Identification.................................................................................... 113Application....................................................................................... 114Operation principle.......................................................................... 116Frequency reporting................................................................... 118Reporting filters.......................................................................... 120Scaling Factors for ANALOGREPORT channels....................... 121PMU Report Function Blocks Connection Rules in PCM600Application Configuration Tool (ACT)......................................... 123Setting guidelines............................................................................ 129Section 7 Differential protection........................................................ 135High impedance differential protection, single phase HZPDIF (87)......135Identification.................................................................................... 135Application....................................................................................... 135The basics of the high impedance principle............................... 136Connection examples for high impedance differential protection.... 142Connections for three-phase high impedance differentialprotection....................................................................................142Connections for 1Ph High impedance differential protectionHZPDIF (87)............................................................................... 143Setting guidelines............................................................................ 144Configuration.............................................................................. 145Settings of protection function.................................................... 145T-feeder protection..................................................................... 145Tertiary reactor protection.......................................................... 148Alarm level operation..................................................................151Additional security logic for differential protection LDRGFC (11)......... 152Identification.................................................................................... 152Application....................................................................................... 152Setting guidelines............................................................................ 154Section 8 Impedance protection........................................................157Distance measuring zone, quadrilateral characteristic for seriescompensated lines ZMCPDIS (21), ZMCAPDIS (21), ZDSRDIR (21D)157Identification.................................................................................... 157Application....................................................................................... 157Introduction.................................................................................157System grounding.......................................................................158Fault infeed from remote end..................................................... 160Load encroachment....................................................................161Long transmission line application..............................................162Table of contentsLine distance protection REL670 2.2 ANSI 3Application manual
