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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

Unrestricted © Siemens Industry, Inc. 2018

Siemens viewpoint: Plug to Grid™

Charging Station Communications Low Voltage Gear Metering Site Packaging Microgrid Control(s)

Software Platform

Restricted © Siemens AG 20XX Page 3

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


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


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%)


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


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


Looking forward to working with you

Celia Dayagi EV Infrastructure Lead Energy Management Division

Phone: +1(770)326-2092 Cell: +1(404)860-4842 [email protected]

usa.siemens.com/transportationelectrification

mailto:[email protected]

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