Resilient Electric Vehicle Charging: REV

Completed

Other Cross-Cutting Technologies or Research(Energy system analysis)
Energy Efficiency(Transport)
Other Power and Storage Technologies(Electricity transmission and distribution)

Applied Research and Development

ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering)

Systems Analysis related to energy R&D (Other Systems Analysis)

Project Contact
National Energy System Operator

Network Innovation Allowance

Ofgem

01 July 2021

31 December 2022

ENA months

£350,000

Power

South East

Network Innovation Allowance

Project Contact, National Energy System Operator

Project Contact, Sygensys

Project Contact, National Grid plc

This project will look to undertake the following scope of work:WP1: Cause (How could EV charging make the grid less stable?)Identify the mechanisms which may impact short term grid stability and recovery from incidents.Failure Modes Effect Analysis to identify key items to investigate more.Define related test cases for EV chargers to quantify relevant performance.WP2: Effect (How big could the impact be on the grid as EV adoption increases?)Consider from LV (Low Voltage) circuit level all the way to national inertia.Model the impact on UK wide grid stability. Power FactoryModel the impact at distribution/LV feeder level.Demonstrate impact of a range of potential incidents.Identify incidents with the significant effect on grid stability.Review limitations of grid and EV charger modellingRisk AssessmentIn line with the ENAs ENIP document, the risk rating is scored Low.TRL Steps = 1 (1 TRL step)Cost = 1 (350k)Suppliers = 1 (1 supplier)Data Assumptions = 3 The project will analyse the impact of EV charging on grid short term frequency and voltage stability, and cascade fault prevention and recovery.An individual charger has a small impact on the grid. So, the analysis will therefore focus on categories of failures which could cause a correlated change by multiple chargers at the same time and/or local area.Brainstorming sessions with multiple stakeholders will be employed to identify the widest possible range of risks.EV charger response to power and control communication faults will be investigated by desk-based research and sample measurement.Identified risks will analysed in via desk research. From this a prioritised list of risks, in the form of an FMEA (Failure Mode Effect Analysis), will be produced for further investigation.Small scale grid simulation studies will be used to address uncertainties in the desk-based analysis. The final outputs will be:A research report on potential causes of instabilityA research report on the effects of instability (NIA Project Completion Report)

Project Resilient Electric Vehicle Charging (REV) will analyse the impact of Electric Vehicle (EV) charging on grid short term (1 cycle to 10 seconds) frequency and voltage stability, and cascade fault prevention and recovery.An individual charger has a relatively small impact on the grid. So, the analysis will therefore focus on categories of failures which could cause a correlated change by multiple chargers at the same time and/or local area.Project outputs will be a failure modes effects analysis, raising awareness of the risks and suggestions for grid code updates mitigating key risks.

19/10/22