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Dynamic Equivalence Modeling of Short-Circuit Faults in Wind Farms Considering Wake Effects
Received date: 2022-11-25
Revised date: 2023-05-29
Accepted date: 2023-07-31
Online published: 2023-09-20
Fast and accurate analysis of the short-circuit characteristics of large wind farms has important engineering application value, and the short-circuit characteristics of wind farms under the influence of the wake effect vary greatly. Therefore, it is necessary to establish a wind farm short-circuit fault time equivalence model. A wind farm short-circuit fault dynamic equivalence method considering the effect of wake effect is proposed. First, the wake effect factor is defined to reflect the degree of the unit affected by the wake effect. Then, the wake effect factor is used as the grouping basis to reduce the variability of operating state of the units within the group under the influence of the wake effect. A positive- negative- zero-sequence network equivalence method is analyzed to improve the effectiveness of the equivalence model in asymmetric short-circuit faults. An equivalence method suitable for zero-sequence network is proposed and a platform is built for verification. The simulation results show that the dynamic short-circuit fault equivalence model proposed can accurately reflect the active and reactive short-circuit output characteristics of wind farms under the influence of the wake effect.
YU Hao , LI Canbing , YE Zhiliang , PENG Sui , REN Wanxin , CHEN Sijie , TANG Binwei , CHEN Dawei . Dynamic Equivalence Modeling of Short-Circuit Faults in Wind Farms Considering Wake Effects[J]. Journal of Shanghai Jiaotong University, 2024 , 58(6) : 798 -805 . DOI: 10.16183/j.cnki.jsjtu.2022.476
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