Fault Characteristics Analysis on 56-Bus Distribution System with Penetration of Utility-Scale PV Generation

Wang, Biqi; Burgos, Rolando; Tang, Ye; Wen, Bo

doi:10.1109/egrid52793.2021.9662143

Cited by 5 publications

(1 citation statement)

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“…In references [3][4], the influence of additional current generated by DG on the original protection configuration is limited by limiting the access capacity and location of DG, but this method can not give full play to the economic performance of DG. In Reference [5], a scheme of recalculating the fixed value of each protection according to the working state during the fault period after the access of distributed power supply is proposed, but this scheme can not adapt to the influence of DG output fluctuation [6] . In reference [7], a scheme based on protection principle combined with communication to obtain protection action setting value is proposed.…”

Section: Introductionmentioning

confidence: 99%

Optimization of time-sharing over-current protection setting value for distribution network with decentralized access of distributed power supply

Zong,

Liang,

Zhao

et al. 2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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Distributed generator (DG) decentralized access to the distribution network, so that the current characteristics presented during the fault period are different from the traditional distribution network, and the current characteristics are more complicated. The variation of DG's output in different time periods leads to the inability of stage current protection to accurately discriminate. In this paper, firstly, the low-voltage ride-through control strategy is considered, and the current characteristic model of DG output port is established. Then, the current characteristics during the fault period after decentralized access of multiple DGs are analyzed. The optimization scheme of adjusting the protection value according to the DG parameters by time period is proposed by combining the output information of DG in different time periods. Finally, it is verified through examples that the proposed protection scheme can enhance the protection range of section I and significantly improve the sensitivity of section II, which has practical application value.

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Section: Introductionmentioning

confidence: 99%