Comparison of transient overvoltage suppression capability of grid-forming converter and synchronous condenser
| Autor: | ZHANG Xing, LI Xu, TIAN Jie, WANG Jianan, DING Yong, LU Yu |
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| Jazyk: | čínština |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Zhejiang dianli, Vol 43, Iss 2, Pp 88-95 (2024) |
| Druh dokumentu: | article |
| ISSN: | 1007-1881 20240201 |
| DOI: | 10.19585/j.zjdl.202402010 |
| Popis: | When faults such as blocking and commutation failure occur in a high-voltage direct current （HVDC） transmission system， they can cause transient voltage fluctuations near the sending-side converter station and lead to the disconnection with power grid. Firstly， the operating principles， response characteristics， and key parameter influences of the grid-forming energy storage open-loop control strategy are analyzed. Then， the reactive response characteristics of the synchronous condenser are analyzed， and a comparison is made between the grid-forming energy storage reactive power control model and the excitation regulation control model. Finally， a semi-physical simulation system is established， including EHVDC， photovoltaics， synchronous condenser， and grid-forming energy storage， to conduct comparative experiments on the effect of suppressing AC transient overvoltage under DC commutation failure. The results indicate that grid-forming energy storage and distributed synchronous condenser with the same capacity can achieve similar effects in terms of reactive transient response speed and the ability to suppress AC transient overvoltage. |
| Databáze: | Directory of Open Access Journals |
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