Summary
"Electric vehicles for ancillary services" examines the impact of electric vehicle (EV) charging on the South African electricity grid and explores the potential for managed charging strategies to enhance grid flexibility. EV adoption has grown in South Africa, albeit at relatively slow pace. In the same period, South Africa’s electrical energy supply has faced mounting challenges, primarily from supply constraints. Additional renewable energy supplies have assisted to some extent, but they have simultaneously added to the complexity of operating and managing the national grid. The local supply utility, Eskom, is therefore in need of ancillary services that can assist in providing its customers with a stable and reliable energy supply.
Read more Read lessThe research assessed the local South African EV market, since the available energy resource potential depends on a sufficiently large uptake of plugged-in EVs. The potential for ancillary services, that would be applicable to the power utility are then assessed. Finally, the various charging strategies, including timed charging, dynamic smart charging, and Vehicle-to-Grid
(V2G) technologies were explored to arrive at a potential implementation strategy.
EVs can then be viewed as a distributed energy resource (DER) or variable load that can be used to provide ancillary services such as frequency control, voltage regulation and demand management or demand response. These services could be accessed using pricing signals (tariff applications), aggregation, V2G charging or a combination of these options.
The research concludes that there are sufficient potential ancillary services benefits associated with managed EV charging for Eskom to proceed with the development of a managed charging strategy. The strategy would include V2G technology and would require a suitable internet of things (IoT) gateway to facilitate the energy transactions. The paper defines a range of managed charging options for the provision of ancillary services in the South African context.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C6_10697_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | South Africa |
| Study committees | |
| File size | 501 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
CHAPMAN Darryl - Eskom; MADHOO Hinesh - Eskom
Keywords
