Distance: Test View
Distance provides the functionality to define and perform tests of distance relays by impedance element evaluations using single-shot definitions in the Z-plane with graphical characteristic display.
Definition of relay characteristics
The nominal relay characteristics and settings can quickly and easily be defined by a graphical characteristic editor. Starting, trip, extended, and no-trip zones are defined by using pre-defined elements. The standard XRIO interface1 makes it possible to directly import the relay data from the relay's parameter setting software (if supported by the relay manufacturer). The impedance settings for the zones can be entered and displayed in primary or secondary values.
Definition of tests
Distance: Time Signal View
Tests are defined in the impedance plane by entering the test points to a test point table. Test points can be defined for several fault loops at the same time (e.g. for all single-phase loops), or for every fault loop separately.
When a test is performed, the test point lists of the individual fault loops are processed sequentially. The reaction of the relay is compared to the specified nominal settings and an automatic assessment is made. The results are displayed graphically in the impedance plane, as well as numerically in the test point table.
