1 / 18

pacifictechnologies.nz

Pipe Patrol – Leak detection and localisation system for Water Networks. www.pacifictechnologies.net.nz. info@pacifictechnologies.net.nz. PipePatrol - Leak Detection & Localistaion Principle of Extended Real-Time Transient Model - ERRTM Implementation Practical Example.

dunston
Download Presentation

pacifictechnologies.nz

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pipe Patrol – Leak detection and localisation system for Water Networks www.pacifictechnologies.net.nz info@pacifictechnologies.net.nz

  2. PipePatrol - Leak Detection & LocalistaionPrinciple of Extended Real-Time Transient Model - ERRTMImplementationPractical Example

  3. | WATERFLUX 3070 (V3) for internal use Potable Water Market Increasing water scarcity is posing an enormous challenges on water authorities to preserve water resources provide access to drinking water develop & upgrade water distribution networks reduce non-revenue water (NRW) As part of their strategy water companies are implementing >>

  4. Potable Water • Water Producer / Owner • Resource management • Water distribution networks: • Monitoring & controlling (part of control loop) • Reduce Non Revenue Water (NRW)- Align with pressure management systems - Leakage management • District Metering: Zoning for water balance • Revenue collection: • Billing based on actual water consumption

  5. Features For liquids, gases Single & Multi-products Uni and bi-directional metering Single & Pipeline Networks For pipelines longer then 3 km / 2 miles Compliant to API 1130 Technology Continuous monitoring Zero false alarms by leak pattern recognition Easy retrofitting using existing field instrumentation Interfaces to existing SCADA systems Highest sensitivity even under transient pipeline conditions through E-RTTM (Extended Real Time Transient Modelling) PipePatrol Leak Detection System

  6. The Technology of PipePatrol Reliable Pipeline Monitoring withE-RTTM-Technology • E-RTTM = Extended Real-Time Transient Model • Use a mathematical model to simulate Virtual Pipeline, incl. instrumentation wherever its needed • Calculate hydraulic profiles in real time • Creates decision values by comparing calculated values to measured values • Extended = Add Signature Analysis to find leaks and avoid false alarms P, T P, T „Virtual Pipeline“ (RTTM) F F Calculated, leakfreeflowrates Transient free decision values Signature Analysis Decision: Leak yes or no If leak, then calculate leak rate and position Signature Database PipePatrol E-RTTM 6

  7. Traditional leak detection system Outlet flow, measured by flowmeter Difference between inlet and outlet flow, not zero due to transient pipeline behaviour Inlet flow, measured by flowmeter

  8. PipePatrol Operator Station (screendump)

  9. PipePatrol E-RTTM Outlet flow, Measured by flowmeter (red) Calculated by RTTM (orange) Outlet flow residual, Difference between calculated and measured flow Inlet flow, Measured by flowmeter (blue) Calculated by RTTM (green) Inlet flow residual, Difference between calculated and measured flow

  10. Zero false alarms by leak pattern recognition This is a typical leak signature, Resulting in a leak alarm When residuals cross a predefined , threshold, leak pattern recognition Is used to distinguish between a true leak and a sensor drift This is not a leak signature but a typical sensors drift, resulting in a sensor warning

  11. PipePatrol Operator Station (screendump) No sensor warning No Leak Alarm Up-and-running 100 km long pipeline Batch tracking Hydraulic profiling Event logging User management

  12. PipePatrol hardware lay-out Pipeline Instrumentation Data communication PipePatrol T F F P T T P PLC slave PLC slave PLC master Operating Station (PC) Monitoring Station (PC) PipePatrol will work with existing field instrumentation and interface to any SCADA system

  13. What is a good Leak Detection System? PipePatrol E-RTTM 13

  14. PipePatrol PrincipleLeak Localisation • Simultaneous calculation of leak position with three different methods • Gradient Intersection • Time-of-Flight • Extended Time-of-Flight • Main advantages • Combines strengths, avoids weaknesses • Provides excellent overall accuracy p t t p0 p0 p1 p2 pL pL p0 t t0 t1 pL tL t2 tLeak tLeak 0 0 0 xLeak xLeak xLeak L L L x x x x1 x2 LeakLocalization

  15. Leak Detection & Localisation Example • Fluid Water • Pipeline 27km Diameter 1.0m • Flowrate 8500 m3/hr • Pressure 750kPag & Temperature 20degree • Flow, Pressure & Temperature @ Inlet & Outlet of pipeline • Communication Link via 3G Link

  16. System Performance • Leak Detection & Localisation 100% Availability during pumping and packing conditions & Steady State • Leak Rate Detection < 1% = < 85m3/hr • Leak Location Accuracy <0.1% = 18m • Time to leak Alarm < 2min • Number of False Alarms ZERO

  17. PipePatrol – Main Distribution Application Note Liquid 17

  18. Conclusion – PipePatrol • E-RTTM System • Gas & Liquid Pipelines / bi directional / multi pipeline networks • Fully functional in transient and steady state pipeline conditions • Expandable • Leak Detection & Localisation

More Related