EV Charging Points. Breakout Session 2

Transcription

1 EV Charging Points Breakout Session 2

2 Session overview This session will cover: EV Policy Environment UK/Scot Gov Policy SSEN Commitments to EV My Electric Avenue Smart EV Project ENA process for Connecting EVs to existing connections Worked example of network assessment for POC containing an EV Feedback Time to get your input

3 ULEV Policy Environment ULEVs will play a part in the governments strategy to meet it s decarbonisation objectives and also local environmental needs Scottish Government Promoting the use of ULEVs and phasing out the need for new petrol & diesel cars and vans by 2032 (UK government has 2040 target) Expand electric charging infrastructure between now and 2022 Create Scotland s first Electric Highway along the A9 ULEV public sector car/van fleet by mid 2020s. Bus fleets by early 2030s Large scale pilots across the country Financial support for local solutions Introducing low emissions zones in 4 biggest cities by 2020 and other Air Quality Management Areas by

4 SSEN s Involvement SSEN are in support of the decarbonisation of the transport fleet. EV storage can help balance renewable variability, particularly local scale. SSEN are delivering a number of measures to ensure the network can cope with the large scale uptake of EV chargers in the future. Priority is for a safe, reliable network. We must develop robust standards around charging. Measures we re taking - My Electric Avenue & Smart EV project SSEN s transition to DSO and use of active management systems help ensure a more efficient use of existing infrastructure 4

5 My Electric Avenue Background DNOs have responsibility to provide a secure and reliable supply of electricity using most cost-effective measures 9m innovation project that tried to replicate the effect that large scale EV uptake would have on the grid 10 groups of 10 customers were recruited to drive EVs It allowed us to monitor the unconstrained use of EV chargers on the LV network Large scale uptake of EV charging would traditionally require expensive, disruptive and timely network reinforcement This allowed us to pilot the use of a new demand side response technology which manages the EV charging by sharing only the available capacity between vehicles

6 My Electric Avenue Findings EV charging points using just 3.5kW chargers doubled household peak demand This huge increase in peak demand is something networks were not designed to cope with Clustering of EVs will cause issues long before the wide spread uptake of EVs 32% of all GB networks will experience issues when EV uptake on a street exceed 40% of households. For the networks in the trial, the feeders would be at 160% thermal capacity utilisation if every house had a charger. (Winter) To manage this, demand side response technology can be used to protect the networks and facilitate more load

7 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Diversified Demand Phase Current (Amps) Revised domestic ADMD including EV charging (3.5kW charging units) 00:00 02:00 04:00 06:00 08:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 00:00 Time of day Residential EV Total Impact of charge management on demand levels during winter weekdays Without charge management Thermal Limit With charge-management 7

8 Smart EV Project New Technical Standards A follow on from My Electric Avenue to facilitate the development and roll out of demand side managed charging Allow for the more efficient use of existing infrastructure and sizeable reduction in investment costs and customer bills/disruption. Smart EV Project will help to develop a national engineering recommendation for connection, charging and control on new EV load. This requires collaboration between DNOs, National Grid, BEIS, Ofgem and automotive industry

9 ENA Process LCT Retrofitting EV chargers We have an obligation to know what LCT is connected to our network Energy Networks Association (ENA) set out a process for connecting EV Chargers to existing connections This helps us to properly record LCT on our network. IET Code of practice outlines the best practice for installers and informs when they must contact the DNO. Adequacy of Supply Assessment Required to be carried out by installer prior to any installation. If it passes this assessment then the installer can Connect & Notify If it fails this assessment then the installer must notify us first. 9

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11 Worked Example POC Identification We will now work through a case study for an ICP/IDNO application for a Point of Connection (POC) Phase 1 of a housing development. 4 houses each with two EV chargers (1x3.5kW and 1x7kW) 11

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