Transcription
Condition Management System forHydro-Turbine GeneratorsAn Application GuideBently Nevada Asset Condition MonitoringTable of Contents1. Disclaimer 42. Abbreviations. 43. Introduction. 54. HTG Asset Management. 54.1 The Problem. 54.2 The Solution. 54.3 Transducers. 64.4 Monitoring and Protection. 64.5 Asset Management. 75. P-F Curve 86. Types of HTG Construction. 86.1 Francis Runner. 86.1.1 Pump Storage Units in Pump Storage Hydro Power Plants. 96.2 Kaplan Runner.106.2.1 Bulb Units.106.3 Pelton Runner.106.4 Synchronous Condensers.117. HTG MAINTENANCE PROBLEMS.128. CMS Measurements for HTG.128.1 Overview.128.2 Temperature.128.3 Vibration.12application note
application note8.4 Position Measurements.138.5Air Gap.138.6Other Specific Measurements for HG.148.6.1Partial Discharge.148.6.2Electro-Magnetic Flux.148.6.3Stator Segment Vibration.148.6.4Stator End-Winding Vibration.148.6.5Stator Bar Vibration.148.6.6Stator Frame Vibration.158.6.7Stator Case Vibration.158.6.8Sole Plate Position.158.7Specific Measurements for Various HT Runners.158.7.1Kaplan Runners.158.7.2Francis Runner.158.7.3Pelton Runner.168.8Water Dedicated Measurements.168.8.1Flow.168.8.2Pressure.16Speed and Phase Related.168.98.9.1Keyphasor* Probe.168.9.2Speed.178.9.3Creep.178.10Other Measurements.188.10.1 Shaft Voltage/Current.188.10.2 Torsional Vibrations.188.10.3 Wicket Gate Vibration.188.10.4 Penstock Pipe Position/Vibrations.199. Horizontal vs. Vertical Orientation Considerations.1910. Monitoring (and Protection) Systems Selection.2010.1Selection Considerations.2010.2Selection Criteria – Malfunctions.2110.3Selection Criteria – Maintenance Approach.2210.4Product Features.2210.5Best Practice Recommendations.2310.5.1 HTG Measurement Conventions.2310.5.2 Sensor Low-End Frequency Response.242
application note10.6Rotor Measurements.2410.6.1 Keyphasor.2410.6.2 Axial Position.2410.7Guide Bearing.2510.7.1Bearing Temperature.2510.7.2Rotor Relative Vibration (Runout).2510.7.3Guide Bearing/Support Vibration.2510.8Thrust Bearing Measurements.2610.8.1 Thrust Pad Temperature.2610.8.2 Thrust Pad Oil Film Thickness.2610.9Stator and Windings.2710.9.1 Air Gap (AG).2710.9.2 Stator Temperature.2710.9.3 Stator Frame Vibration.2810.9.4 Stator End Winding (SEW).2810.9.5 Sole Plate Position.2910.9.6 Partial Discharge.2910.9.7 Magnetic Flux.2910.10 Wicket Gate.3010.10.1 Vibration.3010.11 Turbine.3010.11.1 Seal Ring Position/Blade Tip Clearance.3010.11.2 Cavitation.3110.11.3 Rough Load Zone (Rheingans Influence).3110.12 Penstock.3210.12.1 Flow Monitoring.3210.12.2 Pressure Monitoring.3210.12.3 Alarm Management.3210.12.4 CMS Hardware: multimode functionality.3311. LOWER LEVEL OF CMS: S/W build systems.3411.1Components of a diagnostic system.3411.2Types of data acquisition.3411.3Data acquisition in Alarm Conditions.3411.4Type of analysis.3411.5AIR GAP analysis.3411.6Multi State Analysis in CMS.353
application note11.6.1 Operating Conditions.3511.6.2 Logic Rules.3511.6.3 State-Based Analysis.3611.6.4 Conclusions for the Multistate Analysis.3612. UPPER LEVEL OF CMS: S/W build systems The Industrial Internet.3612.1Variety of analysis system solutions.3612.2Anomaly detection systems.3712.3An example of anomaly detection in HPP.3712.4Deterministic expert system for HPP.3912.5Variety of analysis system solutions.4012.6Final Remarks Regarding the Intelligent Diagnostic.40References.41APPENDIX TABLES.42Appendix 1: Industry Related Standards and Guidelines.42APPENDIX 2: Technology Discussion.42APPENDIX 3: CEATI Tolerances for Air Gap Monitoring.451 DisclaimerCM&PS Condition Monitoring and Protection SystemCTQCr
BN MDS Bently Nevada Machinery Diagnostics Services BOM Bill of Materials CMS Condition Management System CMSw Condition Monitoring Software CM&PS Condition Monitoring and Protection System CTQ Critical to Quality ECT Eddy Current Transducer ESD Emergency Shutdown Device FO Fiber Optic HG Hydro Generator HT Hydro Turbine HPP Hydro Power Plant
