5-168 D30 Line Distance Protection System GE Multilin5.6 GROUPED ELEMENTS 5 SETTINGS5b) NEGATIVE SEQUENCE TIME OVERCURRENT (ANSI 51Q, IEC PTOC)PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) NEGATIVE SEQUENCE CURRENT NEG SEQ TOC1(2)The negative-sequence time overcurrent element may be used to determine and clear unbalance in the system. The inputfor calculating negative-sequence current is the fundamental phasor value.Two methods of resetting operation are available; “Timed” and “Instantaneous” (refer to the Inverse Time Overcurrent Char-acteristics sub-section for details on curve setup, trip times and reset operation). When the element is blocked, the timeaccumulator will reset according to the reset characteristic. For example, if the element reset characteristic is set to “Instan-taneous” and the element is blocked, the time accumulator will be cleared immediately.Figure 5–86: NEGATIVE SEQUENCE TOC1 SCHEME LOGIC NEG SEQ TOC1NEG SEQ TOC1FUNCTION: DisabledRange: Disabled, EnabledMESSAGE NEG SEQ TOC1 SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2MESSAGE NEG SEQ TOC1PICKUP: 1.000 puRange: 0.000 to 30.000 pu in steps of 0.001MESSAGE NEG SEQ TOC1CURVE: IEEE Mod InvRange: see OVERCURRENT CURVE TYPES tableMESSAGE NEG SEQ TOC1TD MULTIPLIER: 1.00Range: 0.00 to 600.00 in steps of 0.01MESSAGE NEG SEQ TOC1RESET: InstantaneousRange: Instantaneous, TimedMESSAGE NEG SEQ TOC1 BLOCK:OffRange: FlexLogic™ operandMESSAGE NEG SEQ TOC1TARGET: Self-resetRange: Self-reset, Latched, DisabledMESSAGE NEG SEQ TOC1EVENTS: DisabledRange: Disabled, EnabledFLEXLOGIC OPERANDSNEG SEQ TOC1 FUNCTION:NEG SEQ TOC1 PICKUP:NEG SEQ TOC1 CURVE:NEG SEQ TOC1 TD MULTIPLIER:NEG SEQ TOC1 RESET:NEG SEQ TOC1 INPUT:NEG SEQ TOC1 SOURCE:NEG SEQ TOC1 BLOCK:NEG SEQ TOC1 DPONEG SEQ TOC1 OPNEG SEQ TOC1 PKPAND827057A4.CDRSETTINGSETTINGEnabled=1Disabled=0SETTINGSETTINGNeg SeqOff=0 tNEG SEQ PICKUP <RUN
