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Traveling Wave Based Differential Protection for Renewable Energy Penetrated Power System
Wang Haozong,Dong Xinzhou 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.3
Renewable sources such as solar and wind is the ideal solution for sustainable development. However, protection methods for renewable energy penetrated power systems still faces a lot of challenges. We claim that the performance of the diff erential protection is highly related to the model accuracy. Using a detailed distributed parameter line model, this paper developed a novel diff erential protection method for renewable energy penetrated power systems based on traveling waves with high rapidity and reliability. The optimal diff erential point is also discussed to enhance protection rapidity. Experiments demonstrate that the proposed protection could soon detect internal faults with high fault resistance while maintaining reliability when external faults occur.