GE Multilin N60 Network Stability and Synchrophasor Measurement System 5-1395 SETTINGS 5.6 GROUPED ELEMENTS55.6.7 SENSITIVE DIRECTIONAL POWERPATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) POWER SENSITIVE DIRECTIONAL POWER DIRECTIONAL POWER 1(2)The sensitive directional power element responds to three-phase directional power and is designed for reverse power andlow forward power applications for synchronous machines or interconnections involving co-generation. The relay measuresthe three-phase power from either full set of wye-connected VTs or full-set of delta-connected VTs. In the latter case, thetwo-wattmeter method is used. Refer to the UR-series metering conventions section in chapter 6 for details regarding theactive and reactive powers used by the sensitive directional power element.The element has an adjustable characteristic angle and minimum operating power as shown in the Directional power char-acteristic diagram. The element responds to the following condition:(EQ 5.11)where: P and Q are active and reactive powers as measured per the UR-series metering convention,θ is a sum of the element characteristic (DIR POWER 1 RCA) and calibration (DIR POWER 1 CALIBRATION) angles, andSMIN is the minimum operating powerThe operating quantity is displayed in the ACTUAL VALUES METERING SENSITIVE DIRECTIONAL POWER 1(2) actualvalue. The element has two independent (as to the pickup and delay settings) stages for alarm and trip, respectively. DIRECTIONAL POWER 1DIR POWER 1FUNCTION: DisabledRange: Disabled, EnabledMESSAGE DIR POWER 1SOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6MESSAGE DIR POWER 1RCA: 0°Range: 0 to 359° in steps of 1MESSAGE DIR POWER 1CALIBRATION: 0.00°Range: 0 to 0.95° in steps of 0.05MESSAGE DIR POWER 1 STG1SMIN: 0.100 puRange: –1.200 to 1.200 pu in steps of 0.001MESSAGE DIR POWER 1 STG1DELAY: 0.50 sRange: 0.00 to 600.00 s in steps of 0.01MESSAGE DIR POWER 1 STG2SMIN: 0.100 puRange: –1.200 to 1.200 pu in steps of 0.001MESSAGE DIR POWER 1 STG2DELAY: 20.00 sRange: 0.00 to 600.00 s in steps of 0.01MESSAGE DIR POWER 1 BLK:OffRange: FlexLogic™ operandMESSAGE DIR POWER 1TARGET: Self-ResetRange: Self-Reset, Latched, DisabledMESSAGE DIR POWER 1EVENTS: DisabledRange: Disabled, EnabledP θcos Q θsin+ SMIN>
