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Predictive Relay Technology

Predictive Relay Technology. The Silent Revolution by Mario Kuisis. In the world of technology. Significant milestones are reached Sometimes with great fanfare Sometimes almost going unnoticed But always with a lasting impact. Predictive Relay Technology. Represents such a milestone, and

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Predictive Relay Technology

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  1. Predictive Relay Technology The Silent Revolution by Mario Kuisis

  2. In the world of technology Significant milestones are reached • Sometimes with great fanfare • Sometimes almost going unnoticed • But always with a lasting impact

  3. Predictive Relay Technology • Represents such a milestone, and • Is in danger of going unnoticed, but • Deserves more attention! Why?

  4. Cost savings and efficiency Brought about by • Reduced day-to-day maintenance costs • Reduced plant downtime • Prevention of failures

  5. How? • By embracing predictive diagnostics in the form of Predictive Relay Technology • To understand a predictive relay, let’s use an illustration close to home

  6. What is a Predictive Relay? • Imagine you are in good health . . . • with a permanently connected micro ECG, • also monitoring your temperature, breathing, perspiration rate, etc., • with micro-computer aided diagnostics, • and GSM contact to your heart specialist. • What are your chances of heart failure?

  7. What is a Predictive Relay? Chances of heart failure in this situation • are certainly minimised, more likely • totally eliminated, provided • the specialist reads the danger signals • gives you adequate warning and • good advice for corrective action • which you take seriously.

  8. What is a Predictive Relay? The combination of • the micro ECG machine • the sensors for temperature, etc. • the micro-computer • the diagnostic software & specialist • the GSM modem • together constitute a Predictive Relay

  9. What is a Predictive Relay? Definition of a Predictive Relay • A predictive relay continuously monitors condition together with influencing operational & environmental parameters which it stores, analyses, trends and interprets in order to diagnose the present status and make a prognosis of future condition. If life-threatening deterioration is predicted it communicates programmed alarm or preventative action.

  10. Relating this to power station plant • Electrical machines also have “hearts” • Recent research has produced the equivalent of the ECG machine and diagnostics software • Robust micro-computers with extensive data storage and processing power are common • Sensor technology has advanced equally • Communication is possible almost anywhere

  11. This means • Predictive relay technology is now a commercial reality for most items of critical electrical power station plant • This includes • Generators • Motors • Transformers • Switchgear • Peripheral MV, HV & EHV equipment

  12. Why is this so important? • It is customary to invest heavily in protective relays • No electrical system is built without them • But these serve only to limit damage • They are a form of insurance • We assume the fault “will happen” • Why not apply the same approach to prevent the fault in the first place?

  13. A revolutionary solution • Because it has never before been possible in the form of a Practical, Economic Device! • Until now, this has been the preserveofcostly, risky and complex special periodic tests of limited value requiring experts to interpret

  14. How does this help? • The diagnostics available from the device pinpoints the defect • Limited repair or refurbishment is quicker and cheaper than complete repair or replacement – sometimes nil! • Downside system damage is prevented • System uptime is not compromised

  15. Why has it not been done before? The technological hurdles are enormous • Measurement sensitivity • Extreme environments • High level data processing and storage • Advanced signal processing techniques • Need for compatibility with plant systems

  16. Why has it not been done before? • Ability to measure all parameters • Need for flexible communication options • Need for robustness • Need for absolute reliability • Calibration issues • Need for simplicity These hurdles have been overcome!

  17. Status of the technology • Predictive relay technology is well established in a large number of 1st world countries • Benefits have been proven through identification of a large number of incipient faults which were exposed on pre-emptive removal and inspection

  18. Illustration • Examples: predictive relay applications

  19. How to take advantage First and foremost, a new mindset • Don’t just limit fault damage with a protective relay • Prevent the fault with a Predictive Relay

  20. Summary • A revolutionary technological milestone has been reached • Faults on key power station plant can now be predicted and avoided • This is achieved by supplementing Protective Relays with Predictive Relays • The technology is fully commercialised, proven and readily available

  21. Thank you ?

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