An Innovative Approach to DMA. October 2015

Transcription

1 An Innovative Approach to DMA October 2015

2

3 Data gathering - Sensors, collection, transfer, and storage of operational data are cheaper than ever Industry trends support the need for measuring, collecting and analyzing operational parameters and events in the water distribution system There is a convergence between GIS, cartography, analytics and operational data that allows for easy visualization and interpretation of data Monitoring systems exist to support real time and strategic decision making for water operators

4 Data logging/telemetry Battery powered Pressure Flow Pressure + Others Water Quality + Others Hydrant installation translogger Integrated pressure + external A/D inputs Cl, ph, T & pressure/level External power (plug) Mixers, TRS Multi-purpose Wells

5

6

7

8 Reduces production / purchased water costs Reduced energy spend

9

10 Pressure Management Speed and Quality of repairs 4 Pillars of Network Management Best Practices Sectorization Pipe replacement and rehabilitation

11

12 DMA is one of the most recommended techniques to manage NRW in water distribution networks. The Characteristics are: Small engineered isolated zones dividing the water distribution network. Limited number of Inlets and Outlets, controlled and monitored continuously. Estimation or real-time consumption data. Objectives: Reduction of water losses (via data analyses to identify leaks and bursts). Monitoring and control of operational parameters Reduction in leakage run time

13 Daytime - Static sectors & the rest of the network Night time - Static & Dynamic sectors on

14 Total DMA Inflow (daily analysis)

15

16

17 Creating the Dynamic Zones How Dynamic Sectorization works DS allows, in a cost-effective way, calculation and monitoring of the minimum night flows into small sectors with no modification of normal distribution conditions or water quality. Water Inputs Valve 01:00 a.m. Valves closing Flowmeter Minimum night flow measurement Signals sent to Aquadvanced Valve 05:00 a.m. Valves opening Valve

18

19

20 Typical accuracy curves for different type of flowmeters

21 Pressure Management Speed and Quality of repairs 4 Pillars of Network Management Best Practices Sectorization Pipe replacement and rehabilitation

22 High pressure High pressure Main breaks High water loss Energy consumption Low pressure Low pressure Poor service in some areas Customer complaints Fire emergencies Water quality Regulatory Violations

23

24 PRV Booster Tanks Pressure Management Pressure Monitoring

25 Pressure Management Reduction of Excess Average and Maximum Pressures Conservation Benefits Water Utility Benefits Customer Benefits Reduced Flow Rates Reduced Frequency of Bursts and Leaks Reduced Excess or Unwanted Consumpti on Reduced Flow Rates of Leaks and Bursts Reduced and More efficient Use of Energy Reduced Repair and Reinstatem ent Costs, Mains & Services Reduced Liability Costs and Reduced bad publicity Deferred Renewals and Extended Asset Life Reduced Cost of Active Leakage Control Fewer Customer Complaints Fewer Problems on Customer Plumbing & Appliances

26 Creating insight from available data Network of sensors and meters SCADA Hydraulic model Laboratory information Geographical Information System AMR / AMI system Historian database Smart metering Energy use AQUADVANCED Operations Management System AQUADVANCED gives water operators a comprehensive view of performances in real time to efficiently manage their distribution network, while reducing operational costs controlling water quality and saving water and energy

27 Performance Monitoring Event Management Leakage Control Quality Monitoring Pressure Modulation Energy Management

28

29 GO 103 operational range compliance Active Events per zone PHD and MHD range compliance Map View of installed sensors

30 Large Main Break

31 Unacceptable levels of water loss High cost of water (energy) Produced Purchase from wholesaler / wheeling Frequent main breaks Pressure variances in the system (high or low) Pressure complaints Wanting to improve operational knowledge of the water system Reporting

32 Static Sectorization / DMA Requires engineered zones Hydraulic model verification Not real-time unless you have AMI Dynamic Sectorization Quick to implement Minimal hydraulic modeling required Less capital intensive than traditional DMA Maintains system redundancy and network design No need to measure meter consumption data Not complicated by syncing routine meter reading schedule with night flow meter recording at inputs No risk to water tightness in zones Can also use valve actuator for pressure management

33 Dynamic Sectorization An Innovative Approach to Traditional DMA Paul Meschino, P.E. Vice President Western Region (404) (c)