generator assessment process - level 3
DESCRIPTION
TRANSCRIPT
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GAPGAPGAPGAPGAPGAPGAPGAP33333333generator assessment processgenerator assessment processgenerator assessment processgenerator assessment process
a solution to life assessment of large generators
[email protected]@gmail.com
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GAPGAPGAPGAP1111 GAPGAPGAPGAP2222
GAPGAPGAPGAP****
GAPGAPGAPGAP4444 GAPGAPGAPGAP3333
GAPGAPGAPGAP****
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GAPGAPGAPGAP3333 is the inspective approach toGAPGAPGAPGAP is the inspective approach to
assess the residual life of machines
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MethodologyMethodologyMethodologyMethodology
The methodology employed isconducting standard and specialelectrical tests and inspection on statorand rotor windings and accessories
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UnitUnitUnitUnit ConditionConditionConditionCondition
The machine is in assembled condition withaccess covers and top half of end bracketsremoved
InspectionInspectionInspectionInspection &&&& teststeststeststests PerformedPerformedPerformedPerformed
Stator windingStator winding
Electrical tests as done in MAP2
Visual and borescope inspection of statorwinding, stator core laminations andfingerplates (as accessible)
Core tightness test (visual indications oflooseness)
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InspectionInspectionInspectionInspection &&&& teststeststeststests PerformedPerformedPerformedPerformed
Corona tests, as accessible, to determineareas and severity of any corona activity
DC step voltage test to determine insulationintegrity
End winding basket frequency checkEnd winding basket frequency check
Rotor winding
Electrical tests as done in MAP2
Visual and borescope inspection of rotorwinding and blocking (as accessible)
Exciter and Accessories
Electrical tests as done in MAP2
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BenefitsBenefitsBenefitsBenefits
Reveals pending faults in winding
Reveals deterioration of coil insulation bycorona or end winding vibration
Establish a base line for evaluating futureinspectioninspection
Accurately assess life and future maintenancerequirements
Record of core tightness
Preventive maintenance plan
Schedule for GAP2222, GAP3333 and GAP4444
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FinalFinalFinalFinal ReportReportReportReport
Standard format provided electronically
Photographs of critical areas
Location and levels of corona activity
Plots showing frequency distribution ofPlots showing frequency distribution ofend winding basket
Core tightness record
Schedule for MAP4
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ExpectedExpectedExpectedExpected DowntimeDowntimeDowntimeDowntime
5-7 days
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Condition AssessmentRisk Assessment Approach
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Condition AssessmentStator
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Operation & Maintenance History
Physical Inspection
Insulation Test
Generator Age
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DC Ramped Voltage Test
Partial Discharge Measurement
Dissipation Factor Measurement
Ozone Monitoring
Black Out TestBlack Out Test
High Potential Withstand Test
Stator Core Inspection
Wedge Tightness Evaluation
Core Loop Test
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ELCID Test
Corona Probe Test
Coupling Resistance Test
Bump test
Capacitance MeasurementCapacitance Measurement
Core Bolt Insulation Resistance
Winding Conductor Resistance Measurement
Impedance Measurement
Winding Dissection
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10987654321
Stator Condition Index
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10740
Stator Data Quality Index
10740
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Condition AssessmentRotor
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Operation & Maintenance History
Physical Inspection
Insulation Test
Generator Age
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High Potential Withstand Test
Rotor Core Inspection
AC Pole Drop Test
AC Impedance Test
Winding Resistance Measurement
RSO Test
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10987654321
Rotor Condition Index
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10740
Rotor Data Quality Index
10740
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Condition AssessmentGenerators
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10987654321
Generator Condition Index
10987654321
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10740
Generator Data Quality Index
10740
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شكرا
THANK YOU
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