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© Saifur Rahman 2021
Connectivity in the Smart Grid for the Integration of Renewables in Saudi Arabia
Professor Saifur RahmanDirector, Advanced Research Institute, Virginia Tech, USA
Invited Talk
© Saifur Rahman 2021
#WEP2021 CONNECTIVITY
"Smartgrid"isaconceptwithmanyelementswheremonitoringandcontrolofeachelementinthechainofgeneration,transmission,distributionandend-useallowtheelectricitydeliveryandusetobemoreefficient.
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© Saifur Rahman 2021
Motivations for a Smart Grid
#WEP2021 CONNECTIVITY
Desire to make the grid smarter, safer, reliable and more cost-effective using advanced sensors, communication technologies and distributed computing.
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© Saifur Rahman 2021
DifferenceBetweenaNormalGrid
andaSmartGrid
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
#WEP2021 CONNECTIVITY
Power Plant
Transmission
DistributionHome
BusinessEnd-use
Appliances
From Generator to Refrigerator
StartingandEndingPointsofaSmartGrid
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© Saifur Rahman 2021
SmartGridBuildingBlocks
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Evolution of the GRID#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Intell igent Interconnected Microgrids#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Merging Power Flow withInformation Flow
Integrated Communications
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
ElectricPower&CommunicationInfrastructures
Central GeneratingStation
Step-Up Transformer
DistributionSubstation
ReceivingStation
DistributionSubstation
DistributionSubstation
Commercial
Industrial Commercial
Gas Turbine
RecipEngine
Cogeneration
RecipEngine
Fuel cell
Micro-turbine
Flywheel
Residential
Photovoltaics
Batteries
Residential Data Concentrator
Control Center
Data network Users
2. Information Infrastructure
1.Power Infrastructure
Source: EPRI 10
© Saifur Rahman 2021
Issues in Smart Grid Deployment
#WEP2021 CONNECTIVITY
•Regulatory•Business •Technical•Security and Privacy
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© Saifur Rahman 2021
RegulatoryIssues
#WEP2021 CONNECTIVITY
•Time varying rates•Who pays the upfront costs•Who owns the data
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© Saifur Rahman 2021
Business Issues
#WEP2021 CONNECTIVITY
•Return on investment•Customer acceptance•Trained manpower
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© Saifur Rahman 2021
Security and PrivacyIssues
#WEP2021 CONNECTIVITY
§Datatransmissionoverthepublicinternet§Datasharingbymultipleparties§Ownershipofthedata
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© Saifur Rahman 2021
TechnicalIssues
#WEP2021 CONNECTIVITY
•Servicemonitoringandrecovery•Remotemeterreading&billing•Transformer/Switchgearloading•Peakloadreduction•Renewablesintegration•Demandresponseapplication
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© Saifur Rahman 2021
Electrical Load Profile in Virginia, USA
#WEP2021 CONNECTIVITY
Peak loads exceed 16,000 MW only 5%
of the time
Peak load of 19,140 MW
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© Saifur Rahman 2021
Electrical Load Profile in KSA in 2016
#WEP2021 CONNECTIVITY
Peak load 66,131 MW
95% of peak 62,816 MW
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© Saifur Rahman 2021
Peak Load and itsDuration
#WEP2021 CONNECTIVITY
• In the US highest 20% of the load happens 5% of the time • In Australia highest 15% of the load happens 1% of the time• In Egypt highest 15% of the load happens 1% of the time• In Saudi Arabia highest 5% of the load happens 0.75% of the time
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© Saifur Rahman 2021
Changing Landscape forthe Electric Utility
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
In-depth Look at Solar PV in KSA
#WEP2021 CONNECTIVITY
2-MWRoof-topSolarPVplantatKAUST20
© Saifur Rahman 2021
Solar PV Panels in Saudi Arabia
#WEP2021 CONNECTIVITY
RealityCheck21
© Saifur Rahman 2021
Solar PV Array (100kWp) in Riyadh Area
#WEP2021 CONNECTIVITY
September
July
Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7
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© Saifur Rahman 2021
Solar PV Panel CleaningCost and Frequency
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
How Can the Smart GridHelp
#WEP2021 CONNECTIVITY
Ithelpstointegrateintermittentsourcesofgenerationintotheelectricpowergrid.
Shorttermloadcontrolforalargenumberofend-usedevicesthroughdemandresponsemakesitpossibletogetquickloadrelieftomatchfluctuationsingeneration.
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© Saifur Rahman 2021
Demand Response
#WEP2021 CONNECTIVITY
DemandResponseisacustomeractiontocontrolloadtomeetacertaintarget.Herethecustomerchooseswhatloadtocontrolandforhowlong.
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© Saifur Rahman 2021
Selective Control ofAppliances
#WEP2021 CONNECTIVITY
Two components: 1) HEM unit and 2) load controller box
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© Saifur Rahman 2021
IoT-based BuildingAutomation Systems
#WEP2021 CONNECTIVITY
• In KSA the roof-top solar is gaining popularity• Roof-top solar helps with mitigating peak loads• Building Automation Systems (BAS) help to maintain
comfortable/healthy indoor environment• Low-cost customizable BAS systems is needed
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© Saifur Rahman 2021
IoT Device Integration for BuildingAutomation System (BAS)
#WEP2021 CONNECTIVITY
Sensors/PowerMeters
Plug Load Controllers
Lighting Load Controllers
CT30 (WiFi)
CT50 (WiFi)
CT80 (ZigBee
SE)
ICM(WiFi)
RTU (Modbus)
VAV controller (Modbus)
Nest(WiFi)
Philips Hue(WiFi)
Light switch(WiFi)
Step-dimmed ballast
(ZigBee)Lighting load
controller(BACnet)
Smart plug(WiFi)
Smart plug(ZigBee)
Plug load controller(BACnet)
Power meter(BACnet/Mod
bus)
Power meter(Modbus)
Occupancy sensor
(BACnet)
Light sensor(BACnet)
www.bemoss.org
www.bemcontrols.com 28
© Saifur Rahman 2021
VT Classroom under Real-timeMonitoring
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Indoor Envrionmental Monitoring
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Energy Savings fromLighting Control
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Managing Battery Storagefrom a BAS Platform
#WEP2021 CONNECTIVITY
5 kW 12 kWh
Battery Cells
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© Saifur Rahman 2021
Battery Storage Data Access from a BAS
Network
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
Roof-top Solar Photovoltaicsat Virginia Tech
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
#WEP2021 CONNECTIVITY
BAS for a Campus-wideApplication
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© Saifur Rahman 2021
New Paradigm for thePower System
#WEP2021 CONNECTIVITY
•Historically: Demand driven supply (supply responds to demand)
•New Reality: Supply driven demand(demandneedstoadjusttomeetfluctuating
supplywithhelpfromstorage)
THESMARTGRIDECOSYSTEM
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© Saifur Rahman 2021
The Smart GridEcosystem
#WEP2021 CONNECTIVITY
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© Saifur Rahman 2021
THANK YOU
Prof.Saifur Rahman
VirginiaTech38