function. Consider using an adequate time in-
terval between faults, to overcome a reclaim time of which is activated
by the autoreclosing function. Only a single-phase trip should occur for
each separate fault and only one of the trip outputs (TRLn) should be ac-
tivated at a time. Functional outputs TRIP and TR1P should be active
during each fault. No other outputs should be active.