caper battery energy bhargav patel kongmeeng her storage
TRANSCRIPT
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CAPER Battery Energy Storage System (BESS)
• At Distribution Level • Our Design Approach •
TEAM MEMBERS : Johnson Ngocorai Alaa Aldalooj Bhargav Patel Kongmeeng Her Lawrence Cole (Project Lead)
Project Mentors : Nabila BouSaba (Advisor) Dr. Sukumar Kamalasadan (Faculty Mentor) Lee Easter (Technical Advisor) Project Sponsor : Sherif Abdelrazek, Ph.D.
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Table of Contents
01 Objective and Scope
03 Optimal Placement of DER 02 Long Term Dynamics
04 Analysis
05 Future Plan
06 Conclusion
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Objective and Scope
SCOPE :
❖ Complete review of available distribution BESS chemistries and technologies for optimal technology selection
❖ Model BESS and PV system in CYME ❖ Evaluate performance of selected BESS ❖ Analyze the circuit efficiency with and without the BESS and PV system ❖ Find optimal location of BESS and PV system on the feeder
OBJECTIVE :
Design and find the optimum location for a 1 MW (2 MWh) BESS with 2 MW Solar facility within the feeder such that the value from the new Distributed Energy Resources is maximized.
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Battery Chemistries
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Battery Chemistries
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01 Objective and Scope
03 Optimal Placement of DER 02 Long Term Dynamics
04 Analysis
05 Future Plan
06 Conclusion
Table of Contents
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Model Structure and Devices Locations
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LTD Simulations for Various Combinations of Feeder Load and PV Active Power Profiles
● Heavy and light load profiles
● Clear and intermittent PV power profiles
● Find the most vulnerable locations as it pertains to over/under voltage
● Study aims to use outcomes as guidance in DER and BESS placement criterion
PV_ClearDay_1Day
PV_IntermittentDay_1
Day
PV_Real_Measurements_FullYear
Light_Load_1Day
Heavy_Load_1Day
Real_Measurements_Load_Full
Year
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LTD Results - Four Combinations - One Day Data Type
PV Load
C1 Clear-1Day Heavy-1Day
C2 Clear-1Day Light-1Day
C3 Intermittent-1Day Heavy-1Day
C4 Intermittent-1Day Light-1Day
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Long Term Dynamics Results (Feeder Voltage Profiles)
● No voltage violation throughout C1 through C4.
● Voltage drops more in case-1 and case-3 as Heavy Loads were used in both cases.
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Long Term Dynamics Results (Regulators Taps Operations)
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Long Term Dynamics Results C5 to C9 (Feeder Voltage Profile)
● Voltage profiles are within allowable limits.
● Voltage regulators are tapping accordingly for all loads types provided.
PV Load
C5 Clear-Full Year Real-Full Year
C6 Intermittent-Full Year Real-Full Year
C7 Real-Full Year Real-Full Year
C8 Real-Full Year Light-Full Year
C9 Real-Full Year Heavy-Full Year
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Long Term Dynamics Results C5 to C9 (Feeder Voltage Profile)
OLTC LReg1 LReg2 Total number of Taps
Case Taps-A Taps-B Taps-C Taps-A Taps-B Taps-C Taps-A Taps-B Taps-C
Case-5 1065 858 960 2260 1192 2025 2297 1260 1994 13911
Case-6 698 424 513 2091 705 1808 1894 681 1581 10395
Case-7 681 462 578 2021 687 1703 1836 653 1609 10230
Case-8 431 327 223 469 282 133 448 255 760 3328
Case-9 146 153 89 3070 489 2491 2613 679 1879 11609
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01
03 Optimal Placement of DER 02 Long Term Dynamics
04 Analysis
05 Future Plan
06 Conclusion
Table of Contents
Objective and Scope
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DER Optimal Placement Criterion
Key Factors ●Feeder’s furthest locations have voltage vulnerability ●Taps operations minimization ●Line losses reduction ●PCC over voltage due to reverse power flow ●Facility placed at the n number of tentative locations. ●Voltage Deviation Index (VDI) is calculated as follows:
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Tentative Locations for New DER Placement Criterion
System OLTC and line regulators
Shunt Capacitor
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01
03 Optimal Placement of DER 02 Long Term Dynamics
04 Analysis
05 Future Plan
06 Conclusion
Table of Contents
Objective and Scope
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Long Term Dynamics for 7 locations - C1 -Voltage Profiles
Voltage Deviation Index (VDI)
PCC2-Index PCC1 PCC2 Location-2
PCC2-1 0.0328 0.0423 0.0281
PCC2-2 0.0333 0.035 0.0426 PCC2-3 0.0327 0.042 0.0281
PCC2-4 0.0297 0.0358 0.0287 PCC2-5 0.0333 0.0344 0.037
PCC2-6 0.0333 0.0327 0.0403 PCC2-7 0.0333 0.049 0.0491
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Long Term Dynamics for 7 locations - C1 -Voltage Profiles
OLTC LReg1 LReg2 Total Taps operations
Losses (kWh) PCC2-
Index Taps-A Taps-B Taps-C Taps-A Taps-B Taps-C Taps-A Taps-B Taps-C
PCC2-1 4 3 4 20 12 18 16 6 11 94 209
PCC2-2 4 3 4 20 6 16 14 8 11 86 204
PCC2-3 4 3 4 20 12 18 16 6 11 94 206
PCC2-4 4 3 4 20 12 18 16 6 11 94 209
PCC2-5 4 3 4 20 6 11 14 8 11 81 204
PCC2-6 4 3 4 20 6 16 14 8 11 86 204
PCC2-7 4 3 4 20 6 16 14 8 11 86 212
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Long Term Dynamics for 7 locations - C5 -Voltage Profiles
● Minimal VDI was achieved by placing DER in PCC2-2, PCC2-5, and PCC2-6
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Long Term Dynamics for 7 locations - C5 - Taps Operations & Power Losses
OLTC LReg1 LReg2 Total Taps operations
Losses (MWh)
PCC2-Index
Taps-A
Taps-B
Taps-C
Taps-A
Taps-B
Taps-C
Taps-A
Taps-B
Taps-C
PCC2-1 1862 1569 1637 3507 2685 3420 2821 2086 2525 22112 587
PCC2-2 1864 1575 1639 2605 1680 2364 3187 2436 2994 20344 558
PCC2-3 1862 1569 1637 3499 2679 3416 2819 2086 2527 22094 587
PCC2-4 1858 1563 1629 3485 2663 3416 2815 2078 2525 22032 616
PCC2-5 1860 1569 1631 2601 1680 2364 3195 2416 2988 20304 593
PCC2-6 1860 1569 1633 2601 1680 2362 3193 2412 2988 20298 588
PCC2-7 1842 1559 1627 2589 1668 2360 3179 2398 2978 20200 643
● There is a trade-off between optimal location as far as different evaluation indexes are concerned.
● Throughout the whole year, minimal losses are achieved when DER is placed at PCC2-2, PCC2-5 and PCC2-6.
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Probable Value Streams
Line Loss Reduction
Regulator Tap Operations Reduction
Voltage Profile Improvement
Energy Time Shift
Solar Hosting Capacity Increase
Probable Value
Streams
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Long Term Dynamics for 7 locations - C7 - Taps Operations & Power Losses
● Minimum line losses occur when the PV facility is placed at PCC2-2 ● PCC2-5 and PCC2-6 are next best locations to place DER
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Taps Operations and Power Losses Cost Savings
Taps
($0.07/tap) Line Losses
($0.10/kWh) Total Cost
PCC2-1 $1223 $48,541 $49,764
PCC2-2 $1160 $46,682 $47,841
PCC2-3 $1223 $48,410 $49,633
PCC2-4 $1220 $50,162 $51,381
PCC2-5 $1158 $48,681 $49,839
PCC2-6 $1159 $48,373 $49,532
PCC2-7 $1469 $59,297 $60,766
● The taps cost are calculated from the total taps in one year multiplied by the cost per tap
● Calculation results for the line loss cost is from the total line losses in one year multiplied by the cost per kWh
● As seen PCC2-2 would cost the least as it saves the most on line losses
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01 Objective and Scope
03 Optimal Placement of DER 02 Long Term Dynamics
04 Analysis
05 Future Plan
06 Conclusion
Table of Contents
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Future Plan
11-09-2017 CAPER
Conference
11-11-2017 Add BESS and
evaluate its performance at
the selected location
11-13-2017 Work on the Python script to ensure BESS performs
as desired
11-17-2017 Test the BESS and PV system
at all 7 locations to confirm the
optimal location
11-23-2017 Gather all
results and analyze and fix
any other issues
11-30-2017 Work on the
documentation and initial
report
12-3-2017 Create a Final
report with changes from the initial one
12/8/2017 Poster
Presentation and Prototype Demonstration
(EXPO) Preparation
12/9/2017 Final Report
and Comprehensive
Document Submission
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Conclusion
● An iterative criterion is implemented to select optimal place for an additional 2 MW PV facility (DER-2).
● It is more valuable to add DER at the downstream part of line regulator-2 as far as all evaluation indexes are concerned.
● Base on the monetary values, line loss reduction is the most valuable index, PCC2-2 should be considered as an optimal location for DER.
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Acknowledgements
This work is supported by CAPER and DUKE ENERGY
● UNCC CAPER 1 senior design team would like to acknowledge our sponsor, Duke Energy, and CAPER along with EPIC for their guidance throughout this project.
● A special thanks and acknowledgment to Muhammad Ahmed (Graduate Research Assistant) for his help with the CYME simulation software and giving constructive feedback.
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Thank You! Any Questions?