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Exitation System By Aqeel

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Exitation System by Aqeel

Exitation System by Aqeel

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    Exitation System By Aqeel Exitation System By Aqeel Presentation Transcript

    • Excitation System for an efficient and stable Power Plant and Network. Presenter: Aqeel Ahmed
    • Presenter Profile
      • Aqeel Ahmed
      • (Dy. General Manager Head of ABB Pakistan
      • Southern region)
        • Academics
        • Working Experience
        • Achievements
    • Contents
      • Excitation System and its place in a Power Plant
      • Functionality of Excitation System
      • Issues with Outdated Excitation Systems
      • Technology & functionality benchmark
      • Summary - Benefits of efficient Excitation System
      • Why Upgrade? A case Study
      • Conclusion and Actions
      • Inefficient excitation System results in
      • Inefficient Power Plant operation
      Shutdown of Excitation System / AVR = Power Plant Shutdown
    • Power Station SYNCHRONOUS GENERATOR TURBINE GOVERNOR EXCITATION TRANSFORMER 2 EXCITATIONSYSTEM GENERATOR BREAKER 1 1 SYNCHRONIZING 2 PROTECTION STATIC STARTER CONTROL SYSTEMS AC & DC AUXILIARY SYSTEMS STEP UP TRANSFORMER HV- BREAKER HV SYSTEM CONTROL ROOM PT’s & CT’s AUX. TRANSF. STAR POINT CUBICLE LV SWITCHGEAR
    • Functionality: Excitation systems
        • Providing variable DC current with short time overload capability
        • Controlling terminal voltage , MVAR and PF with suitable accuracy
        • Ensure stable operation with network and / or other machines
        • Contribution to transient stability subsequent to a fault.
        • Communicate with the power plant control system
        • Keep machine within allowed operating range
      Excitation systems/ A utomatic V oltage R egulators (AVRs) for Power Plants are managing: AVR Excitation Transformer Converter AC CB PT CT Controller Field Discharge
    • Technology & functionality benchmark
      • Smart redundant power converter solutions for all regulation, monitoring, protection and control functions
      • Power System Stabilizer (PSS)
      • Powerful Real Time Power Plant Simulator
      • Excitation Control Terminal (ECT),
      • Communication with all leading Power plant control systems
      • Customer Benefits
      • Prolonged maintenance-free operation
      • Easy to monitor and operate
      • Easy plant integration
    • Redundant and Specially designed Powerful Converters
      • Various redundancy concepts for control and power electronics
      • Power converter modules up to 4150 A and up to 6 modules in parallel
      • Insulation level to withstand stresses imposed to the field winding
      • Dynamic current sharing among parallel bridges
      • Maintenance in operation
      • Customer Benefits
      • Less outage time  High availability  Less production losses due to Power Converter failures => Higher profit
      • Less maintenance
    • Vast Power System Stabilizer solutions
      • Standard IEEE 2A/2B and Multiband PSS (IEEE 4B) covering most applications
      • Adaptive PSS for changing network topology
      • Integrated and stand-alone execution
      • System study and modeling capabilities
      • Customer Benefits
      • Wide range of solutions to improve network stability
      • Pre-calculation of PSS tuning
      • PSS update of existing plants
    • Powerful Real Time Power Plant Simulator
      • Factory testing with a Power Plant Simulator
      • Parameter optimizing prior to commissioning
      • AVR testing during machine overhaul
      • Customer Benefits
      • Less site tests and shorter commissioning time
      • Reduced no-load testing time and fuel costs
      • Easy training of plant staff
    • Excitation Control Terminal (ECT)
      • Local and/or remote control terminal
      • Stand-alone industrial PC with color touch screen
      • Modbus TCP communication
      • Password protected access levels
      • Selectable languages
      • Customer Benefits
      • Comprehensive data acquisition and representation
      • Independent data storage
      • Simple and fast troubleshooting
    • REDUCED OPERATION COSTS - Less maintenance time - Less outage time due to less component failures and efficient redundancies - Less spare parts cost - Reduced no load testing time and fuel costs HIGHER AVAILABILITY - P lant availability due to efficient redundancy & conservative margins - Support is always available BETTER CONTRIBUTION TO POWER SYSTEM STABILITY - Faster response time - Better stabilization of power oscillations Summary - Benefits of efficient Excitation System
        • SPARE PARTS - spare parts are not available
        • anymore - spare parts are very expensive
      • MAINTENANCE - the system needs often
      • maintenance work - maintenance lasts for several days
      • PERFORMANCE/RELIABILITY - the network is unstable - the system causes high no. of faults - insufficient support from the
      • system manufacturer
      Issues with Out dated Excitation systems
    • Why upgrade? A case study
    • Conclusion and Actions
      • Upcoming Power Plants
      • Investors need to ask the Power Plant supplier, which Excitation System is offered in the EPC package and the local support of the system.
      • Existing Power Plants
      • Get audit support from quality manufacturers about the performance of the excitation system and comparison with the new systems