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Predictive Relay Technology: A Quiet Revolution in Electrical Systems

In an age of rapid technological advancement, Predictive Relay Technology stands out as a transformative innovation often overlooked. This technology allows for real-time monitoring and diagnostics of critical electrical systems, significantly reducing maintenance costs, downtime, and the risk of failures. By integrating advanced sensors and micro-computers, Predictive Relays provide early warnings and preventive measures, fundamentally shifting the approach from reactive to proactive maintenance. With proven success in various applications, this technology heralds a new era in electrical reliability and efficiency.

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Predictive Relay Technology: A Quiet Revolution in Electrical Systems

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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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