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DOCKETED Docket Number: 18-MISC-04
Project Title: Vehicle Grid Integration Roadmap Update
TN #: 225121
Document Title: Siemens VGI Panel Comments Oct 30 2018
Description: N/A
Filer: System
Organization: Bonnie Datta/Siemens
Submitter Role: Public
Submission Date: 10/28/2018 1:39:05 PM
Docketed Date: 10/29/2018
Comment Received From: Bonnie Datta Submitted On: 10/28/2018
Docket Number: 18-MISC-04
Siemens VGI Panel Comments Oct 30 2018
Additional submitted attachment is included below.
Observations from Global eMobility™
siemens.com Unrestricted © Siemens AG 2018
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Siemens viewpoint: Plug to Grid™
Charging Station Communications Low Voltage Gear Metering Site Packaging Microgrid Control(s)
Software Platform
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On-demand Journeys start when and from where the user needs them
Shared Shift from individual vehicle ownership to flexible mobility access
Autonomous Vehicles are increasingly self-driving without the need for a driver
Connected Mobility will be increasingly connected in nature
Electric Mobility is powered by electricity rather than fossil fuels
Five key mobility trends
Unrestricted © Siemens Industry, Inc. 2018
The Mobility Sector is Under Disruption …and Electrification is at the Core of this Change
Autonomous
Shared
On-demand
Decentralized
Digitalized
Clean and renewable Electric
Allows for open, real-time, automated communication and operation of the energy system
Makes customers active parts of the system, though requires significant coordination
Critical to long-term decarbonization goal. Mindset shift in society of developed
countries
Increases the overall use of the mobility assets based on customers’ needs
System takes over driving completely for all street types, speed zones, and environment conditions
Journeys start when and from where the user needs them and get more flexible driven by digitalization
Unrestricted © Siemens Industry, Inc. 2018
Suggested “best practices” standards
Open technical standards
Data center to EVSE communications link A port in the EVSE with the ability to plug in a Network Interface Card with minimum options of WiFi and cellular
Data center to EVSE data communications protocols OpenADR for DR signal and OCPP for other data types
Data center to data center protocol OCPI or OICP for sharing customer billing and payment data (interoperability) between EVSPs
EV to EVSE for “Plug and Charge” ISO 15118
EVSE meter accuracy ANSI C12.20 (+/-0.2%) or NIST Handbook 44 Sec. 3.20 (+/-1.0%)
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Technical (Metering and Communications) Standards – Home, MUD, Workplace Charging
EVSP Data Center Utility Data Center
Smart Meter Communications
Network
Smart Meter
Smart Phone
Home Router
WiFi Radio
EVSE EV EVSE EV
Cellular Broad- band
1 2
3 1 2 OCPP and OpenADR 3 SAE J1772 (plug), ISO 15118 (EV to EVSE) 4 IP
Smart Meter
1 2
4
3
4
and
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Technical and Payment Standards – Public Charging
Smart Meter Communications
Network
EVSP Data Center
Utility Data Center
Cellular Broad- band
EVSP Proprietary Payments
Open Payment Systems
Another EVSP Data Center
EVSE EV
3
Joe’s Public Charging
Smart Meter
1 2
4
1 2
5
1 and 2 OCPP and OpenADR 3 SAE J1772 (plug), ISO 15118 (EV to EVSE) 4 Credit Cards 5 OCPI or OICP
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Overview of Sub-metering of EV Charging
Source: Nexant, California Statewide PEV Submetering Pilot – Phase 1 Report
Data Flows CONCEPT Use a sub-meter built into the EVSE to record
consumption for use in billing
Bill using subtractive approach
BENEFITS
Allows tariff to be applied on EV-only basis TOU or hourly pricing without exposing whole home or business to price volatility
Provides actual kWh and cost for power used to charge EV Includes detailed consumption data
Eliminates need to estimate cost using whole-house or whole-business data
Avoids need to provide a separate utility meter and meter box Cost of < $50 vs. $500-1,500 for second meter
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Challenges of Sub-metering
Potential Solution? Note: conceptual only
Meter accuracy Testing
Certification
Not a significant problem
Communications
Uses communications card in EVSE Ethernet, Wi-Fi, or cellular
Cost typically $20-200 per year
Protocol may or may not be standardized OCPP standard used most commonly
Data integration
Specific to each utility Technical interface
Data format
Business processes
Exception management
Difficult and costly for 3rd parties
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Looking forward to working with you
Celia Dayagi EV Infrastructure Lead Energy Management Division
Phone: +1(770)326-2092 Cell: +1(404)860-4842 celia.dayagi@siemens.com
usa.siemens.com/transportationelectrification
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