generator protections
Post on 09-Apr-2016
13 Views
Preview:
DESCRIPTION
TRANSCRIPT
GENERATOR PROTECTIONS
• PROTECTING AGAINST ABNORMAL OPERATING CONDITIONS
• THESE PROTECTIONS INITIATE ALARM TO DRAW OPERATOR ATTENTION
• ALSO INITIATE AUTOMATIC TRIPPING IN CASE OPERATING PARAMETERS CONTINUE TO BE ABNORMAL
GENERATOR PROTECTIONS
• OVERCURRENT• OVERVOLTAGE• NEGATIVE SEQUENCE CURRENTS• UNBALANCE CURRENTS• OVER FLUXING• FIELD FAILURE• POLE SLIPPING• LOW FORWARD POWER• REVERSE POWER
GENERATOR PROTECTIONS(COVERING ELECTRICAL FAULTS)
• STATOR EARTH FAULT• STATOR PHASE TO PHASE FAULT• STATOR INTER TURN FAULT• GEN. & GT. OVERALL DIFFERENTIAL• GEN. TRANSFORMER REF.• ROTOR SINGLE EARTH FAULT• ROTOR DOUBLE EARTH FAULT• ROTOR INTER TURN FAULT
CLASSIFICATION OF PROTECTIONS
•CLASS A PROTECTIONS•CLASS B PROTECTIONS•CLASS C PROTECTIONS
GENERATOR DIFFERENTIAL PROTECTION
GEN / G.T. OVERALL DIFF PROTECTION
ROTOR EARTH FAULT PROTECTION
top related