Improving efficiency of water utilities: practical examples

Transcription

1 Improving efficiency of water utilities: practical examples Slavco Velickov, PhD - Water Industry Director EMEA Geospatial Forum, Rotterdam, May Bentley Systems, Incorporated 2016 Bentley Systems, Incorporated

2 Agenda 1.Bentley at a glance 2.Business drivers (trends) in the Water Industry 3.Water solutions overview 4.Improving efficiency, examples: 1. Active Leakage Management (finding leakage hot-spots) 2. Geospatially enabled Asset Management (leakage and break records analysis) 3. Pumping scheduling and pressure optimization (saving water and energy) 5.Take away message 6.Contact information Bentley Systems, Incorporated

3 Improving Quality of Life Bentley Systems, Incorporated

4 Water and Wastewater Business Drivers Bentley Systems, Incorporated 2016 Bentley Systems, Incorporated

5 Water Utilities Drivers Leakage Reductions Energy Efficiency Pressure Control Water Safety (Quality) Pipe Renewal Planning Master Planning Real-time Operations Emergency Response Staff Capacity Development and Resources Bentley Systems, Incorporated

6 Wastewater / Stormwater Similar Drivers as for Clean Water Prevent CSO / SSO with Models Master Planning Water Quality Analysis Efficiency & Skills Inspection/Condition Assessment Implement BIM / ISO WWT Plant Operation and Efficiency Bentley Systems, Incorporated

7 Everyone s Drivers Save Water, Money, Time, Energy, Environment Bentley Systems, Incorporated

8 Planning and Analysis Scheduled and Unscheduled Maintenance Information Management Operations and Emergency Response Bentley Water Solutions: Addressing the Life Cycle of the Infrastructure Identify Repair, Replace, Expansion Water & Wastewater Asset Recording Design and Estimate Engineering Approval Construction Bentley Systems, Incorporated 2016 Bentley Systems, Incorporated

9 Water Industry Solutions Offerings AutoCAD ArcGIS Industry Framework Modeling & Analysis Framework Bentley Map / Mobile Bentley Open Utilities Water / WW GIS & AM Bentley AssetWise (Amulet) MicroStation WaterGEMS / CAD Hammer CivilStorm / PondPack StormCAD / HEC-Pack SewerGEMS/ CAD sishyd (GasAnalysis ) Modelling / analytical products Web clients Web Publishing GeoSpatial Server, ProjectWise & eb Interoperability Connectors Enterprise Connectors Data Files Data Files w/ Database Linkages Spatial Databases Web Services Spatial Documents Business Documents Ancillary Files w/ RDBWS Proprietary GIS Databases Enterprise Data Stores SCADA & Loggers Bentley Systems, Incorporated

10 Bentley Haestad Product Line 30 years 130,000 users 170 countries Acquired by Bentley in 2004 WATER SEWER STORM (flood) Other WaterGEMS. Water distribution modeling with geospatial integration WaterCAD. Water distribution modeling and design Darwin Designer. Network design automation Darwin Calibrator. Model calibration optimization Darwin Scheduler. Energy efficiency optimizer Pipe Renewal Planner. Asset investment planning tool HAMMER. Transient flow analysis and modeling SCADAConnect. Supervisory and control data integration SewerGEMS. Urban sewer modeling with GIS integration SewerCAD. Sanitary sewer design and modeling CivilStorm. Stormwater management and dynamic modeling StormCAD. Storm sewer design and modeling PondPack. Detention pond design and analysis HEC-Pack. River basin modeling, reservoir optimization CulvertMaster. Culvert design and analysis FlowMaster. Hydraulics calculator Amulet. Real-time forecasts and dashboards platform WaterObjects..Net development environment Mohid. 2D / 3D Catchment and costal modelling solution Bentley Systems, Incorporated

11 Bentley Reality Modelling for Water Industry ContexCapture Photos to 3D models Buildings, Plants Ground Infrastructure (asset conditions) LumenRT Visualize and Communicate Infrastructure Models, Designs, Model Results Bentley Systems, Incorporated

12 Example: Paris 500 km of sewers mains REQUIREMENT SOLUTION RESULT Model and refresh a sewer infrastructure (500km long) including pipes, cables and other equipment Multi-directional camera system (like Trimble v10) + specific lighting system + Smart3DCapture Ultimate Photorealistic 3D model, helping users to detect and extract structure components from the mesh and point cloud Bentley Systems, Incorporated

13 1) Water Loss Leakage Reduction by pressure management, hydraulic modelling, measured data and optimization techniques Bentley Systems, Incorporated

14 Remediating Water Loss is Complex 14 It s impossible to find and fix all leaks (economic level of leakage) Partial implementation of a water loss plan is highly likely to fail Coordination between all components of a water loss program is required Many practitioners make common mistakes- they may have the false impression that each time a leak is repaired, physical loss is reduced by the volume saved Vermersch and Rizzo Source: IWA s Water21 Magazine, April Bentley Systems, Incorporated (Courtesy Dr. Thomas Walski)

15 Infrastructure Management Pressure Management Strategy: A Long-term Approach with Immediate [short-term] Benefits 15 Implement IWA best / good practices Unavoidable Real Loss Speed and Quality of Repairs Replacing pipes with least impact on customers Economic Level Real Loss Current Annual Real Loss Volume Active Leakage Control Detecting and fixing leaks Replacing/installing meters (DMAs) Risk-based asset management for maximum return Bentley Systems, Incorporated

16 Current Practice 1. Assessment water balance or water auditing based upon water infrastructures physical data and some statistics 2. Pressure Management Divide the network in Pressure Zones and DMAs (how detailed) Use hydraulic model for PRVs including pumps optimisation Install PRVs to manage MNF 3. Active Leakage Detection Sounding for leaks Step-testing Acoustic loggers (noise correlators) Smart balls Use hydraulic model and measured (Scada) data Bentley Systems, Incorporated

17 Bentley Integrated Framework: Leakage Detection & Model Calibration 17 WaterGEMS (Darwin Calibrator) Bentley Systems, Incorporated

18 Example Case: system conditions 18 DMA system model owned by UUW 20 km pipelines 400 properties 5 pressure loggers and one flow meter Bentley Systems, Incorporated

19 Example: previously detected pipe bursts 19 Burst A aa Burst B aa KEY DMA Boundary Posi-tect prediction Leak located Distance from prediction Mains Material BURST A <50m 150mm Ductile Iron BURST B Distance from prediction Mains Material 150m 8 Cast Iron Bentley Systems, Incorporated

20 Example Case: results comparison (sensitivity) 20 Burst A & B Bentley Systems, Incorporated

21 Example Case : ROI savings 21 Saving > 210,000 Euro / year Burst A Burst B 30m 3 /hr reduction Bentley Systems, Incorporated

22 Video: WaterGEMS leakage detection Bentley Systems, Incorporated

23 2) Capital Investment Planning (pipe renewals) Water Mains Asset Management - leakage and break records geospatial risk analysis Bentley Systems, Incorporated

24 Example: Pipe Assets Renewal Planning Asset Inventory/Leak History 1 Bentley Open Utilties Prioritize 2 Bentley WaterGEMS Manage records, Report, Visualize, Schedule 4 AssetWise (eb) / GWP Cost Estimate 3 Bentley OU Expert Designer Bentley Systems, Incorporated

25 Manage Leak Records 25 Most utilities keep leak records Many forms Paper records Databases Spreadsheets Shapefiles Work orders Import to Bentley Water Need x-y coordinates (georeference) Bentley Systems, Incorporated

26 Spatially View Leak Locations Bentley Systems, Incorporated

27 27 Cluster Thematically Bad Pipes Bentley Systems, Incorporated

28 Analyze Patterns Diameter, in. Breaks Break Rate, break/yr/km Bentley Systems, Incorporated

29 Look for Relationships Circumferential breaks Longitudinal breaks Corrosion holes Cast Iron Ductile iron PVC Steel Bentley Systems, Incorporated

30 Bentley Systems, Incorporated Thematic Maps & Reports

31 WaterGEMS: Pipe Renewal Planner Tool workflow Bentley Systems, Incorporated

32 Pipe Renewal Planner Results Bentley Systems, Incorporated

33 Bentley Systems, Incorporated Risk Map: Prioritization of Pipe Replacements

34 eb Report, Visualize, Schedule Renewals Customizable Dashboard None Technical Presentation Easy to read, easy to use Integrated Spatial Map Integrate with Enterprise Workflows Visualize and Approve Bentley Systems, Incorporated

35 Bentley Systems, Incorporated Or Publish with Geo Web Publisher (mobile as well)

36 3) Pumping Scheduling Optimizing Pumps Operation for Minimum Energy Usage in Water / Wastewater / Stormwater Systems Bentley Systems, Incorporated

37 Energy Consumption Water is pumped throughout system Adequate pressure is maintained by pumping Pumping results in high energy consumption CO 2 = ExC intensity Carbon Intensity (in pound) U.S. Electric Grid (per kwh) National Energy Consumption Projections for Public Water Supply 0.12 Natural Gas (per cubic foot) Fuel Oil (per gallon) Liquefield Pedro Gas (per gallon) Bentley Systems, Incorporated

38 Which pump is wasting energy? Bentley Systems, Incorporated

39 39 Wire Power In Brake (Motor) Power Water Power Added Overall (wire-to-water) Efficiency = Water Power/Input Power Pump Efficiency = Water Power/Motor Power Bentley Systems, Incorporated

40 Pump Power and Efficiency 40 Water Power (hp) = Q * h * S / efficiency Wire-to-Water Efficiency = Pump x Motor x Drive Efficiency Bentley Systems, Incorporated

41 Reduce Energy by Optimal Pump Scheduling What to schedule Which pump is on duty When pump is on duty What speed is on duty Which Tanks to utilise Goal Minimize energy consumption Minimize total energy cost Supply requirements Water demand and hydraulics Manage pressure constrains (water loss) Deliver water quality Bentley Systems, Incorporated

42 Formulation (mathematical optimization) Search for: Minimize: Subject to: H C h v min min h i 1,2,..., N, t 1 T N p C p p 1 i, t ps,..., h i, t v j, t h v max max min p max Where h i,t is the target hydraulic head of pump station i at time t v j,t is the flow veolcity of pipe j at time t ω p is the relative speed factor for pump p, N ps is the number of pump stations, C p is the energy cost of pump p, N p is the number of pumps, C is the total energy cost of the pumps, h min and h max are the minimum required and maximum allowed hydraulic head, v min and v max are the minimum required and maximum allowed flow velocities Bentley Systems, Incorporated

43 Bentley Systems, Incorporated Energy Cost Analysis Tool

44 Bentley Systems, Incorporated Darwin Scheduler

45 Case Study (Water Utility in UK) DMZ system 57 Ml/day 11 pump stations and 9 tanks Energy cost: 330K/year Recorded daily energy cost: 912 Modeled daily energy cost: Bentley Systems, Incorporated

46 Electricity Tariff Pattern 1.2 Price Pattern Factor :00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 Time Bentley Systems, Incorporated

47 Pump Scheduling Optimization Optimization criteria One hour control interval Tank minimum level is set to 20% of depth Tank maximum level is set to 90% of depth Meet minimum pressure requirements at PRVs and critical points Results converted to control rules, e.g. Rule 100 IF SYSTEM CLOCKTIME <= 8:00 AM OR SYSTEM CLOCKTIME >= 10:00 PM AND TANK BUTa2 LEVEL BELOW 5.73 THEN PUMP PILWTH STATUS IS OPEN ELSE PUMP PILWTH STATUS IS CLOSED Bentley Systems, Incorporated

48 Energy Cost Comparison Pump Existing controls Optimized controls ID Pump utilization (%) Daily cost ( ) Pump utilization (%) Daily cost ( ) X _ X _ X _ X _ X _ X241998C_ X _ PILWTH NEWMRKT Total cost( ) Immediate saving is 100,000 (29% of original energy cost) By optimizing pumping hours and better supply from storage sources Bentley Systems, Incorporated

49 Optimized Pump Controls Pressure points and Tank levels Pump flows and controls Bentley Systems, Incorporated

50 Take Away Message o Improving Efficiency is a part of a lifecycle asset management practice in Water Utilities and Consulting Ecosystem o Integrated Geospatial, Hydraulic Modeling and Optimization technology can help: o Detecting leakage hotspots o Pipe renewal planning process o Pumping scheduling and optimal pressure and energy management (including CO2 footprint) o From dull pipes towards Smart Water Networks for real-time modelling, decision making and emergency response Bentley Systems, Incorporated

51 Contact Information and Resources communities.bentley.com Bentley Systems, Incorporated