The value of k=0.92 is recommended in generator applications as the trip delay is normallyquite long.The calibration factors for current and voltage measurement errors are set % of ratedcurrent/voltage:IMagComp5, IMagComp30, IMagComp100VMagComp5, VMagComp30, VMagComp100IMagComp5, IMagComp30, IMagComp100The angle compensation is given as difference between current and voltage angle errors.The values are given for operating points 5, 30 and 100% of rated current/voltage. Thevalues should be available from instrument transformer test protocols.9.11 Directional overpower protection GOPPDOP (32)9.11.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberDirectional overpower protection GOPPDOPP >2DOCUMENT172362-IMG158942V2 EN329.11.2 ApplicationThe task of a generator in a power plant is to convert mechanical energy available as atorque on a rotating shaft to electric energy.Sometimes, the mechanical power from a prime mover may decrease so much that it doesnot cover bearing losses and ventilation losses. Then, the synchronous generator becomesa synchronous motor and starts to take electric power from the rest of the power system.This operating state, where individual synchronous machines operate as motors, impliesno risk for the machine itself. If the generator under consideration is very large and if itconsumes lots of electric power, it may be desirable to disconnect it to ease the task for therest of the power system.Section 9 1MRK 506 369-UUS -Current protection554 Line distance protection REL670 2.2 ANSIApplication manual
