ENGIE_Laborelec_Vibrations_September2019.pptx

Vibration technology for power plants

1. 7 Laboratory and Competence Center Vibrations & mechanics ENGIE Laborelec

2. ENGIE Laborelec’s Vibrations & Mechanics division comprises 15 expert engineers. Active in the power generation sector (nuclear and conventional), renewables, hydro, and offering assistance to industry service providers and in relation to OEMs. The team works in three main areas of which two are product orientated: VIBEE TORSO Modelling activities 17 Vibrations and Mechanics organisation 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") Vibration related services/products Independent Torsional Vibration Protection Crack propagation assessments Support in RCA Assessments Creep-fatigue life time assessments Blade dynamics analysis Electrical systems

3. 17 VIBEE What? 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") Protects from severe vibration Emergency Early warning Specialized diagnostic tool Make the right decisions 24/7 Make the right plans Protection system Monitoring system Monitoring services

4. 17 VIBEE Portfolio 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") Balancing Remote and on-site balancing Risk/vibration reduction ISO 20816 zone A criteria result Limiting the cost of the service to the actual value Vibration troubleshooting Independent troubleshooting Interpretation and analysis of incidents or phenomena Remote or on-site investigation Based on installed vibration monitoring system or LVMS 24/7 Expert Assistance Immediate assistance in the event of alarms Risk assessment in the event of alarms 24/7 permanent ISO CATIII expert availability System integrity guarantee Data integrity guarantee Annual reporting Fleet Screening Extensive machine fleet health status Machine specific phenomena Based on installed vibration monitoring system or LVMS Concise reporting

5. 17 LVMS 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") A living platform with continuous development First version: LVMS1 (HP platform) in 1987 Latest version: LVMS4.5 developed in 2018 Efficient system Intelligent alarming Remote visualization Automated remote data back-up Supporting 130 shaft lines worldwide Competitive pricing 20 – 50 % cheaper than other reputed monitoring system suppliers Expert team support A team of 15 vibration experts available 24/7 for incident analysis ISO CATIII certification

6. 17 Mobile LVMS system and remote services operation 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") The technological evolution and the continuous development of LVMS has led to: A transportable compact vibration monitoring system Remote installation procedures Installation videos 24/7 expert availability Video

7. 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") 7 TORSO Torsional vibration protection system RESTRICTED PUBLIC INTERNAL CONFIDENTIAL

8. 17 Excessive torsional vibrations can cause catastrophic failure Sub-synchronous torsional interaction between power plant and grid 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") Changes in grid configuration can cause damaging shaft line torsional vibrations Typically not monitored Potential catastrophic failure without warning (not captured by radial vibration monitoring system) Sub-Synchronous Resonance (SSR) Mainly critical when long-distance transmission lines close to power plants are compensated with series capacitors Unstable behaviour leading to a resonance condition and shaft failure Sub-synchronous Torsional Interaction (SSTI) Mainly critical when power plant is close to an important grid component or consumer Examples: HVDC, Electric Arc Furnace Shaft failure at stress raiser Retaining ring failure

9. 17 TORSO protects power plants from unexpected damage 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") TORSO Monitors torsional vibrations and alarms/trips the unit when necessary Alarm/trip limits based on shaft line vibration model and local stress raisers (fatigue driven) Shaft line is protected regardless of any future changes in grid configuration Typical installation Up to three sensors in different positions on the shaft line Existing speed sensors can be used, or new ones added Installation in 1 week, 1-2 days of standstill required

10. 17 Modelling activities 00/00/2015 PRESENTATION TITLE ( FOOTER CAN BE PERSONALIZED AS FOLLOW: INSERT / HEADER AND FOOTER") Increase power plant flexibility creep/fatigue life time consumption due to cycling Integrity assessment Recommendations on fitness for service (e.g. critical crack length) Inspection guidelines Support in RCA Identification of most stressed locations Identification of damaging operation regimes Recommendations on mitigation measures (e.g. stress relief, avoiding certain operation regimes) Support on vibration issues Recommendations on structural modifications (e.g. reallocate resonances) Assistance in turbo-generator balancing procedures