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Improved Network Operations Through Computer Modeling and Support System
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Lindell Ormsbee, P.E., Ph.D., Sebastian Bryson, P.E. Ph.D.
Scott Yost, P.E., Ph.D
University of Kentucky
Abdoul A. Oubeidillah, Ph.D., Andrew N.S. Ernest, Ph.D., P.E.,
Joseph L. Gutenson
University of Alabama
Jim Uber, P.E., Ph.D, Dominic Boccelli, Ph.D
University of Cincinnati
Srini Lingireddy, Ph.D, KYPIPE, LLC.
www.uky.edu/WaterSecurity
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Workshop Agenda • 1. Project Overview (UK) – 15 minutes
• 2. Overview of Project Website (UK) – 15 minutes
• 3. Overview of Visualization Models (UK) – 30 minutes – Graphical Flow Model
– Pipe Break Model
• 4. Off-line network modeling (UK) – 10 minutes
• 5. Overview of SCADA (UK) – 25 minutes
• 6. Overview of Sensor Placement (UK) – 25 minutes – Sensor Placement Model
• 9. Wrap up discussion – 30 minutes
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Workshop Agenda
• 1. Project Overview/Objectives • 2. Overview of Project Website
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off-line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling – Real-time predictive analytics: process and benefits
– Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 3
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Project Goal • To assist water utilities in improving the
operation of their water distribution systems through a better understanding of the impact of water distribution system hydraulics and flow dynamics on operational decision making:
– Normal operations
– Emergency operations
• Natural events
• Man made events
Knowledge Tools Research
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Hydraulic Sensors
Telemetry/Communication Systems
Spatial Visualization Model
Off-Line Hydraulic Model
Off-Line Water Quality Model
Supervisory Control and Data Acquisition (SCADA)
On-Line Hydraulic Model
On-Line Water Quality Model
Real Time Operations
Water Quality Sensors
Water Distribution System Operations Hierarchy
SCADA Database
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Project Objectives
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SPATIAL VISUALIZATION
OF NETWORK
COMPONENTS
OFF-LINE COMPUTER
MODELS
ON-LINE COMPUTER
MODELS
SUPERVISORY
CONTROL AND DATA
ACQUISITION (SCADA)
• Develop knowledge and tools to support water distribution system operations
• Develop a decision support system
– Operational guidance
– Operational toolkit
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WDS Operational Objectives
• Maintain Adequate Pressures
• Minimize Water Quality Problems
• Minimize Operational Cost
• Schedule Maintenance
• Emergency Response
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Operational Questions
• How long will it take to fill or drain my tanks under: – Normal conditions?
– Emergency conditions?
• When and how long should I run my pumps to minimize cost?
• Can I improve my water quality by changing my operations?
• How will my system perform if I have to close several pipes?
• Which valves do I need to close to isolate a pipe break? What are the impacts on pressures and flows?
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Operational Support
• Supervisory Control and Data Acquisition System
• Computer Models
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• Why do we need a monitoring/ control system?
– Normal Operations
– Pipe Breaks/Leaks
– Pump/Tank Failures
– Contamination Events
– Maintain Energy Efficiency
– Minimize Operational Costs
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Need for SCADA
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Need for Models
• Graphical representation of system
– Network schematic
– Background map
• Infrastructure database
• Customer database
• Computer analyses
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website • 3. Overview of Visualization Models
– Graphical Flow Model
– Pipe Break Model
• 4. Off-line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 9. Wrap up discussion
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Water Distribution System Operations Website
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• PURPOSE: To assist water utilities with designing a monitoring/control system.
• Operational Applications
– Normal Operations
– Emergency Response Management
– Water Quality Management
– Energy Management
– Event Detection
www.uky.edu/WaterSecurity
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WDS Operational Decision Support Tool
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User Defined
Decisional Process
User Assisted
Decisional Process
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User Defined
Decisional Process
User Assisted
Decisional Process
User Defined Decisional Process (Guidance)
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User Defined
Decisional Process
User Assisted
Decisional Process
User Assisted Decisional Process (toolkit)
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WDS Toolkit
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 5. Overview of SCADA
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling
– Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 19
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SCADA
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SPATIAL VISUALIZATION
OF NETWORK
COMPONENTS
OFF-LINE COMPUTER
MODELS
ON-LINE COMPUTER
MODELS
SUPERVISORY
CONTROL AND DATA
ACQUISITION (SCADA)
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SCADA
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SCADA SYSTEMS GUIDANCE
• Potential SCADA Uses
• SCADA Functions
• SCADA Survey
• SCADA Components
• Supervisory Control Schemes
• SCADA Implementation Process
• SCADA Sensor Location
• SCADA Sensor Placement Decision-
Making Sequence
• SCADA CWS Sensor Placement
Optimization Program Inputs
• SCADA Sensor Placement
Guidance
• SCADA Sensor Placement
Software
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SCADA Functions
• Data Acquisition (Collection)
• Data Communication (Monitoring)
• Data Presentation
• Equipment Control
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SCADA Components
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• Sensors and Controllers
• SCADA Interface Units
• Communications Network
• SCADA Master
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Hydraulic Sensors
• Types of Hydraulic Sensors
– Pressure Sensors
– Flow Sensors
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Hydraulic Sensors
• Sources of Hydraulic Sensors:
– ABB, abb.com
– Ashcroft, ashcroft.com
– Holykell, holykell.com
– Honeywell, honeywell.com
– Keyence, keyence.com
– Truck, truck-usa.com
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Water Quality Sensors
• Types of Water Quality Sensors
– Chlorine Residual Sensor
– TOC Sensor
– Turbidity Sensor
– Conductivity Sensor
– pH Sensor
– ORP Sensor -
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Water Quality Sensors
• Sources of Water Quality Sensors
– ABB, abb.com
– GE, ge.com
– Hach, hach.com
– Siemens, siemens.com
– Emerson, emersonprocess.com
– Yokogawa, yokogawa.com/us
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Picture of Water Quality Control Station
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Control Equipment (Pumps)
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Control Equipment (PRVs)
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Control Equipment (Control Valves)
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SCADA Interface Units
• Remote Telemetry Units (RTU1s)
• Remote Terminal Units (RTU2s)
• Programmable Logic Controllers (PLCs)
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• Field interface unit compatible with the SCADA system language
• Convert electronic signals received from field sensors (i.e. pressure sensors, tank level sensors, etc.) into protocol and transmit data to the SCADA Master
• Typically consist of a box which contains a microprocessor and a database
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RTU: Remote Telemetry Unit
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• Field interface unit compatible with the SCADA system language
• Convert electronic signals received from field sensors (i.e. pressure sensors, tank level sensors, etc.) into protocol and transmit data to the SCADA Master
• Typically consist of a box which contains a microprocessor and a database
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RTU: Remote Terminal Unit
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• Basic alternative to RTU; higher cost
• Typical components include – CPU
– Memory
– Control Software
– Power Supply
– Input/Output Modules
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PLC: Programmable Logic Controller
• A digital computer used to monitor and control certain aspects of equipment such as motor speed, valve actuation, and other functions
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SCADA
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2 Supervisory Control Schemes
Hierarchical Control Distributed Control
Control
Control
Control
RTU
RTU
RTU
Monitor Instruct
Monitor Instruct
Monitor Instruct
PLC
PLC
PLC
“Supervisory Control and Data Acquisition”
Control
Control
Control
Control
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Control Schemes: Advantages/Disadvantages
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Hierarchical Control Distributed Control ADVANTAGES:
• Low cost (RTUs vs. PLCs)
DISADVANTAGES:
• Inability to operate in case of communication failure • Potential problems from data transmission rates and computer scan rates
ADVANTAGES:
• Normal operations maintained despite communications failure • Potential differences are minimized for scan and transmission rates
DISADVANTAGES:
• High cost (PLCs vs. RTUs)
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• Why do we need a monitoring/ control system?
– Normal Operations
– Pipe Breaks/Leaks
– Pump/Tank Failures
–Contamination Events – Maintain Energy Efficiency
– Minimize Operational Costs
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Need for SCADA
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EPA Water Security Initiative
• The Water Security (WS) initiative is a U.S. Environmental Protection Agency (EPA) program that addresses the risk of contamination of drinking water systems.
• EPA established this initiative in response to Homeland Security Presidential Directive 9, under which the Agency must “develop robust, comprehensive, and fully coordinated surveillance and monitoring systems, including international information, for…water quality that provides early detection and awareness of disease, pest or poisonous agents.”
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EPA Water Security Operational Phases
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EPA Water Security Initiative
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Computer Models
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SPATIAL VISUALIZATION
OF NETWORK
COMPONENTS
OFF-LINE COMPUTER
MODELS
ON-LINE COMPUTER
MODELS
SUPERVISORY
CONTROL AND DATA
ACQUISITION (SCADA)
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Computer Models • Computer models for network modeling have
been around since the late 1950s.
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Potential Model Uses • Static hydraulic analyses
– Flows and pressures in the system – Fire flow tests – Valve closure
• Dynamic hydraulic analyses – Tank turnover – Pump operations – Emergency response
• Water Quality analyses – Age analysis – Chlorine residual analysis – Tracer analysis
• Real Time Analysis – Real Time Operations – Emergency Response
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Water Distribution System Model
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Topologic Information
Water Distribution System Model
Network Layout
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Topologic Information
Maps
Water Distribution System Model
Network Layout
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Topologic Information
Maps
KIA GIS Data
Water Distribution System Model
Network Layout
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Elevation Information
Water Distribution System Model
Elevations
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Elevation Information
Maps
Water Distribution System Model
Elevations
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Elevation Information
Maps
KY GIS DEM Data
Water Distribution System Model
Elevations
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Topologic Information
Pipe Information
Elevation Information
Maps
KIA GIS Data
KIA DEM Data
L, D
Water Distribution System Model
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Topologic Information
Pipe Information
Elevation Information
Historical Records
Maps
KIA GIS Data
KIA DEM Data
L, D
Water Distribution System Model
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Topologic Information
Pipe Information
Elevation Information
Historical Records
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
L, D
Water Distribution System Model
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Topologic Information
Pipe Information
Elevation Information
Historical Records
Pipe Roughness
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
C
Water Distribution System Model
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Topologic Information
Pipe Information
Elevation Information
Historical Records
Pipe Roughness
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
C
Water Distribution System Model
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Topologic Information
Pipe Information
Elevation Information
Historical Records
Pipe Roughness
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
C
Water Distribution System Model
C-Factor Tests
C = 4.73 Q L 0.54
H f 0.54 D 2.63
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Topologic Information
Pipe Information
Elevation Information
Component Information
Historical Records
Manufacturer Data
C-Factor Tests
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model
Reservoir
Tank
Valve
Pump
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Topologic Information
Pipe Information
Elevation Information
Component Information
Historical Records
Manufacturer Data
C-Factor Tests
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model Billing
Information Production Information
Nodal Demands
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Topologic Information
Pipe Information
Elevation Information
Component Information
Historical Records
Manufacturer Data
C-Factor Tests
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model Billing
Information Production Information
Operational Scenarios
SCADA Operational Staff
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Topologic Information
Pipe Information
Billing Information
SCADA Operational
Staff
Production Information
Model Database
Elevation Information
Component Information
Historical Records
Manufacturer Data
Pipe Roughness
User Interface
Literature C Values
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model
C-Factor Tests
Nodal Demands
Operational Policies
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Topologic Information
Pipe Information
Billing Information
SCADA Operational Staff
Production Information
Model Database
Elevation Information
Historical Records
Fire Flow Tests
Computer Algorithm
User Interface
Model Calibration
Pressure/Tank Data
Tracer Test Data
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model
Component Information
Manufacturer Data
Pipe Roughness
Literature C Values
C-Factor Tests
Nodal Demands
Operational Policies
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Q = 29.8 C D2 P0.5
where: D (inches), P (psi), Q(gpm)
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Topologic Information
Pipe Information
Billing Information
Production Information
Elevation Information
Historical Records
Model Results
Computer Algorithm
User Interface
Maps
KIA GIS Data
KIA GIS Data
KIA DEM Data
Water Distribution System Model
Model Database
Water Quality Analysis
Pipe Break Analysis
Energy Analysis
Steady State Analysis
Extended Period Analysis
SCADA Operational Staff
Component Information
Manufacturer Data
Pipe Roughness
Literature C Values
C-Factor Tests
Operational Policies
Nodal Demands
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Additional Resources
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SPATIAL VISUALIZATION OF NETWORK COMPONENTS
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SPATIAL VISUALIZATION OF NETWORK COMPONENTS
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Graphical Flow Model User Interface
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Pipe and Node Data
Menu
Map Window
Map Function
Menu
Map Setting Options
File and Program Options
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Program Command Bar
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Map Text Mode Map Layout Mode
Fixed Mode 1 – Cannot move or add nodes Fixed Mode 2 – Cannot move/Can add nodes
Select Multiple Nodes and Pipes Select Nodes/Pipes using a polygon
Attach a note to the map Clear selections
View data tables Refresh map
Views
Redo last map change
Zoom and pan functions
Shift map window functions
Add north arrow to map
Undo last map change
Zoom and pan functions
Shift map window functions
Map Function Menu
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Network Data Management
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You can also use GFM to manage facilities data If you click on the Table icon, the program will take you to a table that contains information about your system
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These are the parameter values that have been read in From the KIA database. However, you can change them if you want.
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These results can also be viewed from the Map menu. In order to “turn on” a particular set of data, first go to the Map Settings Tab and then click on the Labels tab. Now you can use the drop down menu to select a particular type of data. Here we have selected diameter data. To show this data on your map, make sure to click on the box next to the selected parameter (e.g. Diameter as shown) Now, click on the Map tab to take you back to the map viewing area.
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Here is the map view with all the pipe diameters (in inches) shown.
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Hydraulic Model
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Model Results
Display Flowrates
Display Pressures
Display Pressures Contours
Print Out Report
1
2
4
3
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Generating a Flow Analysis
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Analyze Error Check Analysis Inventory/Costs Quick Results
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Flow analysis options are provided in a menu after the run completes
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Pipe flowrates displayed by yellow boxes.
Nodal system inputs/outputs displayed by blue boxes.
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Pressures at System Nodes Displayed by
Labels
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Pressure Contours (Hatch)
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Result of Screen Capture
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Elements of a Flow Analysis Report
1. File name of the network
2. Regulatory valve data and properties
3. Pipeline data and properties
4. Node data and properties
5. Regulatory valve flow analysis results (upstream and downstream pressure and through flowrate)
6. Pipeline Flow analysis (flowrates)
7. Node flow analysis results (external demand, hydraulic grade, pressure head and node pressure in psi)
8. Summary of system inflows and outflows
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Pipe Break/Contamination Extent Visualization
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What will be the final disposition of the flushed water? Where will the
water flow?
What is the associated volume of contaminated water? Number of
customers? Total demand?
If the system should be flushed, can the “upstream” part of the system
be used or does the system need to
be isolated and flushing water
pumped through a hydrant? If so, which hydrant?
If the system needs to be isolated, using what valve(s)?
What critical pieces of infrastructure are impacted?
What is the associated volume of isolated water? Number of
customers? Total demand?
Pipe Break/ Contamination Feature
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Generate a contamination report by a point
1. Click on “Facilities Management” on the top menu bar
2. Select “Contamination (point)” from the menu
3. Click on a pipe in the network map in the location of the contamination
4. Click on a valve to expand the contamination beyond the valve
5. Go back to the Facilities Management menu and select “Contamination Report”
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1 2
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3
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4. Single-click this valve to see the contamination move north and west in the system. (Note: clicking again on this valve will close it and the contamination will update to the new boundary condition.)
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Pipes isolated from the system are highlighted green.
Volume Summary Box
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Elements of a Contamination Report (Point Selection)
1. File name of the network
2. Date that the analysis was performed
3. Name of the pipe that contains the source of the contaminant (this is defined by where the user clicked to insert the point intrusion)
4. Volume of water contained in the contaminated pipes
5. Volume of water contained in pipes that are not contaminated but are isolated from a source
6. List of valve that must be turned off in order to isolate the contamination
7. List of hydrants that are in the contaminated region
8. Name and elevation of the lowest hydrant in the contaminated area (for use in flushing)
9. List of the lengths of all of the types of pipes within the contaminated region; categorized by material, rating, and diameter
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models
– Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling • 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling
– Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 110
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OFF-LINE COMPUTER MODELS
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SPATIAL VISUALIZATION
OF NETWORK
COMPONENTS
OFF-LINE COMPUTER
MODELS
ON-LINE COMPUTER
MODELS
SUPERVISORY
CONTROL AND DATA
ACQUISITION (SCADA)
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off-line network modeling
• 5. Overview of SCADA • 6. Overview of Sensor Placement
– Sensor Placement Model
• 7. On-line network modeling – Real-time predictive analytics: process and benefits
– Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 112
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models
– Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling
– Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 113
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Water Quality Sensor Placement
• General guidelines
– Single sensor placement
• Graphical method
• Simplified graphical method
• Placement Software
– TEVA SPOT
– KYPIPE
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Sensor Location Tool
INPUT
• Number of sensors to be placed in system
• Mass injection rate of contaminant (1000 mg/min)
• Duration of injection (1 hr)
* Be sure you are using an Extended Period Simulation (EPS)
OUTPUT
• Optimal sensor placement locations within system
• Contamination Report
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Sensor Location Tool
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Sensor Location Tool
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Sensor Location Tool
Press “SHIFT + F7”
Press “Shift + F7”
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Sensor Location Tool
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Sensor Location Tool
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Sensor Location Tool
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Sensor Location Tool
2 sensors placed at optimal locations
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Sensor Location Tool
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling – Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 124
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ON-LINE COMPUTER MODELS
125
SPATIAL VISUALIZATION
OF NETWORK
COMPONENTS
OFF-LINE COMPUTER
MODELS
ON-LINE COMPUTER
MODELS
SUPERVISORY
CONTROL AND DATA
ACQUISITION (SCADA)
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ON-LINE COMPUTER MODELS
126
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ON-LINE COMPUTER MODEL GUIDANCE
• Model / SCADA Integration / Calibration
• Implementation Strategies and Barriers for Real-Time Modeling
• Potential Applications of Real-Time Simulation
• Actual Applications of Real-Time Simulation
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling
– Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit • 9. Wrap up discussion 128
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Operational Toolkit for a Water Distribution System WDS Wizard
A Water Wizard Module
Abdoul A. Oubeidillah, Ph.D.
Andrew N.S. Ernest, Ph.D.,P.E., BCEE, D.WRE Joseph L. Gutenson
The Environmental Institute The University of Alabama
Project Workshop May 27th 2014
Northern Kentucky Water District
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130
User Defined
Decisional Process
User Assisted
Decisional Process
User Assisted Decisional Process (toolkit)
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Workshop Agenda • 1. Project Overview
• 2. Overview of Project Website
• 3. Overview of Visualization Models – Graphical Flow Model
– Pipe Break Model
• 4. Off line network modeling
• 5. Overview of SCADA
• 6. Overview of Sensor Placement – Sensor Placement Model
• 7. On-line network modeling
– Real-time predictive analytics: process and benefits – Real-time network modeling: NKWD field study
• 8. Overview of Toolkit
• 9. Wrap up discussion 131
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Survey • On a scale of 1-9, how important are the following
knowledge databases to your operations?
• Information on sensors and telemetry. [ ]
• Information on SCADA. [ ]
• Information on network visualization. [ ]
• Information on sensor placement. [ ]
• Information on off-line modeling. [ ]
• Information on model calibration. [ ]
• Information on real-time modeling. [ ]
• What additional content would you like to see added?
132
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Survey
• On a scale of 1-9, how likely would you be to use the following models?
– Graphical flow model [ ]
– Decon/pipe break model [ ]
– Sensor placement tool [ ]
– Real-time operations [ ]
133
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Survey
• How useful was the project presentation?
• What additional information would you like to see?
• What information, if any, do you feel was not necessary?
• What changes could be made to make the presentation more informative or useful to your operations?
134
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Questions?
135
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OFF-LINE COMPUTER MODELS
136
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OFF-LINE COMPUTER MODEL GUIDANCE
• Network Analysis
• Model Development
• Model Calibration
• Model Calibration Literature
• Laboratory Model Calibration Case Study
• Actual System Calibration Case Studies
• Model Application
• Examples of Model Applications
• Model Selection
• EPANET
• KYPIPE