CHAPTER 6: ACTUAL VALUES RECORDSL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-2966.5 Records6.5.1 Fault reportsACTUAL VALUES RECORDS FAULT REPORTS FAULT REPORT 1(15)The latest 15 fault reports can be stored. The most recent fault location calculation (when applicable) is displayed in thismenu, along with the date and time stamp of the event which triggered the calculation. See the SETTINGS PRODUCTSETUP FAULT REPORTS menu for assigning the source and trigger for fault calculations. See the COMMANDS CLEARRECORDS menu for manual clearing of the fault reports and to the SETTINGS PRODUCT SETUP CLEAR RELAY RECORDSmenu for automated clearing of the fault reports.The faulted segment of the line is indicated when the synchronized voltage and currents method is used. When the faultedsegment cannot be determined, the FAULT 1 FAULTED SEGMENT value displays “N/A”. For three-terminal lines, the faultlocation (distance to the fault) is reported as seen from the terminal adjacent to the fault. A FlexAnalog, Faulted Segment,is linked to FAULT 1 FAULTED SEGMENT, to indicate the faulted segment, where N/A is denoted as 0, Local as 1, Remote 1 as2, and Remote 2 as 3. In the three-terminal application, if the fault is identified between the local terminal and the tappoint, the operand TAP-LOCAL FAULT is then asserted high at the local relay.The FAULT 1 FAULT RESIST displays the fault resistance at the fault point, which is shown in the secondary ohms. Thecalculation is explained in the Theory of Operation chapter.The FAULT 1 LOOP RESISTANCE and REACTANCE are expressed in secondary ohms. When the multi-ended fault locationmethod is applied, the fault loop impedance is calculated as the summation of fault resistance and faulted portion of theline positive sequence impedance. The fault loop resistance is calculated byRloop = RF + Dpu x Real(Z1 ) Eq. 6-7The fault loop reactance is calculated byX loop = D pu x Imag(Z1 ) Eq. 6-8NO FAULTS TO REPORTor FAULT REPORT 1 FAULT 1LINE ID: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4 FAULT 1 DATE:2000/08/11Range: YYYY/MM/DD FAULT 1 TIME:00:00:00.000000Range: HH:MM:SS.ssssss FAULT 1 TYPE:ABGRange: not available if the source VTs are in the“Delta” configuration FAULT 1 LOCATION00.0 kmRange: not available if the source VTs are in the“Delta” configuration FAULT 1 FAULTEDSEGMENT: LocalRange: N/A, Local (two-terminal configuration and localsection for three-terminal), Remote 1, Remote 2 (three-terminal configuration only) FAULT 1 RECLOSESHOT: 0Range: where applicable FAULT 1 LOOPRESIST: 0.00 OhmsRange: 0 to 327.67 Ohms FAULT 1 LOOPREACT: 0.00 OhmsRange: -327.67 to 327.67 Ohms FAULT 1 FAULTRESIST: 0.00 OhmsRange: 0 to 327.67 Ohms
