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An improved line differential protection based on average compensation for synchronous sampling in power systems
ID：9 View Protection：ATTENDEE Updated Time：2022-05-13 14:36:32 Hits：187 Poster Presentation

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Abstract
The sensitivity of line differential protection inevitably deteriorates in case of asynchronous sampling values caused by sampling devices. This paper proposes a new scheme to compensate the sampling synchronization error based on the average value of sampling value. The numerical processing method of this scheme processes the sampling values of the current on both sides, takes the current sampling value on one side as the reference sampling value sequence, and generates a data curve according to the original sampling value sequence affected by the sampling synchronization error on the other side. The average value is selected on the data curve in the middle of adjacent sampling points as the new data value of the sampling value sequence at the reference time to reduce the sampling synchronization error. Additionally, the effects of two error compensation methods (i.e. fitting and interpolation) are compared and the influences of sampling frequency on operation results are analyzed. The feasibility of the proposed method is verified through simulation.
 
Keywords
transimisson line;Current Differential Protection;Data Synchronization;Sampling Value
Speaker
YalongChen
Student 东南大学

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Important Date

  • Conference Date

    May 27

    2022

    to

    May 29

    2022

  • Feb 28 2022

    Draft paper submission deadline

  • May 29 2022

    Registration deadline

  • Jun 22 2022

    Contribution Submission Deadline

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IEEE Beijing Section
China Electrotechnical Society
Southeast University
Supported By
IEEE Industry Applications Society
IEEE Nanjing Section
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