ABB Relion 670 series - Impedance protection; Distance measuring zones, quadrilateral characteristic ZMQPDIS (21), ZMQAPDIS (21), ZDRDIR (21 D); Identification; Introduction(21)

Section 6 Impedance protection
About this chapter
This chapter describes distance protection and associated functions. It includes
function blocks, logic diagrams and data tables with information about distance
protection, automatic switch onto fault, weak end in-feed and other associated
functions. Quadrilateral characteristics are also covered.
6.1 Distance measuring zones, quadrilateral characteristic
ZMQPDIS (21), ZMQAPDIS (21), ZDRDIR (21D)
6.1.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Distance protection zone, quadrilateral
characteristic (zone 1)
ZMQPDIS
S00346 V1 EN
21
Distance protection zone, quadrilateral
characteristic (zone 2-5)
ZMQAPDIS
S00346 V1 EN
21
Directional impedance quadrilateral ZDRDIR
Z<->
IEC09000167 V1 EN
21D
6.1.2 Introduction(21)
The line distance protection is a, up to five zone full scheme protection with three fault
loops for phase-to-phase faults and three fault loops for phase-to-ground faults for each
of the independent zones. Individual settings for each zone in resistive and reactive
reach gives flexibility for use as back-up protection for transformer connected to
overhead lines and cables of different types and lengths.
1MRK505222-UUS C Section 6
Impedance protection
173
Technical reference manual