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Solar Powered EV Charging Tata Power Delhi Distribution Ltd

2

Background

Facts ~1.5 Lac E-Rickshaws plying in Delhi;

Charging for about 8 to 10 hrs - for a running distance of ~ 80 kms

Mostly operated by those residing in JJ clusters and Unauthorized colonies

Informal charging infrastructure charging around Rs. 100/- per E Rickshaw per day

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Current E-Rickshaw Charging Practices in Delhi

• Carried out at open/unutilized space without any permission

• Direct theft of electricity by illegal tapping of distribution network

• Unsafe operating conditions with risk to human life and equipment

• Crude and cheap chargers combined with variable charging

duration leading to reduced battery life

• Few operators charging from Domestic Connections

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Identified 14 primary locations

where charging is being done

currently

Nearly 124 rickshaws being

charged regularly

Zones have been instructed to

identify theft prone points; teams

deployed at sit

E-Rickshaw Charging locations in TPDDL area

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Possible Models for E-Rickshaw Charging based upon PV (1/2)

Model Name Highlights Challenges

Model-1

E-Rickshaws charging

stations with Solar PV

plant at same location

Proposal for centralized

location where maximum

no. of E-Rickshaws are

being charged & Solar PV

be installed on the rooftop

Approval from Land

owning agency

Space available for

Parking

Model-2

E-Rickshaw charging

stations with Solar PV

plant at different

locations

Proposal for installation of

PV solar on different Govt.

buildings locations where

maximum E-Rickshaw are

plying in the vicinity ; e.g.

DDA shopping complex/

Metro stations/ other

locations and set up of

charging infrastructure at

different locations

Involvement of DERC

/DDA/ other Govt.

Buildings

Space constraint with

DDA

Ownership and Parking

Problems at different

charging locations

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Possible Models for E-Rickshaw Charging based upon PV (2/2)

Model Name Highlights Challenges

Model-3

Central Charging stations

for batteries of E-

Rickshaws

Central charging stations

for charging the batteries

of E-Rickshaws and

replacement of batteries

after charging

Very Few Vendors of E-

Rickshaw working with

battery replacement

model

Time taking process,

Ownership of charging

stations

Model-4Rooftop Solar on E-

Rickshaw

Installation of PV on the

hood of E-Rickshaw

Less charging of E-

Rickshaw during

continuous moving of E-

Rickshaw

Theft of PV Modules

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Model 1 Illustration : E-Rickshaws charging stations with Solar PV plant at same location

Distribution Substation

Centralized charging Station with rooftop solar

Meter

E-Rickshaws

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Model 2 Illustration : E-Rickshaw charging stations with Solar PV plant at different locations

v

Distribution Substation

E-Rickshaw charging Station

Meter

v

Solar RT Panel on Govt. BuildingSolar RT Panel on School Building

Solar RT Panel on Metro Station E-Rickshaws

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Plan & Coverage

• Solar plants needs to be set up at various locations incoordination with government/private agencies.

• Such locations should be evenly located throughoutTPDDL operational area.

• Meters will be installed at these locations to monitor theconsumption.

• Installation of charging stations will give rise toemployment through collection of parking chargesalong with Solar plant maintenance at the said areas.

• The project will cover most of the areas with high ERickshaw density.

• Metro Parking areas will also be covered in order toreinforce day charging also resulting in increasedferrying of passengers and hence more earning.

• Charging Stations will also be set up near toconsumption areas like JJ Clusters in order to avoidpower theft at night.

• Most of the contractors giving E Rickshaws on rent willalso be encouraged for deployment of suchinfrastructure.

• Most of the charging stations will be deployed nearsolar plants.

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Monitoring

• All the charging stations will be deployed with meters

• Billing of these charging stations will be done through

group metering concept as per net metering regulations

of DERC.

• Special chargers to be deployed in order to avoid usage

of electricity for any other purpose.

• In the first phase of this project, charging stations will be

kept at authorized parking through direct or indirect

supervision of consumers.

• The charging stations will be under constant vigil of

TPDDL zonal authorities on weekly basis to avoid any

damage and reporting of issues.

• The solar plants to be deployed in order to offset the

consumption will also be monitored on regular basis to

study any downturn in production due to maintenance

issues.

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Sustainability

• TPDDL intends to make charging stations a sustainable model

which will be on PPP basis.

• The charging stations will be deployed by TPDDL through

support from MNRE.

• The Charging Stations will be kept under supervision of

contractors or other authorized persons.

• Such supervisors can earn through parking charges due to

parking of E Rickshaws at night.

• Most of the charging stations will be deployed near solar

plants so that authorized personnel can earn through regular

maintenance of solar plants in addition to charging stations.

• The model will also save the infrastructure from damage and

other illegal activities which cannot be foreseen as of now.

• The model will be reviewed on quarterly basis to understand

the viability of this model after coming into operations.

• Regular feedback will also be taken from charging station &

solar plant supervisors to understand day to day problems and

the action on the same will be taken on regular basis.

• Reports will also be submitted to MNRE on yearly basis in

terms of consumption of charging station and generation of

solar plants on annual basis.

12EV Technology with Smart Grid Integration

Vehicle to gridGrid to Vehicle

• EV manages decrease in RE

generation by supplying back

the stored energy.

• Communication and charging

infrastructure help in vehicle to

grid transfer of electricity

• .

• Distress signal communicated

to EV for supplying its stored

electricity to grid. In response

EV will be discharged to

support the power shortage.

• EVs absorbs excess RE generation for

charging their batteries.

• Communication channel and smart

charging infrastructure help in grid to

vehicle transfer of electricity

• Pricing signals adjusted according to

the RE generation so there is an

incentive for shifting charging of EV at

that time. For example, low pricing will

reflect high RE generation which will

initiate charging of EV.

Electric vehicles use electric motors to drive their wheels and derive some or all of their power fromlarge, rechargeable batteries. These batteries can be utilized as reserves for enabling grid integration ofRE.

13Electric Vehicles Case Study: Nanyang Technological University

(NTU), Singapore campus

Laboratory of Clean Energy Research (LaCER) at the NTU conducted an analysis to assess suitability of PHEVs in a campus scale micro

grid. Impact of PHEV integration in smart grid with renewable energy besides the conventional thermal power plants and diesel

generators was observed.

Without considering PHEV

integration

• Wind energy is used primarily as

it is utilized at zero cost.

• Diesel and thermal generators are

used to balance wind generators

With PHEV integration

• Excess wind energy generation is

stored in the PHEV battery

(charging, G2V) and returned

back when generation is less

(discharging, V2G)

• Diesel and thermal consumption

is lower.

Result

In case of excess wind energy, batteries of

the PHEV is charged. These batteries of the

fleet are discharged when wind generation

is low to support the grid.

OPTION 1 OPTION 2

RESULT

OPTION 1 OPTION 2

Source: School of Electrical & Electronic Engineering, Nanyang Technological University,” 2009

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Roadmap

• Replication of model in case of

success throughout TPDDL

operational Area.

• Exploration of other models to

support the cause.

• Creating of infrastructure in

Smart parking of Smart Cities

• Supporting operations and

sustainability of Electric

Vehicles

Thank You