Summary
The integration of Energy Storage (ES) Systems, like batteries and supercapacitors, in power systems is accelerating globally due to their ability to enhance the flexibility and efficiency required to integrate intermittent renewable energy sources (RES). With decreasing costs and improved technical features (e.g., energy density, safety), large-scale ES installations (20 to hundreds of MWh) are now common at both distribution and transmission levels.
Traditionally, ES systems use 2-3 Level VSCs, but for higher voltage and power applications, modular topologies such as Modular Multilevel Converter (MMC) technology is preferable due to its flexibility and efficiency. MMCs allow storage integration through their valves. ES integration in DC systems like HVDC transmission and DC grids is explored through various approaches, including AC side, DC side, and MMC valve integration.
ES systems in HVDC and STATCOM units can enhance network resilience such as fault ride through response, black-start capability, grid-forming capacity, fast frequency support, and network stability. This brochure provides insights for power system stakeholders on large storage systems, converter topologies, modeling, integration options, ancillary services, benefits, and challenges of ES integration in HVDC/STATCOM systems.
Additional informations
| Publication type | Webinars |
|---|---|
| Reference | WBN059 |
| Publication year | |
| Publisher | CIGRE |
| Study committees |
|
| Working groups | WG B4.84 |
| File size | 4 MB |
| Pages number | 72 |
| Price for non member | 50 € |
| Price for member | Free |
Video
Speakers
Hani SAAD, Vajira PATHIRANA, Konstantin VERSHININ, Paul JUDGE, Sascha KUBERA, Anton STEPANOV, Florent MOREL
Keywords
HVDC, STATCOM, Energy Storage, BESS, MMC, Modular Multilevel Converter, Battery, Supercapacitor, Grid forming, Black-start, ES-HVDC, ES-STATCOM
