0041 21 691 45 13 info@powervision-eng.ch

 

Innovative Real-Time Simulation Monitoring System for Hydro Power
Plant Transient Survey

 

Introduction

Simulation of a hydro plant by ‘cloning’ makes it possible to detect undesirable phenomena, such as penstock or gallery overpressures, head loss increases, decreases in efficiency, surge tank limits, start-up and shut-down issues, unexpected cavitation and possible water column separations, air intake, and unwanted valve closures. Furthermore, a clone is able to minimize the risk of potential imminent harmful behaviour of the plant, by generating so-called ‘ahead of-time simulation monitoring’ (ATSM) alarms, based on a series of instantaneous simulations of any potential near-future behaviour of the plant. By combining RTSM and ATSM in real-time, it is believed that the newly developed system, known as Hydro-Clone, can be a valuable numerical asset for hydro plant owners to improve powerplant safety.

Power Vision Engineering launch HYDRO-CLONE: an Innovative Real-Time Simulation Monitoring (RTSM) System for Hydro Power Plant Transients Survey for:

    1. Water Hammer / Surge Tank Survey
    2. Real-Time Simulation Monitoring (RTSM)
    3. Ahead of Time Simulation Monitoring (ATSM)
    4. Detection of Hydraulic / Electrical Anomalies
    5. Estimation of Non-Measureable Quantities
    6. Anticipation Power Plant Damage (fatigue, buckling)

    Hydro-Clone comprises:

    A calibrated SIMSEN model of the HPP, operated in Real-Time and using in-situ measured boundary conditions including:

    • hydraulic circuit: galleries, surge tanks, valves, pressure shaft, pumps and turbines (Pelton, Francis, Pump-Turbine, Kaplan)
    • mechanical inertia and coupling shaft
    • electrical system: motor-generator, transformer, circuit breakers, transmission lines

    A real-time monitoring system performing the following tasks:

    • Real-Time acquisition and transfer of in-situ measured boundary conditions and quantities to SIMSEN model
    • data processing and diagnosis of the power plant health
    • provide pre-defined appropriate alarms based on both real-time (RTSM) and ahead-of-time (ATSM) analysis
    • communication with archival storage system

    A tailor-made archival storage and related database system enabling:

    • to archive simulated and measured quantities
    • to display and analyse previous results
    • to contingence alarms
    • to update and enhance the clone functioning

    Features

    A calibrated SIMSEN model of the HPP, operated in Real-Time and using in-situ measured boundary conditions including:

    • Hydraulic circuit: galleries, surge tanks, valves, pressure shaft, pumps and turbines (Pelton, Francis, Pump-Turbine, Kaplan)
    • Mechanical inertia and coupling shaft
    • Electrical system: motor-generator, transformer, circuit breakers, transmission lines

    A real-time monitoring system performing the following tasks:

    • Real-Time acquisition and transfer of in-situ measured boundary conditions and quantities to the digital clone
    • Data processing and diagnosis of the power plant health
    • Provide pre-defined appropriate alarms based on both real-time (RTSM) and ahead-of-time (ATSM) analysis
    • Communication with archival storage system

    A tailor-made archival storage and related database system enabling:

    • To archive simulated and measured quantities
    • To display and analyse previous results
    • To log alarms
    • To update and enhance the clone functioning

     

    Purposes

    Real-time Water Hammer/Surge Tank/Unit transient Survey

    Detection of abnormal pressure transients prior to reach admissible limit:

    • Significant deviation between measurement and simulation
    • Identification of unappropriated sequence settings
    • Identification of possible hydroacoustic resonances

    Detection of anomalies:

    • Air admission
    • Unexpected valve closure
    • Flow obstruction by external body
    • Water column separation
    • Transducer failure/dysfunction

    Monitoring of non-measurable quantities:

    • Pressure and discharge in headrace/tailrace tunnels
    • Pressure and discharge along the penstock
    • Torque, current and voltages

    Deviation of hydropower physical characteristics:

    • Head losses increase
    • Turbine/generator efficiency drop
    • Closing law drift
    • Ahead-of-time projections of the state of the system
    • (Decision Support tool, Alert Awareness, what-if…?)

    Anticipation of potential power plant damage:

    • Fatigue evaluation
    • Buckling risk

     

    Download PDFs

    PDF Hydro-Clone leaflet (2.1 Mo)

    PDF Paper on Hydro-Clone (3 Mo)

     

    Need more information about details and pricing?

    Contact Mr. Christophe Nicolet: (french and english speaking)
    Phone: +41 21 691 45 13
    info@powervision-eng.chg.ch

     


    Power Vision Engineering Sàrl
    Chemin des Champs Courbes 1
    CH-1024 Ecublens
    Switzerland