DNP3 DER Profile-EPRI Presentation.pdf
Transcript of DNP3 DER Profile-EPRI Presentation.pdf
Grant Gilchrist
Principal Consultant, Smart Grid Engineering Team
EnerNex
EPRI Smart Distribution and Power Quality
Conference and Exhibition
June 17-19, 2013
New Communications Standards for
Distributed Generation and Storage
2 © 2013 Electric Power Research Institute, Inc. All rights reserved.
EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Problem Statement
• Distributed generation systems increasing in popularity
• Need a standard way to communicate with the utility
• Need to agree on a common operating model
–What should a system be able to do?
–What data should be made available?
–How should generation interact with storage?
–What equipment should be modeled?
–What protocol(s) should it use?
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3 © 2013 Electric Power Research Institute, Inc. All rights reserved.
EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
DNP3 Profile
for PV
Generation and
Storage
Developing the Standards
Smart Inverter Focus Group
3
PAP12
Feed-back
Smart Energy
Profile
61850-90-7
Object models
for power
convertors in
DER
1815.1
Standard for
Mapping IEC
61850 to IEEE
1815 (DNP3)
61850-80-2
(Future Dual
Logo of IEEE
1815.1)
61850-7-420
Distributed
Energy
Resources
Data Model
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Model DER System
Battery
Storage
Photovoltaic
Generation
Inverter
Local Load
(the home)
Utility
DER
Connect/
Disconnect
Switch
Utility
Switch
Distributed Energy
Resource
Customer Site
DC Grid
(AC)
Measurement
Points
Output
(AC)
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
DER Generation & Storage Functions - Basic
• Connect or disconnect from grid
• Adjust maximum generation level
• Adjust power factor
• Charge or discharge storage
• Act on pricing signal
• Modify settings
• Log event history
• Report status
• Follow Volt/VAR curves
• Schedule changes in curve or settings
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
DER Generation & Storage Functions - Advanced
• Frequency-Watt curve
• Dynamic reactive current
• Low/High voltage ride-through
• Watt-Power factor curve
• Volt-Watt curve
• Temperature-VAR curve
• Real power smoothing
• Dynamic Volt-Watt mode
• Peak power limiting
• Load and generation following
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Moving Average of Voltage
DbVMax
ArGraSagDelta Voltage (% of VRef)
Deadband
DbVMin
ArGraSwell
Ind
uct
ive
Cap
acit
ive
Ad
dit
ion
al R
eact
ive
Cu
rren
t (%
of
AR
tg)
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Interactions Between Functions
• The standards define how all these functions interact
• Some functions cannot run simultaneously
• Some can override the others
• Factors affecting which function is operating:
– Physical limits, e.g. no wind or sun
– Nameplate limits, e.g. maximum storage capacity
– Chosen operating limits
– Transient vs. Steady-state functions
– Commanded vs. Automatic vs. Scheduled
– Local/Remote mode
– Automatic/Manual mode
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Low/High Voltage Ride-Through
• Configurable curves, multiple zones
• This kind of flexibility not currently permitted by IEEE 1547
• Must be configured to comply
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
DNP3 Photovoltaic Profile
• Official DNP3 Application Note
• Published on DNP Users Group web site
• Specifies required protocol Options
• Mapping to the DER smart inverter functions
• Mapping to IEC 61850-90-7 Object Model
• Minimum points list
• Std. data formats
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Grid Configuration and Islanding
• The role of the DER may change
– Islanded or not islanded
– Site controller or not site controller
– Communicating or not communicating
– Other factors
• The standards define multiple settings groups
• The DER chooses which settings group to use on the fly
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EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Results
11 Image: Blu-Sky Solar
Distribution SCADA
Non-Utility Networks
Consistent Behavior and Responses
Home Area Network and Advanced Metering
12 © 2013 Electric Power Research Institute, Inc. All rights reserved.
EPRI Smart Distribution and Power Quality 2013 Conference and Exhibition
Questions?
Grant Gilchrist, EnerNex
403-938-0220
Brian Seal, EPRI