Grid-integrated Charging with ISO 15118

Transcription

1 Grid-integrated Charging with ISO Advanced Grid: Integration and Testing DER with Communications ESNA, San Diego, Stephan Voit,

2 Agenda > How to do grid integrated charging: Philosophy of ISO > ISO and Backend IT protocols > ISO and IEC > Learnings from European project PlanGridEV 2016 KnGrid 10/6/16 PAGE 2

3 Design principles of ISO > Have a unique standard, which is accepted worldwide > Make charging for the customer as easy as possible > Respect requirements from EV drivers, energy production (e.g. renewables), and grid > Be open for future enhancements 2016 KnGrid 10/6/16 PAGE 3

4 Philosophy of ISO > Use Control Pilot (CP) and Pulse Width Modulation (PWM) of SAE J1772 (similar to IEC ) for safety > Support of several services > Authentication: External Identification Means (EIM) and Plug nd Charge (PnC) > Handling of digital certificates and electronic signatures > Charging AC (Alternating Current) and DC (Direct Current) > Respecting customer requirements > Allows respecting of availability of capacity and power at (distribution) grid > Allows respecting of price tables from energy (re)seller > (Re)negotiation of a charge profile with new parameters > Value Added Services > Respect security and privacy > Provide enough bandwidth by using PLC technology based on HomePlug GreenPHY > EV acts as a client, EVSE acts as a server 2016 KnGrid 10/6/16 PAGE 4

5 Future development of ISO Second Edition > Correction / enhancement of misunderstood or unprecise definitions > Integration of wireless communication > Integrate a first solution for Reverse Power Transfer (energy feedback) 2016 KnGrid 10/6/16 PAGE 5

6 ISO and Backend IT protocols > Communication with Secondary Actors (SA) is not defined within ISO > Several data structures are defined for data exchange with SA > EU funded project Green emotion started the discussion on how to bring together the best of existing backend IT protocols > At the time common understanding is to start standardization at OASIS, then hand it over to IEC Source: ISO ; Figure 1 Overview with examples of participating actors in the overall scenario 2016 KnGrid 10/6/16 PAGE 6

7 ISO and IEC > IEC TR Ed.1.0:2015 Communication networks and systems for power utility automation - Part 90-8: Object model for electric mobility > Object model was essential influenced by ISO/IEC Joint Working Group ZCAB MMXU MMTR ZCAB ZSAR Logical Nodes AC Supply Equipment MMXU MMTR ZSAR DC Supply Equipment XCBR FSCH XCBR FSCH XFUS XSWI DEAO DESE AC/DC Converter XSWI DEDO DESE DEEV DEEV Elect ric Vehicle Communication Controller AC/DC Converter Battery Mgmt. System (BMS) Elect ric Vehicle Comm. Controller Battery Mgmt. System (BMS) Battery Battery FSCH FSCH DEEV: Electric Vehicle MMTR: Metering XSBI: Circuit Switch DSCH: Schedules DESE: E-mobility Supply Equipment MMXU: Measurement Unit XCBR: Circuit Breaker ZSAR: Surge Arrestor DEAO: AC OutLet DEDO: DC Outlet Logical Node according to IEC Newly defined Logical Nodes Electric Vehicle User Driving and parking needs Mobility service needs New E-Mobility Actors Power System Actors Relationship between Actors Energy flow Electric Vehicle Energy Supplier (Retailer) Energy purchase E-Mobility Service Provider Roaming service offer/request Charging needs Energy purchase Bilateral agreement E-Mobility Clearing House Electric Vehicle Supply Equipment Charging Station Charging limits Building Energy Management System Data exchange Charging Infrastructure Operator Roaming service offer/request Grid congestions Source (top): IEC TR Ed.1.0:2015; Figure 4: Generic role model of relevant actors for smart charging EVs Distribution System Operator Source (left): IEC TR Ed.1.0:2015; Figure 6: IEC Logical Nodes overview, based on [IEEE VPPC2012] 2016 KnGrid 10/6/16 PAGE 7

8 Learnings from European project PlanGridEV [see How to derive grid planning rules for a changing environment? FP7 Call for proposal: Energy MV LV?? Project Consortium: 12 partners including 4 DSOs, renowned research institutions, universities and car manufacturers Duration: June 2013 February 2016 Project budget: Total 7.5 M Distribution Grid Planning and operational principals for EV mass roll-out while enabling DER integration 2016 KnGrid 10/6/16 PAGE 8

9 PlanGridEV: New EV and DER models and tools have been used to analyze the future grid planning problem EV EVSE DER Type of Clearness sampled beta measured data Jan 2013 Feb 2013 Mar 2013 Apr 2013 CS May 2013 Jun 2013 Jul 2013 Aug density Sep 2013 Oct 2013 Nov 2013 Dec EV Charging Profiles DER Models Clearness index Planning Tools KnGrid 10/6/16 PAGE 9

10 BACKUP 2016 KnGrid 10/6/16 PAGE 10

11 Data Communication controls Charging Session for better Integration of renewable Energy Backend System Electric Vehicle EV Supply Equipment (Charge point) Cable connected, CP/PWM ok, ask for service available I want to charge with costs, my authentication ID is 1234 Calculation of charging profile; chosen price table Lock connector; I will charge from 2 AM to 6 AM at 5 kw Charging Offer accepted: I will charge from 4 AM to 6 AM at 11 kw I want to stop charging session; open contactor Signing drawn energy, unlock cable, end of communication Chose highest protocol version, send service list Checking auth. ID, perhaps request at eroaming platform Valid ID can be used for charging up to 22 kw; load & price table enclosed Capacity reservation, perhaps communication with Smart Grid Contactor closed; send start meter reading Special wind offer: 4 AM to 6 AM, price minus 10% Capacity reservation, perhaps communication with Smart Grid Contactor opened Send stop meter reading; please sign meter reading Provide charge data (Service Detail Record) for billing Example: Controlling charging session according to ISO KnGrid 10/6/16 PAGE 11

12 ISO uses P max and Tariff Tables for easy Integration of EVs into Power Grid and Power Production Grid and Power Production Tariff Table TariffStart [Seconds from now] TariffPMax [Watt] EPrice [relative, in %] 100% 70% 80% 100% TariffPMax max. Amp per phase max. Watt TariffStart EPrice 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% TariffStart TariffTableType Currency REL Tariff T1 EPriceUnit 1 (one percent) EPriceMuliplier 1 Source: According to Committee Draft ISO KnGrid 10/6/16 PAGE 12

13 Load Management according to ISO with a Smart fortwo ed 3 connected to an KnGrid Charge Spot EVSE offered charge profile EV chosen charge profile > Charging power was restricted by cable, installation, feed-in and grid transmission capacity to max. 22 kw. > Electricity reseller offered a special price for this charging session at 50 % off, but between 10:30 and 11:00 AM normal price (100 %) had to be paid. During this period EV stopped charging KnGrid 10/6/16 PAGE 13