Theoretical Research on Fault Transient Analysis of AC-DC Hybrid Distribution Networks

Yuetao Li; Jian Sun; Bin Zhang

doi:10.62051/ijepes.v4n2.02

Authors

Yuetao Li
Jian Sun
Bin Zhang

DOI:

https://doi.org/10.62051/ijepes.v4n2.02

Keywords:

AC/DC Hybrid Distribution Network, Fault Characteristic Analysis, Equivalent Modeling

Abstract

After a large number of distributed power sources are connected to the traditional distribution network, it faces problems such as unstable voltage, uneven current load, and large power fluctuations, which directly affect the stability and reliability of the system. In order to effectively address these issues, both academia and industry have proposed the concept of hybrid AC/DC power distribution networks. The AC/DC hybrid distribution network combines the advantages of AC/DC transmission to achieve more efficient energy transmission and more flexible power flow regulation, thereby improving the stability and reliability of the power grid. Due to the high inrush and fast transmission characteristics of DC fault currents in hybrid AC/DC distribution networks, the need for protection is urgent. Therefore, it is essential to analyze the fault characteristics of a hybrid AC/DC distribution network. Taking the four-terminal flexible DC hybrid distribution network as the research object, the fault characteristics and their influences at each stage are analyzed.

References

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