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VTA's EV bus and Smart Energy Management

System

Gary Miskell, Chief Technology/Innovation OfficerSanta Clara Valley Transportation AuthoritySeptember 10, 2018

Session 5: Strategies for Getting Started with ZEB’s

A.alley Transpor~ation

Authority

Electric Buses

“About 279,000 barrels a day of fuel won’t be needed this year due to EV’s” Jeremy Hodges Bloomberg Technology

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Proterra battery-electric busesE2 Series with 440 KWH energy capacity Plug-in Charging @ < 4.5 hr. to charge

VTA ZEB program will help meet ambitious state goal of 1.5 million zero emission vehicles (ZEVs) on California roadways by 2025.

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VTA Cerone Yard

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Averaging $450K per year

Maintenance Mid Life Overhaul

Operations/Dispatch

960 KWH Solar1200 KWH Solar

675 KWH Generator650KWH Generator

1,300 KWH Generator

6 Smart Chargers5 Smart Chargers

I O thly

150000

$11250

7 00

37500

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Electric Buses – Energy Cost Per EV bus = $7.0K to $10.2K of electricity per yearDepot evening Charging only

First 5 $ 35.0K $ 51.0K25 buses $175.0k $225.0k

Extended operation with 2 Depot charging cycles AM run => Mid day charge => PM run => Night Charging

VGI project 5% to 20% Impact

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VTA working with Prospect Silicon Valley, and Bay Area tech companies to pilot a cutting-edge system that will manage charging and energy consumption on electric buses while reducing the impact on the state’s electricity grid.

Funding from the California Energy Commission will serve as a major case study for transit agencies throughout the country

Connected & Making Real Time Decisions

Vehicle to Grid Integration (VGI) Collaboration: PARTNERS

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ENERGY COMMISSION

OSPECT Silicon V y

CALIF NIA ENERGY A alley

Transpor~ation Authority

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PRDTER A (?~ E ERGY SOLUTIONS

nova I WORKFORCE DEVELOPMENT

T apeze Z Allianc

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Primary Goals of the VGI Solution

1. Ensure buses are charged and ready to go before pullout time2. Provide visibility into charging process3. Send alerts when issues in the charging process or during daily operation need to be addressed4. Support the assignment of bus to block process5. Minimize PG&E utility bill6. Simulate Grid interactions with system 7. Simulate New Block & Charging Options

Battery MgmtPower Supply

Bus Charger

Data Mgmt

Physical Assets

LocalSystems

CloudSystems

ChargePointServices

KisensumServices

TrapezeCleverDevices

Clever Devices

SAP

UtilityServices

UtilityMeter

GridElectricityData

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Leverages the National Renewable Energy Lab’s expertise in analysis and modeling of Electric Vehicles

Analysis Development Develop the analytic Develop operational & cost models

Models being used to predict and recommend operational parameters during the pilot and post implementation analysis to validate the effectiveness.

Analyze operating conditionsRecommendations.Fleet wide Analysis

Mid day charge

Operational Analysis and Simulation Strategy

Figure 1: Comparison of distance versus travel time for each block

InputsTrapeze-FXTrapeze-OpsSAPChargePointClever DevicesGrid SignalsElectric MeterProterra Bus

ChargePoint

CleverDevice

Kisensum - EMP

SAP

Proterra

Trapeze-OPS

Trapeze-OPS

PG&E

OutputsTrapeze-OpsChargePointClever DevicesOperators

So What is the Big Deal? Data Flow & Connected

Core Application = KisensumEMP = Energy Management Platform

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Chargifl1 Dashboard

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Utility r ISO

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What Are The Major

Innovations?

• Creating charge plans that support

more buses than charge stations

• Energy Management Platform that

interoperates with VTA and Grid

systems

• Dashboard and alerting system

supporting vehicle Charging &

operations NEXT STEPS

Smart Microgrid +Second life Li-Ion

Energy Storage

Expanded Solar

• Realtime cost minimization process through

demand leveling and Time of use aware charging

• Performing Grid Service simulations while not

jeopardizing the bus charging operations

ell Charger Details

All Avail le Charg11g

Out: Estl~cd Charger • Status Completion PoWer(kW) soc TB"!l"ISOC Rmnge Target Range Block Ne>et BUS

#0 0 chargng 0 / :40 PM 8 •• 63 97 14 841 146

#1 11 cha~ 07:21 PM 13 62 72 66 2• B52 78

#10 erro,

#11 11 char~ 06 :36 PM B52 78

112 12 ChllronQ 07:29 PM 853 112

#13 vanable

#14 Mi blc

#15 cffl ine

#16 16 eh:i:rgi,g 06 -:Z4 PM 867 83

#17 17 charqng 0 7:01 PM 858 114

,1e 8 ch•'lJllll 04 -58 PM 849 128

#111 111 char~,-ng 0 5"52 PM 8 0 •&

•2 2 charqng 0 5:01 PM 843 67

#20 10 chargng 06 :04 PM ~ - 8~1 94

#21 or llne

#22 2 charging 05:4 6 PM 15 & JS 96 3 B43 67

#23 av.i"lilble

1'U.O.O ,_.~Of;t"•~• • cN'jrsr, t-•TJ• r• . ) 0 6"66 PM 10 t J 86 83 27 845 64

Dashboard: Charger Status

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