Download Presentation - Regional Technical Forum

SIMPLIFIED VOLTAGE OPTIMIZATION
M&V PROTOCOLS
Regional Technical Forum
August 4, 2009
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NEEA Distribution Efficiency Initiative Overview
• Phase 1 – Development (2003-2007): Confirmation and
Validation of Costs, Benefits, and Implementation
Options and Tools.
• Phase 2 – Implementation: Applies Communication /
Marketing, Regional Policy Implementation and Utility
Decision Making Tools.
• Phase 3 – Transition: Integration of Project Actions to
Market Transformation.
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NEEA DEI Participating Utilities
Utility
DEI Participation
Avista Corp
Pilot Demonstration
Clark Public Utilities
Pilot Demonstration
Douglas PUD
Load Research, Pilot Demonstration
Eugene Water & Electric Board
Load Research
Franklin PUD
Load Research
Hood River
Load Research
Idaho Falls Power
Load Research
Idaho Power
Load Research, Pilot Demonstration
PacifiCorp
Load Research
Portland General Electric
Load Research
Puget Sound Energy
Load Research, Pilot Demonstration
Skamania PUD
Load Research
Snohomish PUD
Load Research, Pilot Demonstration
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Summary
NEEA Load Research Project
• Strata established for homes with different mixes of enduses; i.e. electric heat, gas heat, air conditioning…
• Monitor Residential Homes
– Qualify home for voltage regulator installation
– In-home assessments
– Voltage Control (115.5V) for a day then utility voltage
for a day
• 413 homes, 395 homes included in analysis
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Summary
NEEA Pilot Demonstration Project
• Controlled voltage at substation (day ON day OFF)
– Used Line Drop Compensation
– Used End of Line voltage feedback loop
• 6 Utilities, 10 Substations, 31 feeders
• Performed system improvements
– Installed feeder meters
– Phase balancing
– Voltage regulators
– Capacitors
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NEEA DEI Project Savings
• Project Savings 8,563 MWhr (1.88 aMW annually)
• 345 kWh per residential home (Load Research
project)
• Cost of less than 5 Mills ($0.001/kWhr)
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Customer Satisfaction - PSE
“ There were no statistically significant differences in the
customer average ratings between the control group and either
test group for overall electric service quality, power reliability
and power quality.”
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Potential Savings & Investment
Type of Improvement & Cost / Substation
Voltage Regulation LDC
$15 - $25k
Voltage Regulation LDC w/ Minor System improvements
$40 - $60k
Voltage Regulation LDC w/ Major System Improvements
$80 - $100k
Voltage Regulation EOL w/ Major System Improvements
$100 - $350k
Energy
Savings
kW
Demand
Reduction
kvar
Demand
Reduction
0.5% - 1%
1% - 2%
3% - 5%
0.1 - 2
1% - 2%
2% - 2.5%
3% - 7%
2-8
1.5% - 2.5% 2.5% - 3%
5% - 10%
10 - 15
10% - 20%
20 - 50
2% - 3%
3% - 3.5%
Cost in Mils
($0.001/kWh)
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DEI Guidebook & Software
• Guide Book
– Helps utilities establish guidelines for planning, designing, and
operating distribution systems
– Provides utilities with an overview of the processes and
procedures
– Provides documentation of the Distribution Efficiency
Calculator
• Software Tools
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Distribution Efficiency Calculator
Excel based application
Managers Tool provides high level results
Engineers Tool allows user to develop multiple scenarios and
compare results
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Results of NEEA DEI Study
Regional Project Highlights
• Distribution efficiency methods are achievable at a cost of 2 to
15 Mills per kWh that can produce regional savings of 100 to
150 aMW
• Distribution efficiency improvement at a cost of 25 to 50 Mills
per kWh can achieve regional savings of 200 to 270 aMW
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MEASUREMENT & VERIFICATION PLAN
FOR
DISTRIBUTION SYSTEM VOLTAGE OPTIMIZATION
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Simplified Voltage Optimization (VO)
M&V Plan Goals
• Simplify the process to measure and verify energy savings obtained
from optimizing voltage using the following methods:
• Voltage Fixed Reduction (VFR)
• Line Drop Compensation (LDC)
• Automated Voltage Feedback Control (AVFC)
• Standardize the assumptions used to calculate the CVR Factor
• Modify the early DE Calculator to adopt the simplified processes and
standardized assumptions to ensure energy savings calculations are
credible
• Develop data collection templates to increase efficiency and promote
consistency throughout the region
• Plan & calculations comply with Federal Energy Management
Program M&V Guidelines v3.0
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Simplified Voltage Optimization
M&V Protocols
• Voltage Fixed Reduction (VFR)
• Line Drop Compensation (LDC)
• Automated Voltage Feedback Control (AVFC)
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Simplified Voltage Optimization
Implementation Prerequisites
•Deploying VO without ensuring the targeted substation or
feeders are robust creates low-voltage risks to a utility. To ensure
a successful deployment of VO, pre-requisites that indicate a
healthy system must be considered. Prerequisites may require a
need for one or more of the following:
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Balance Feeder Phase Loading
Reconfigure Feeder Topology
Add Capacitors (fixed and switched)
Add Feeder Phases
Replace Distribution Transformers
Upsize Feeder Conductors
Add Feeder Line Regulators
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Simplified Voltage Optimization Process
• Baseline Measurements
– Collect and/or determine required system data
– Measure and Verify system prerequisites
– Perform power flow simulations and ΔV
calculations
• Calculate baseline average voltages V*Baseline
• Select VO method(s) to be used
– Voltage Fixed Reduction
– Line Drop Compensation
– Automated Voltage Feedback Control
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Simplified Voltage Optimization Process (Cont)
• Design improvements to reduce voltage drop
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–
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–
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•
•
•
•
•
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Add phases
Add, replace, or relocate shunt capacitors
Reconductor feeder conductors
Add Line Voltage Regulators
Add or Replace Distribution Transformers
Reconductor or replace secondary conductors
Calculate Regulator and Capacitor control settings
Calculate CVR Factor and new average voltages V*New
Compare V* and Estimate ΔE energy savings
Install VO improvements
Post-installation Measurements
Calculate V*Post and adjust ΔE estimates
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International Performance M&V Protocol
• Option D
– Calibrated simulation - Distribution Efficiency Calculator
– DE Calculator provides estimate of savings for a
substation attributable to each ECM within a multipleECM project
– Baseline data may not be available
– Reporting period difficult to quantify. Changes to
substation operation make it too difficult to predict energy
use
– Primary M&V approach for assessing EE inclusions in
new substation designs
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Energy Efficiency/Distribution/Transmission
Technical Work Group
• Bring attention to the personal knowledge and depth of
experience found throughout utilities in the PNW
• Highlight the hidden talent and successes within the region
• A venue for utilities to learn from and share technical
distribution-level efficiency knowledge, experience and ideas
with peers in a united and positive environment
• There is a critical need to explore what works... and what
doesn’t
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Voltage Optimization M&V
Development Tasks
• Dev draft voltage optimization M&V protocols (complete)
• Review draft protocols with BPA staff (complete)
• Evaluate and testing of draft protocol methods
• Review testing results w/ BPA & Technical Workgroup
• RTF presentation - TBD
• Draft application forms & finalize work
• Update protocol documentation & methods
• Second RTF presentation - if required
• Complete protocol package & update Distribution Guidebook
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Project Team
• Utility Planning Solutions - Robert Fletcher
• RW Beck - KC Fagen
• RMH Consulting - Bob Helm
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Simplified Voltage Optimization
M&V Plan
Questions?
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