system-wide process controls upgrade detroit water & sewerage department
TRANSCRIPT
SYSTEM-WIDE PROCESS CONTROLS UPGRADE
Detroit Water & Sewerage Department
System-wide Process Controls Upgrade
Agenda Detroit Water and Sewerage Department (DWSD) Old Control System Limitations Project Scope Design Highlights Implementation Challenges Project Results Moving Forward
Detroit
About DWSD
Third largest municipal water and sewer utility in the United States
Over $500 Million in revenue
Provides services to more than 4 million retail and wholesale customers
Service area of 1079 square miles
Yellow - Wholesale Red - Retail
Water Wastewater SystemsDWSD System Overview• 5 Water Treatment Plants• 20 Water Booster Stations• 10 Wastewater Collection Stations• 1 Wastewater Treatment Plant• 7 CSO Basins• 13 In-system Storage Devices• 200 Remote Monitoring/Control Sites
Valve, Pressure, Sewer Meter, Precipitation Gauge, CSO outfall, Dam, Level
Old System Limitations• Limited monitoring due to constraints on “tone multiplexing”• Single line of communication• Limited configuration options for Operator (Trending, Alarming, Historical Reviews)• Unable to provide Equipment status and Process Alarms • Parts and repair services becoming unavailable• Extremely difficult to integrate with other control systems
Background - 1964
Background
Background
Background
Project Scope Provide system monitoring and control from a single location Provide common equipment and functionality at all locations Achieve economies of operation Increase system reliability at SCC and remote facilities Ensure continued high water quality Ensure stable water distribution pressure Minimize CSO events Continue effective wastewater treatment
Project Scope Improve efficiencies of operations and maintenance personal Maximize use of standard off-the-shelf hardware and software Better Alarm Management Provide Redundancy Communication co-ordination (regular and emergency) Provide role based security access Provide historical database
Scope HighlightsDescription of new control system System component layout (include diagram) System Control Center video wall map RTU types Redundant communication description Redundant Power sources Historical data collection Disaster Recovery
Control System Upgrade Implementation Process Design workshops Graphics workshops Control narrative workshops Factory Acceptance Testing Phase over testing System acceptance testing
Training (more than 700 people)
Control System Network
Primary Communication
AT & TOPT-E-MAN NETWORK
First backup Communication
AT & TOPT-E-MAN NETWORK
AT & TPNT
NETWORK
Secondary backup Communication
Radio repeater Sites
Pump Station Features Automatic Pump Control Auto Pump Sequencing Communication Redundancy Instrumentation redundancy Detailed equipment alarms Power redundancy
Pump Station
Remote monitoring site Features
Communicates to SCC and other remote sites via 900 MHz spread spectrum radios Custom protocol for security Can communicate to 10 other locations Remote configuration/parameter changes capability
Remote Site
Implementation Challenges
Limited system access during peak season periods Multiple System Networks Phase-over conducted on live system Physical relocation of Operations staff Adaptation of Operations staff
Solution
Solution
SolutionBetter monitoring capability -
• GIS based video wall map• 3600 graphics• Alarm Management• 30,000 I/O points/tags• Network diagnostics graphic• Control system diagnostics graphic
Project Results Better management of distribution systems and remote sites Improved ability to react to rapidly changing conditions Reduced operations and maintenance costs Improved Alarm Management Increased Energy Efficiency Automated operational reports generation Increase system availability Implemented regulatory reports
Lessons Learned More collaboration with end users during
design phase
Software upgrade strategy needed
Revision control
System security
Moving Forward
Backup control center
System-wide software and hardware upgrade
Energy Management
Hydraulic Modeling Integration
Additional automated reporting
Ongoing software strategy improvements
Backup Control Center
Detroit Water & Sewerage Department
Questions & Answers