SAE J2836, J2847, J2931, J2953 PEV Communications Update

Transcription

1 SAE J2836, J2847, J2931, J2953 PEV Communications Update National Electric Transportation Infrastructure Working Council (IWC) June, 2012 Rich Scholer Task Force Chairman 1

2 DC Charging Document Status J2847/2 - Communication Between Plug-In Vehicles and Off-Board DC Chargers In SAE formatting (as of ), then MVC ballot, then publication J2931/1 - Digital Communications for Plug-in Electric Vehicles Completes Hybrid ballot , then moves to formatting, then publication. J2931/4 - Broadband PLC Communication for Plug-in Electric Vehicles Completes Hybrid ballot , then moves to formatting, then publication. 2

3 DC Charging Schedule 2012 Apr May Jun Jul Aug Sep Oct SAE Communication Document Summary SAE Task Force Topic J2847/2 (DC Charging) Started , ended J2931/1 (Stack info) Started , ended J2931/4 (PLC Protocol) Started , ended J2847/2 Comments SAE Hybrid Committee Ballot - DC Charging J2847/2 Started , ended J2847/2 Affirmation Started , ended J2931/1 Started , ends J2931/4 Started , ends SAE Formatting J2847/2 Started J2931/1 Planned for J2931/4 Planned for MVC Ballot - DC Charging (J2847/2 only) J2847/2 Publish J2847/2 (DC Charging) - Recommended Practice (RP) J2931/1 - Techical Information Report (TIR) J2931/4 - Techical Information Report (TIR) 3

4 PLC Test Status EPRI/ANL/PNNL PHY/MAC testing completed in March, 2012 ANL Interface and system testing continuing ISO15118-J2847/2 stack (layer 3-6) and a development layer 7 application - tied to the system controls of the BTCPower EV Pump (modular scalable 30kW/60kW/90kW) DC fast charge station that has both (under development) J1772-DC combo SEP2.0 stack implementation on HPGP, demonstrated demand response event 4

5 SAE Testing & Demo Configuration ALG Meter ESI ZB SEP1.x SEP2.0 WiFi Metering data -> Gateway ESI DR and Price-> SE2.0 WiFi HAN Embedded WiFi Laptop Load Control Applications: Metering Load Control Thermostat EV 5

6 AC/DC Communication System Structure Messages/Control Messages/Control Object/Transfer Layers CAN Bus DC Power Supply DC EVSE DC Power PEV BECM Object/Transfer Layers CAN Bus CAN CAN SECC SPI HPGP Adapter BB OFDM HPGP Adapter SPI EVCC 6

7 ANL: Standards/Field Testing Status Technology Showcase/Demonstration at IWC - EVCC/ESCC on physical control pilot wire - quasi-din70121 spec stack implementation - implemented on J v5 DC coupler charger 7

8 ANL PEV-Smart Grid Interop Center Status ANL Interoperability Center Has 6 Lab Spaces: 1) Embedded Controls Lab: Bench top experiments, such as J2931 hardware development/validation for communication/network/power flow standards. 2) Smart Home Lab: Dedicated to interfaces with other Smart Grid enabled devices, vehicle charging considered another appliance. Home area networks and gateway device studies, cross talk, throughput, etc. 3) Vehicle Lab: Vehicle access capable location; extension of embedded controls lab. Contains lift for configuring/instrumenting vehicles, chassis dyno, vehicle sized RF cage, and high power (400A/480v) electrical feeds for fast charging, etc. 4) EV Charging Pilot/Campus Facilities: ANL is a closed facility with ~3000 employees/commuters and ~ 1500 acres. Charging pilot includes field trials, in a controlled environment, on actual EVSE installations, social issues of parking allocations/etiquette of reservations, etc. 5) Battery HIL Lab: Battery Hardware-in-the-Loop; ABC-170 battery cycler, thermal chamber, Arbin cycler, dspace controls. 6) Motor HIL Lab: HIL motor test bed. ABC150, dspace controls. Lindgren ETS RF Chamber 8

9 ANL Standards Related Next Steps (October time frame goals) Moving on from June IWC Demo, connect an NRTL certified J1772-v5 DC charging station to a lab test vehicle; end to end charging communication and control/sequence. Coordinate with ISO15118-PT4 injection committee on test data results on (J1772 -v5) physical DC charging system; peer review (Attempt) DC coupled local storage with above experiment, enabling local DC charging peak shaving and grid-to-home value proposition study 9

10 Takeaway question: If There are Three Captains, Who is Driving the Boat? Literally stated, there are three energy controlling entities 1) The supplier- Utilities 2) The middle man- EVSE 3) The end user- vehicle owner/operator Using the boat metaphor; The utility can claim that it owns the water. The EVSE can claim that it owns the canal. The vehicle owner/operator owns the boat. Who gets to drive the boat? 10

11 SEP 2.0 Status Public Release 0.7 dated March 2011 Current Release 0.9 Interoperability events 5 Events completed (Event 5 completed 6/28) 1 Week every month 1-2 events to be completed 1 st product Certification end of November 1.0 Specification end of December

12 J2836/3 - PEV as a DER J2836/3 will include definition of information (messages) and use case tables to the same level as in the original J2847/1. Message Use Case Requirements S = Standard, required to achieve functionality described by Use Case O = Optional, may be required to participate in advanced functions. U1 U2 U3 U4 U5 Identifications Vehicle ID S S S S S Customer ID and/or PIN EUMD ID S S S S Communications Authenticated S S S S S Smart PEV Present S S S S S EVSE Override Request S S S S S EVSE ID Premises ID Energy Requests Energy Request (amount) S Power Request (rate) S Energy Available (amount) S Power Available (rate) S Power Schedule S Energy Delivered (charge kwh) S S S S Timing Information Time Charging to Start S S S S S Pricing Request Scheduled Prices S S Load Control Load Control S Vehicle Info / Status Time at Connection S S S S S J2847/3 will follow format of new J2847/1 and show actual SEP 2.0 implementation. Step Description 1 Client GETs the TariffProfile from the Pricing Server Client sends the following request: GET /tp/3 HTTP/1.1 Host: {hostname} 2 Pricing server responds with the TariffProfile Server sends the following response: HTTP/ OK Content-Type: application/sep+xml <TariffProfile href="/tp/3" xmlns=" <mrid>799794f4620b17e00000e566</mrid> <description>pev TOU Rate</description> <currency>840</currency> <pricepoweroftenmultiplier>- 6</pricePowerOfTenMultiplier> <primacy>0</primacy> <ratecode>tou-d-pev Baseline 6</rateCode> <RateComponentListLink all="1" href="/tp/3/rc"/> <servicecategorykind>0</servicecategorykind> </TariffProfile> 12

13 J2836/3 - Use Cases DER use cases to be based on IEC object models for photovoltaic, storage, and other DER inverters. U6 Basic DER based on IEC Function INV4 (Active Power). U6 has more functionality and information than INV4. Working with IEC TC57 WG17 to harmonize object model for U6 and INV4. U7 Advanced DER adds IEC Function INV3 (Power Factor). U7 also adds selected Autonomous Functions (such as Volt-VAR, Volt-Watt, Watt-Frequency) 13

14 J2836/3 - Ballot status Smart Energy Profile 2.0 team focus is on completion of V0.9 Re-ballot & interops. Information on U6 provided to SEP 2.0 DER team in May. SEP 2.0 DER Function being driven by solar PV community - working to finish it Requested that U6 and commanded PF (INV3) be separated from full DER Function and merged with Charge Reservation as a Basic DER Function. Expect to complete document for SAE review by end of August. 14

15 J2836/5 - Customer to PEV & HAN 15

16 J2836/5 Customer to PEV Network Customer can use mobile or In-home display (IHD) devices to sent/receive vehicle charging information. High level communications should be protocol agnostic to the PEV. Customer interaction includes: Select options based on price and energy needs (SOC & time) Starts/ends charge Starts/ends preheat/precool cycles (PEV and/or battery) Views status (SOC) Receives alerts of unplanned events/changes 16

17 J2836/5 HAN (EVSE) to PEV Interaction Utility interacts with HAN or EVSE Communication per the J2836/1 messages and SEP2 function sets Pricing, DR/Load control, etc. to EVSE. Decisions regarding conflicts Time charge needed has changed Customer decide to leave early and planning to change the time charge needed from mobile device, and it might change the EMS/HAN charge time settings. DR or pricing send to home (HAN), not to PEV Opt out or accept etc. 17

18 J2836/6 - Wireless Charging Scope of J2836/6 is Use Cases for Support of Wireless Charging across the wireless communications interface between the EV and EVSE. Communications between the EVSE and Grid, the EVSE and the user and the service provider and the user will follow the same paradigm as for conductive charging. Draft to be circulated for final comment 3Q. 18

19 J2836/6 - Selection of PHY and MAC Wireless PHY and MAC selection currently investigating use of DSRC in order to leverage vehicle ITS communications capabilities. Currently there appears to be some uncertainty as to whether ITS will use p as basis for DSRC Currently there is also discussion as to whether to use the DSRC band or another frequency band (e.g. 2.4 GHz) 19

20 Wireless Charging Use Cases 20

21 Charger Discovery Vehicle Alignment Charging Wireless Charging Use Cases Use Case Descriptions Allows the user to discover the location of an available wireless charger in close proximity. Supports correct alignment of vehicle charge unit with the base unit (located underneath the vehicle). Power Transfer Initiation: Determine charging can safely occur and negotiate charging parameters Power Transfer: Actual charging phase, charging process is monitored and controlled by both the vehicle and EVSE equipment. Monitoring & Diagnostics Emergency Shutdown Power Transfer Termination: Orderly termination of charging process and completion of session. This is a utility use-case that communicates information in support of detection of events that impact the ability to continue the charging process. Events may be transient and charging may resume after the event clears. This use case supports immediate and safe shutdown of the charging process upon occurrence of emergency conditions. The connection can only be restored by authorized personnel. 21

22 The End Questions? 22

23 B A C K U P 23

24 Definitions Battery Storage Direct Charge/Discharge Management Function (IEC Function INV4) This function requests the storage system to charge or discharge at a specific rate (as a percent of max charging or discharging rate). To account for diversity in the size of storage systems, the function requests a percentage quantity based on the capacity of the system. For active power out requests (reverse power flow - storage discharging), the percent is relative to the current value of the maximum discharge rate. For active power in requests (forward power flow -storage charging), the percent is relative to the current value of the maximum charging rate. It is acknowledged that the discharging capacity of the inverter and the charging capacity of the charger may differ. A timeout period is included for reverting to the default state of the inverter-based DER system, to ensure that a missed or lost command does not impact normal operations beyond that timeout period. Inverter-based DER systems which can manage energy production through additional generation reserve and/or storage capabilities can also respond to requests to increase or decrease this energy production, although it is understood that they will always be in ultimate control of what actions they take and that these functions are requests to perform certain actions if feasible within pre-specified constraints. For example, a storage system cannot charge when the storage element is full nor can it discharge if at the storage reserve limit. This is the most essential DER function for a PEV. However, it is not sufficient for use with a PEV. It is based on stationary storage and does not provide the full capability needed for a PEV. This function will be included in U6. Fixed Power Factor Function (IEC Function INV3) Fixed power factor will be managed through issuing a power factor value. In addition, a ramp rate (change versus time) and a time window within which to randomly start will be included so that not all inverter-based DER systems change state abruptly or at the same time. A timeout period is included for reverting to the default state of the inverter-based DER system, to ensure that a missed or lost command does not impact normal operations beyond that timeout period. The INV3 function will be included in U7. 24

25 Connect/Disconnect Function (IEC Function INV1) Definitions (cont) The inverter is commanded to disconnect from the electric power system using an actual switch and not by commanding the inverter power output to off. This function is not related to intentional islanding, and refers to the management of a switch that separates at the DER, leaving customer premises loads connected to the grid. Because the vehicle bidirectional converter is also its charger it must always remain connected. The EVSE can disconnect the PEV using its internal breaker, but this should only be allowed by a customer EMS with no control outside the premises. This DER function is not needed for a PEV. The EVSE will need a function similar to this to allow control by a customer EMS. This EVSE management function will also be needed to set the control pilot. Maximum Generation Limit Function (IEC Function INV2) This function sets the maximum generation level as a percentage of the DER capacity. There is a specific function for managing a storage DER so this function is useful only for DG devices. The optimal generation level for a PEV is zero. It will only discharge above zero if it is commanded and this is the purpose of the INV4 function. This function is not needed for a PEV. Battery Storage Price-Based Charge/Discharge Function (IEC Function INV5) This function provides a pricing signal (actual price or some relative pricing indication) from which the inverter-based DER system may decide whether to charge the storage or discharge the storage, and what rate to charge or discharge. This is not an essential DER function for a PEV. The Pricing functions of SEP 2.0 provide this capability for charging. It is not likely that a PEV would engage in energy arbitrage and discharge at high prices and charge at low prices. It is more likely that the home energy management system would deal with the price decisions and engage the PEV using the direct INV4 management function. Price based discharging is not expected to be beneficial for a PEV and INV4 is expected to be used to control all discharging for PEVs. 25

26 Background Major Documents and Functions 1. J Use Cases (establishes requirements) ISO/IEC J2847 Messages, diagrams, etc. (derived from the use case requirements) ISO/IEC J2931 Communication Requirements ISO/IEC J2953 Interoperability ISO/IEC , 5 26

27 Summation of SAE Communication Standards J2836 General info (use cases) J2847 Detailed info (messages) Dash 1 Utility programs * Dash 2 Off-board charger communications* Dash 3 PEV as a DER Dash 4 Diagnostics Dash 5 Customer to PEV and HAN/NAN Dash 6 Wireless charging/discharging J2931 Protocol (Requirements) Dash 1 General Requirements* Dash 2 InBand Signaling (control Pilot) Dash 3 NB OFDM PLC over pilot or mains Dash 4 BB OFDM PLC over pilot or mains Dash 5 Telematics Dash 6 DSRC/RFID (wireless charging) Dash 7 - Security Dash 1 Utility programs * Dash 2 Off-board charger communications * Dash 3 PEV as a DER Dash 4 Diagnostics Dash 5 Customer to PEV and HAN/NAN Dash 6 Wireless charging/discharging J2953 Interoperability Dash 1 General Requirements Dash 2 Testing and Cert Dash 3 * Published 27

28 Document Interaction Use Cases Requirements Protocol Utility Programs DC Charging J2836/1 J2847/1 J2836/2 J2847/2 Basis J2931/1 PEV as a DER Diagnostics J2836/3 J2847/3 J2836/4 J2847/4 J2931/4 BB OFDM (PLC) Customer to PEV and HAN/NAN Wireless Power Flow J2836/5 J2847/5 J2931/5 J2836/6 J2847/6 J2931/6 J2953/1 Interoperability, J2953/2 Test Procedures J2931/7 Security Telematics DSRC (& RFID) 28

29 AC Charging - Document Interaction Use Cases Requirements Protocol Utility Programs DC Charging J2836/1 J2847/1 J2836/2 J2847/2 Basis J2931/1 PEV as a DER Diagnostics J2836/3 J2847/3 J2836/4 J2847/4 J2931/4 BB OFDM (PLC) Customer to PEV and HAN/NAN Wireless Power Flow J2836/5 J2847/5 J2931/5 J2836/6 J2847/6 J2931/6 J2953/1 Interoperability, J2953/2 Test Procedures J2931/7 Security Telematics DSRC (& RFID) 29

30 DC Charging - Document Interaction Use Cases Requirements Protocol Utility Programs DC Charging J2836/1 J2847/1 J2836/2 J2847/2 Basis J2931/1 PEV as a DER Diagnostics J2836/3 J2847/3 J2836/4 J2847/4 J2931/4 BB OFDM (PLC) Customer to PEV and HAN/NAN Wireless Power Flow J2836/5 J2847/5 J2931/5 J2836/6 J2847/6 J2931/6 J2953/1 Interoperability, J2953/2 Test Procedures J2931/7 Security Telematics DSRC (& RFID) 30

31 RPF (on-board conversion) - Document Interaction Use Cases Requirements Protocol Utility Programs DC Charging J2836/1 J2847/1 J2836/2 J2847/2 Basis J2931/1 PEV as a DER Diagnostics J2836/3 J2847/3 J2836/4 J2847/4 J2931/4 BB OFDM (PLC) Customer to PEV and HAN/NAN Wireless Power Flow J2836/5 J2847/5 J2953/1 Interoperability, J2953/2 Test Procedures J2931/7 Security J2931/5 J2836/6 J2847/6 J2931/6 Telematics DSRC (& RFID) 31