SCADA Supervisory Control and Data Acquisition What is SCADA? - PowerPoint PPT Presentation

SCADA Supervisory Control and Data Acquisition

What is SCADA? Superv rvisory Control and Data Acquisition SCADA is the system that controls the various operating processes at our facilities. It is also the system that collects and stores real-time data from sensors and other devices for reporting, analysis and optimization of our treatment processes.

SYSTEMS SIM IMILAR TO SCADA You encounter SCADA-like systems almost every day. Most of today’s vehicles are equipped with systems similar to SCADA.

SUPERVISORY Rivanna’s SCADA system is utilized by its operators and managers to monitor and supervise the production and treatment processes at the water and wastewater facilities. Operator “Dashboard” or HMI screen at the South Rivanna Water Treatment Facility

CONTROL • Operators are able to control on-site processes along with those at remote facilities. • Programmed set points and trending parameters are continuously monitored and adjusted as needed using real- time raw data. This allows the SCADA “system” to make adjustments as conditions change. Rivanna Pump Station Process Screen

RIV IVANNA PUMP STATION – PUMP CONTROL

CONTROL Staff can remotely monitor and control a variety of assets including: Wastewater 4 Water Resource Recovery Facilities 7 Pump Stations Water 4 Reservoirs 5 Treatment Facilities 8 Pump Stations 11 Storage Tanks Operator Control Station at the South Rivanna Water Treatment Facility

ACQUISITION Communication Network The SCADA network infrastructure is comprised of: • Leased data lines • Modems • Radio networks • Cellular transmission • Secure IP network tunnels • Internal – wide and local area networks Cellular Router controlled by network routers

ACQUISITION NETWORKING DIA IAGRAM

ACQUISITION Communication Network Historical data is stored on the main servers. The main hub resides in the Administration building. • HP Generation 9 state of the art servers to securely store the acquired data. • Robust database software helps manage and use that data for analysis. Bank of servers

DEVICES Devices continuously communicate with PLCs 24 hours a day, 7 days a week via the network. • There are over 12,500 input/output data points being collected, communicated and recorded. Tank Level Indicator • There are over 2,000 South Rivanna Elevated Tank potential alarms that are Return activated sludge flow meter monitored. Scottsville AWRRF Level Indicator Sugar Hollow Reservoir

PLC Programmable Logic Controller The PLC, much like a computer, serves as the central processing unit. It houses most of the major programming and communicates with devices and servers via the network. The bulk of PLCs used by Rivanna are manufactured by GE and controlled by GE proprietary software. The PLCs require periodic software updates. • Annual license renewal cost: $30,000 • Hardware upgrade per PLC: $5,000 - $30,000 PLC at Observatory Water Treatment Facility (over 15 years old)

HMI Human Machine Interface HMI is a program that runs on a standard desktop or laptop workstation. The operator interacts with the SCADA system using the Dashboard/HMI screen. With the use of PLCs, the network and connected devices, the operator has the ability to: • Real-time data only • Start/stop a pump • Change timer settings • Control feed rates • Monitor alarms, etc. Operator “Dashboard” or HMI screen at the South Rivanna Water Treatment Facility

SCADA SYSTEMS and NETWORKS NETWORK COMM. SERVERS PLCs SWITCHES DEVICES Water 8 30 14 31 Wastewater 6 32 25 7 Total 14 62 39 38 PLC at Moores Creek Advanced Water Resource Recovery Facility

WHY IS IS SCADA IM IMPORTANT? SCADA technology is essential to meet modern day needs of the municipal water and wastewater industry. Complicated treatment processes – Nutrient reduction goals for the ENR project would be difficult to achieve without the precision of SCADA. Vital data that was once thought to be unattainable is now available instantly. Real time data (Efficient resolution of line break and distribution issue.) Efficiencies : Sampling changes, staffing efficiencies, remote monitoring

SECURITY, STORAGE and RECOVERY Ensuring that our SCADA system is secure at all times is a number one priority. • Access is restricted from outside Rivanna's Wide Area Network. • Connection between routers through secure IP tunnels (IPSEC). • NGFW (next generation firewalls); data is encrypted and secured from outside malware and intrusion attempts. NGFW is installed at each facility and on all outward facing devices. • For protection, multiple authentication steps are required to access HMIs.

SECURITY, STORAGE and RECOVERY • Each facility hosts at a minimum one SCADA dedicated server which houses the HMI/PLC programs and databases. Servers are backed up routinely to ensure the recovery of essential data. • In the event of a system failure, IT maintains two fully functioning standby SCADA servers with the most current programs that can be installed at any facility in less than one hour. • The IT Department maintains an extensive spare parts and equipment inventory. This proactive approach ensures minimal impact on operations during equipment repair and replacement.

DATA & REPORTING Data is the heart of SCADA. All of the information collected is stored in databases and can be accessed at any time. Data is used for: • Regulatory and compliance reporting. • Trending and benchmark reports for strategic planning. • Providing critical data for capital project design. • Treatment problem solving.

The Maintenance Department is also an important resource in maintaining the SCADA system.

GENERAL IT IT SUPPORT • I5-20 Non-SCADA servers • GIS software • 80-100 Workstations • Maintenance work order, • Accounting software (Microsoft preventive maintenance software Dynamics GP 2013) • Fuel Management software • Septage data collection • Laserfiche management • Solid waste scale crossing and • Security monitoring, video and ticketing software (WasteWorks) cell phone management

RESOURCES TYPE COST TIMING MANPOWER $120,000 YEARLY LICENSING/SUPPORT $30,000 + YEARLY TRAINING $5,000-$10,000 YEARLY PLC REPLACEMENT $5,000-$30,000 EACH 7-10 YEARS OIT DEVICE REPLACEMENT $1,000-$3,000 EACH AS NEEDED SERVER $2,000-$5,000 EACH 2-4 YEARS WORKSTATION $1,000-$1,500 EACH 3-5 YEARS BUDGET SCADA specific Budget FY 2018: $154,000 Instrumentation Budget FY 2018: $134,000

NEAR-TERM and FUTURE PROJECTS Near-Term Projects • Granular Activated Carbon (GAC) upgrade at each water treatment facility • Sugar Hollow valve automation • Crozet Finished Water Pump Station Future Projects • Improve data management software • Modernize remote communications (radio network has exceeded its recommended useful life of 8-10 years) Woodard & Curran study recommended nearly $2.4 million ($1.3 for water and $1.1 for wastewater) in system changes, optimizations, improvements and programming upgrades.

DATA & REPORTING PROCESS/ SOFTWARE CONTROL PEOPLE HARDWARE