GE MiCOM P40 Agile Technical Manual

Also see for MiCOM P40 Agile: Technical manual Technical manual Technical manual Technical manual Technical manual

Contents

Application Notes P44x/EN AP/Hb6MiCOM P40 Agile P442, P444 (AP) 5-71P3053ENaZ2Z2TripZ2LOL-ALOL-BLOL-CZ1Z1Z1 Z1&&&040ms18ms01Figure 48: Loss-of-load accelerated trip schemeFor circuits with load tapped off the protected line, care must be taken in setting the loss ofload feature to ensure that the I< level detector setting is above the tapped load current.When selected, the loss of load feature operates in conjunction with the main distancescheme that is selected. In this way it provides high speed clearance for end zone faultswhen the Basic scheme is selected or, with permissive signal aided tripping schemes, itprovides high speed back-up clearance for end zone faults if the channel fails.Note: Loss of load tripping is only available where 3 pole tripping is used.3.3 Power SwingSee section 4.1.3.4 Other protection considerations - settings example3.4.1 Distance Protection Setting Example3.4.1.1 ObjectiveTo protect the 100km double circuit line between the Green Valley and Blue Riversubstations using relay protection in the POP Z2 Permissive Overreach mode and to set therelay at Green Valley substation, as shown in Figure 49.