Abstract
Battery energy storage systems (BESSs) need to comply with grid code and fault ride through (FRT) requirements during disturbances whether they are in charging or discharging mode. Previous literature has shown that constant charging current control of BESSs in charging mode can prevent BESSs from complying with emerging grid codes such as the German grid code under stringent unbalanced fault conditions. To address this challenge, this paper proposes a new FRT-activated dual control strategy that consists of switching from constant battery current control to constant DC-link voltage control through a positive droop structure. The results show that the strategy ensures proper DC-link voltage and current management as well as adequate control of the positive- and negative-sequence active and reactive currents according to the grid code priority. It is also shown that the proposed FRT control strategy is tolerant to initial operating conditions of BESS plant, grid code requirements, and fault severity.
| Original language | English |
|---|---|
| Pages (from-to) | 977-988 |
| Number of pages | 12 |
| Journal | Journal of Modern Power Systems and Clean Energy |
| Volume | 10 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jul 2022 |
Keywords
- Battery energy storage system
- electromagnetic transient
- fault ride through
- inverter-based resource
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology