copyright © pcs utilidata 2009 saving megawatts with voltage optimization tom wilson president pcs...

Copyright © PCS UtiliData 2009

Saving Megawatts with Voltage Optimization

Tom WilsonPresident

PCS UtiliData

[email protected]

32nd Industrial Energy Technology Conference

May 19–22, 2010

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



Odyssey of AdaptiVolt™

• PCS UtiliData founded 1986

• National award-winning Industrial Control System Integrator (CSIA, IEEE, Rockwell)

• Creation of AdaptiVolt™– 2000-2001 – 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


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)


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.


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.


Voltage Optimization Features Associated BenefitsReduce 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.

Why install voltage optimization?


480

504508

456

440

424

“A” S

erv

ice

“A” U

tilizatio

n

“B” S

erv

ice

“B” U

tilizatio

n

Volts

Normal Voltages

Voltages with

AdaptiVolt™

Allowable Voltage RangesANSI 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


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


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


AdaptiVolt™ Core Unit

L.V.M. Network

Substation RTU

Voltage Regulator Controller




Meter


MeterMeter Meter Meter

10,000 hp Refiner

10,000 hp Refiner

14,000 hp Refiner

L.V.M. L.V.M. L.V.M.

L.V.M. Network

Plant Ethernet

Substation Comms

SCADA Master


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


AdaptiVolt™ Basics

Distribution Substation Distribution Primary Feeder End-of-Line

Smart Grid Communications Network

“Real-Time” Voltage Monitoring

“Closed-loop”Voltage Regulator

Control

VARMINT

• VARiable

• Moment

• INTegrator

• Protects large motors– Synchronous– Induction


VIPER


• Voltage

• Integrating

• Probability

• Estimating

• Regulator

• Provides close voltage control without excessive regulator operations


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


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.

Use Process Info to Avoid!


=/

Without Process Info

Voltage

Demand

Refiner 3 - Test 1 Refiner 3 - Test 2


Voltage

Demand

Voltage

Demand

With Process Info


Refiner 3 - Test 1 Refiner 3 - Test 2

Feed Rate

Specific Energy

Using Specific Energy Yields


=


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*


Voltage Optimization Features Associated BenefitsReduce 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.

Why install voltage optimization?


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?


"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.

Voltage Optimization Perfected

For further information contact:

Tom WilsonPCS UtiliData509-466-2656

[email protected] visit our web site at http://www.pcsutilidata.com

ADAPTIVOLT™

copyright © pcs utilidata 2009 saving megawatts with voltage optimization tom wilson president pcs...

Documents

voltage level

year voltage optimization

low voltage points

power supplies slide

adaptivolt customers

wa slide

adaptivolt architecture

power nominal