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- W2386571806 abstract "The evaluation model for transformers’ DC bias in hydropower plant under HVDC ground return operating model was presented.The developed software based on this model was established.Comparision between mesured value and calculated result proved the effectiveness of the model.Current injection meth-od was analyzed and was stressed on the ways of surpress DC bias.Take JingPing hydropower plant for ex-ample,suggestion on construction and operation of the hydropower plant were presented.With the practical condition of hydropower plant,different DC bias mitigation methods were analyzed.Monitoring data verified the effectiveness of the current injection method and the impact of soil resistivity and compensation distance on compensation degree was quantitatively analyzed.Simulation and application of the method show that current injection actually functions as compensation of potential difference to the bus of substation.Increase in soil resistivity demand or decrease in compensation distance lead to the increase in injection current.But it leads to lower compensation degree and the compensation degree usually bellows 0.6.The most advan-tage of current injection method is to keep neutral unchanged and save space of station.Only ones set of the equiment can safely supress the transformer DC bias in hydroplant." @default.
- W2386571806 created "2016-06-24" @default.
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- W2386571806 date "2010-01-01" @default.
- W2386571806 modified "2023-09-26" @default.
- W2386571806 title "Evaluation and mitigation for DC bias in Hydropower plant" @default.
- W2386571806 hasPublicationYear "2010" @default.
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