Big Data Uses in Smart Grids: Challenges and Opportunities...Big Data Uses in Smart Grids:...
Transcript of Big Data Uses in Smart Grids: Challenges and Opportunities...Big Data Uses in Smart Grids:...
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Big Data Uses in Smart Grids: Challenges and Opportunities
M. KezunovicLife Fellow, IEEERegents ProfessorDirector, Smart Grid CenterTexas A&M University
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Outline
Smart Grid Domains and InteractionsProblems to Solve and ExpectationsSources and Properties of Big DataChallenges and OpportunitiesExamples: - Asset Management- Outage ManagementConclusions
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Smart Grid DomainsDomain evolution
Original NIST domains, 2009Addition of other domains
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Integrated Ecosystem
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Data Connectivity
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Outline
Smart Grid Domains and InteractionsProblems to Solve and ExpectationsSources and Properties of Big DataChallenges and OpportunitiesExamples: - Asset Management- Outage ManagementConclusions
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Problem to solve: Outages
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Major Outage Causes
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Source: Annual Eaton Investigation 2013
Source: Alaska Electric light and Power Company
Source: We Energies
Source: Annual Eaton Investigation 2016
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Expectations
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Products and Services
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Investments
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Smart Grid Data Growth
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Source: EPRI, GMT Research 2013
Source: EPRI, GTM Research, 2014
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Outline
Smart Grid Domains and InteractionsProblems to Solve and ExpectationsSources and Properties of Big DataChallenges and OpportunitiesExemples: - Asset Management- Outage ManagementConclusions
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Sources of Big Data
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Utility measurements
Weather Forecast
Vegetation Indices
Lightning Data
GIS
Network Assets Data
Animals Data
UAS
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Utility measurements
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Synchrophasors
Assets
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Weather Data
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Weather Station Radar Satellite
National Digital Forecast Database
(NDFD)
Example: Apparent TemperatureData download: every 3 hoursForecast for next 3 daysData resolution: 3 hours
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Big Data Properties: 4 Vs
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Big Data Properties: Examples
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Big Data Properties: Temporal
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10-9 10-3 100 103 106 109
0.1° 1° 1 cycle 12cycles
clockaccuracy
Accuracy of GPStime stamp
differential absolute
256 samplesper cycle
High-frequency,switching devices,inverters
Synchro-phasors
Protective relayoperations
Dynamic systemresponse (stability)
Demandresponse
Wind and solaroutput variation
Servicerestoration
Day-aheadscheduling
Life spanof anassets
T&D planning
Hour-ahead schedulingand resolution of most renewablesintegration studies
seconds
Weather
NANOSECOND MICROSECOND MILLISECOND SECOND MINUTE HOUR DAY MONTH YEAR
10-6
Modified from: A. von Meier, A. McEachern, “Micro-synchrophasors: a promising new measurement technology for the AC grid, “ i4Energy Seminar, October 19, 2012.
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Outline
Smart Grid Domains and InteractionsProblems to Solve and ExpectationsSources and Properties of Big DataChallenges and OpportunitiesExemples: - Asset Management- Outage ManagementConclusions
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Challenges: Define Solutions
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Challenges: Reduce Economic Loss
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2012
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Challenges: Predict Risk
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Opportunities: Define Risk
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Risk = Hazard x Vulnerability x Impacts
Intensity T – Threat Intensity
Hazard – Probability of a threat with intensity T
Vulnerability – Probability of a consequence C ifthreat with intensity T occurred
Impacts– Estimated economic and/or social impactsif consequence C has occurred
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Opportunities: Weather Impact Risk
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Opportunities: Risk Framework
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Outline
Smart Grid Domains and InteractionsProblems to Solve and ExpectationsSources and Properties of Big DataChallenges and OpportunitiesExamples: - Asset Management- Outage ManagementConclusions
M. Kezunovic, Z. Obradovic, T. Dokic, B. Zhang, J. Stojanovic, P. Dehghanian, and P. -C. Chen,“Predicting Spatiotemporal Impacts of Weather on Power Systems Using Big Data Science,” Studies in Big Data, Vol. 24, Witold Pedrycz and Shyi-Ming Chen (Eds), Springer Verlag, 2016
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Example 1: Insulator Risk Model
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M. Kezunovic, T. Djokic, “Predictive Asset Management Under Weather Impacts Using Big Data, Spatiotemporal Data Analytics and Risk Based Decision-Making, IREP, Portugal, August 2017
M. Kezunovic, T. Djokic, P-C. Chen, “Big Data Uses for Risk Assessment in Predictive Outage and Asset Management,” CIGRE Symposium, Ireland, May, 2017
Risk
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New Data Analytics
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Risk = Hazard x Vulnerability x Economic Impact
R = P[T] · P[C|T] · u(C)Intensity T – Lightning peak current
Hazard – Probability of a lightning strike with intensity T
Vulnerability – Probability of a insulation breakdown fora given intensity of lightning strike
Economic Impact – Estimated losses in case ofinsulation breakdown (cost of maintenance andoperation downtime)
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BD use in Modeling the Insulator BIL
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Conventional method BD approach
• BIL determined by insulator manufacturer.
• Insulator breakdown probability determined statistically.
• Economic impact not taken into account.
• Manufacturers standard BIL used only as a initial value. Standard BIL changes during the insulator lifetime.
• Insulator breakdown probability determined based on spatio-temporally referenced historical data and real-time weather forecast using data mining.
• Risk model includes economic impact in case of insulator breakdown.
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Data Integration
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Black – Used in conventional insulation coordinationRed – Additional data used in BD method
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Prediction Model
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Result: Risk Map
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Risk on January 1st 2009 Risk on December 31st 2014
Risk on January 5th 2015 (Prediction)
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Example 2: Vegetation Risk Model
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T. Dokic, P.-C. Chen, M. Kezunovic, “Risk Analysis for Assessment of Vegetation Impact on Outages in Electric Power Systems“, CIGRE US National Committee 2016 Grid of the Future Symposium, Philadelphia, PA, October-November 2016.
P. C. Chen and M. Kezunovic, “Fuzzy Logic Approach to Predictive Risk Analysis in Distribution Outage Management”, IEEE Transactions on Smart Grid, vol. 7, no. 6, pp. 2827-2836, November 2016.
Risk
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New Data Analytics
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Risk = Hazard x Vulnerability x Economic Impact
R = P[T] · P[C|T] · u(C)Intensity T – Wind Speed and Direction, Precipitation,Temperature
Hazard – Probability of a weather conditions with intensityT
Vulnerability – Probability of a tree or a tree branch comingin contact with lines for a given weather hazard
Economic Impact – Estimated losses in case of an outage(cost of maintenance and operation downtime)
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BD Use in modeling weather Impacts
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Data Integration
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Spatial Correlation of Data
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Result: Risk Maps
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ID Zone Order for Tree Trimming Schedule Average Risk Reduction [%] Economic Impact Reduction1 12,1,21,22,13,24,2,3,10,19,11,5,6,18,4,23 32.18 0.392 12,1,13,24,
21,22,2,3,10,19,11,5,6,18,4,2331.98 0.43
3 1,12,21,22,10,19,11,5,13,24,2,23,3,6,18,4 26.14 0.284 12,1,24,13,
2,3,10,21,11,5,6,18,4,22,19,2323.84 0.25
5 1,12,21,22,24,13,3,10,2,19,6,4,11,5,23,18 20.89 0.26
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ConclusionsBig Data is abundant in smart gridsIt may be used to solve major problemsMore research on data analytics is requiredThe solutions have to offer predictive capabilities associated with risksManaging assets and outages is a good candidate to gain from BD useBig Data created big expectations
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QUESTIONS?
Today’s presentation will be made available on the IEEE Smart Grid PortalSmartgrid.ieee.org
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