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Saving Megawatts with Voltage Optimization

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Presentation on theme: "Saving Megawatts with Voltage Optimization"— Presentation transcript:

1 Saving Megawatts with Voltage Optimization
32nd Industrial Energy Technology Conference May 19–22, 2010 Tom Wilson President PCS UtiliData Copyright © PCS UtiliData 2009

2 The Opportunity In the US, industry uses 27% of the electricity generated ≈ $69 billion per year Voltage Optimization or CVR can save approximately 3% ≈ $2.1 billion per year savings Copyright © PCS UtiliData 2010

3 Odyssey of AdaptiVolt™
PCS UtiliData founded 1986 National award-winning Industrial Control System Integrator (CSIA, IEEE, Rockwell) Creation of AdaptiVolt™ – California Energy Crisis Input from a former CEO of a Pacific Northwest IOU Field tested and verified Have deployed AdaptiVolt™ as a Smart Grid application since 2002 Copyright © PCS UtiliData 2010

4 AdaptiVolt™ Customers
Some of our AdaptiVolt™ Utility Customers: Hydro Ottawa, Enersource Hydro Mississauga, Veridian Connections, Ripley Power & Light, AEP Ohio AdaptiVolt™ IVO Projects: Plum Creek Timber Company, Murray State University (Murray, KY), Ponderay Newsprint (AbitibiBowater, Usk, WA) Copyright © PCS UtiliData 2010

5 AdaptiVolt™ IVO. . . . . . is an application that implements next-generation Voltage Optimization at end-use facilities and electricity distribution substations using real-time monitoring of the primary voltages coupled with closed-loop control. Copyright © PCS UtiliData 2010

6 Voltage Optimization Fundamentals
Utilization devices operate at their peak efficiency at a voltage level which is usually near the lower bounds of their utilization and/or nameplate voltage. Copyright © PCS UtiliData 2010

7 Why install voltage optimization?
Voltage Optimization Features Associated Benefits Reduce total power demand. Reduce kW and MW demand charges. Reduce total energy usage. Reduce monthly energy bills and reduce the impact of higher future energy costs. Reduce reactive power requirements. Improve power factor. Allows motors and other utilization devices to operate more efficiently. Increase lifespan of equipment and reduce maintenance costs. Copyright © PCS UtiliData 2010

8 Voltages with AdaptiVolt™
Allowable Voltage Ranges Volts ANSI Standard C 84.1 – 1995 “Electrical Power Systems and Equipment – Voltage Ratings” Nominal 480 VAC – Range A (Normal Operation) Service Voltage 456 v – 504 v Voltage at which utility delivers power service entrance Utilization Voltage 440 v – 504 v Voltage at which equipment uses power Nominal 480 VAC – Range B (Out of Normal Operation) Service Voltage 440 v – 508 v Utilization Voltage 424 v – 508 v Normal Voltages 508 504 480 “A” Service “B” Service “A” Utilization “B” Utilization 456 440 Voltages with AdaptiVolt™ 424 Copyright © PCS UtiliData 2010

9 What type of devices become more efficient with Voltage Optimization?
Induction Motors Synchronous Motors Distribution Transformers Switching Devices, including: Fluorescent Lamp Ballasts Drives Power Supplies Copyright © PCS UtiliData 2010

10 AdaptiVolt™ Architecture in an Industrial Facility
Core controller located at a delivery substation or central location with communications access to voltage regulation devices Voltage Monitors are located throughout the plant at low voltage points and at essential machines and processes Existing communications networks can be used or new communications networks can be installed Monitoring and control can be done through an existing SCADA or control system Copyright © PCS UtiliData 2010

11 Substation RTU AdaptiVolt™ Core Unit Copyright © PCS UtiliData 2010
SCADA Master Plant Ethernet Substation Comms Voltage Regulator Controller Voltage Regulator Controller Voltage Regulator Controller Voltage Regulator Controller Voltage Regulator Controller Meter Meter Meter Meter Meter L.V.M. L.V.M. L.V.M. L.V.M. Network L.V.M. Network 10,000 hp Refiner 10,000 hp Refiner 14,000 hp Refiner Copyright © PCS UtiliData 2010

12 AdaptiVolt™ IVO Components
The AdpatiVolt™ IVO Core controller is a Rockwell ControlLogix PLC using RA software All components (core, LVMs) can be environmentally protected for specific applications: heat, dust, chemicals etc. All components are commercial off the shelf devices Copyright © PCS UtiliData 2010

13 AdaptiVolt™ Basics Copyright © PCS UtiliData 2010
Distribution Substation Distribution Primary Feeder End-of-Line “Closed-loop” Voltage Regulator Control “Real-Time” Voltage Monitoring Smart Grid Communications Network Copyright © PCS UtiliData 2010

14 VARMINT VARiable Moment INTegrator Protects large motors Synchronous
Induction Copyright © PCS UtiliData 2010

15 VIPER Voltage Integrating Probability Estimating Regulator
Provides close voltage control without excessive regulator operations Copyright © PCS UtiliData 2010

16 How do we measure Energy Savings?
Conservation Voltage Reduction Factor (CVRf): per unit energy saved per unit voltage reduced Represents the average slope on the utilization devices efficiency curve between the current voltage and the new proposed regulated voltage For example, a CVRf of 1.00 would indicate a 1% reduction in energy usage for every 1% reduction in voltage Copyright © PCS UtiliData 2010

17 Measurement and Verification Protocol for Industrial Processes
CVR Protocol for Process Loads Based on Protocol #1 Developed by PCS and first used for measurement and verification of the Fiber Refining Process at Plum Creek Timber. Compares process specific energy between CVR and non-CVR operating regimes to determine energy savings. Provides savings estimates for test periods and CVR factors for future savings forecasts. Copyright © PCS UtiliData 2010

18 Use Process Info to Avoid!
= / Copyright © PCS UtiliData 2010

19 Without Process Info Refiner 3 - Test 1 Refiner 3 - Test 2 Voltage
Demand Voltage Demand Demand Copyright © PCS UtiliData 2010

20 With Process Info Refiner 3 - Test 1 Refiner 3 - Test 2 Feed Rate
Specific Energy Copyright © PCS UtiliData 2010

21 Using Specific Energy Yields
= Copyright © PCS UtiliData 2010

22 Overall Demand Reduction – 3. 72%
Overall Demand Reduction – 3.72%* Energy savings at current production levels – 5,618,728 kWh/year* Forecasted energy savings at full production – 9,063,800 kWh/year* Copyright © PCS UtiliData 2010

23

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25 Copyright © PCS UtiliData 2010

26 Why install voltage optimization?
Voltage Optimization Features Associated Benefits Reduce total power demand. Reduce kW and MW demand charges. Reduce total energy usage. Reduce monthly energy bills and reduce the impact of higher future energy costs. Reduce reactive power requirements. Improve power factor. Allows motors and other utilization devices to operate more efficiently. Increase lifespan of equipment and reduce maintenance costs. Copyright © PCS UtiliData 2010

27 Is your Facility an IVO Candidate?
Are you served by a dedicated substation or express feeder? What is the size of your electrical load? (Hint: higher demand = more savings) Is there on-load voltage regulation capability? Are their conservation incentives available from your utility? Is there a plant energy management infrastructure? Are you planning on installing an EMS system? Copyright © PCS UtiliData 2010

28 "Energy efficiency is not just low-hanging fruit; it is fruit that is lying on the ground." 
From a speech by U. S. Department of Energy Secretary Steven Chu at the St James's Palace Nobel Laureate Symposium, May 2009. Copyright © PCS UtiliData 2010

29 Voltage Optimization Perfected
AdaptiVolt™ Voltage Optimization Perfected For further information contact: Tom Wilson PCS UtiliData Or visit our web site at


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