Real time evaluation of wavelet transform for fast and efficient HVDC grid non-unit protection

Psaras, Vasileios and Vozikis, Dimitrios and Adam, Grain and Burt, Graeme (2020) Real time evaluation of wavelet transform for fast and efficient HVDC grid non-unit protection. In: 2020 IEEE Power and Energy Society General Meeting, PESGM2020, 2020-08-03 - 2020-08-07.

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Abstract

This paper presents a real-time evaluation of a Wavelet Transform (WT) for HVDC grid non-unit protection. Due to its time and frequency localisation capability, WT can successfully extract the necessary information present in the voltage transients following a DC fault. This capability is exploited to achieve fast and selective HVDC grid protection. A Digital Signal Processor (DSP) is employed to execute real-time Stationary Wavelet Transform (SWT) on voltage signals using discrete convolution to efficiently compute the WT coefficients. Hardware-in-the loop (HIL) simulation is performed to test a WT-based hardware module using a Digital Real-Time Simulator (DRTS), in which a meshed HVDC grid is modelled. The closed-loop interaction enables the hardware device to emulate a protection relay that can generate trip commands for the HVDC breakers integrated within the HVDC grid model. The real-time simulations demonstrate the technical feasibility, speed and robust performance of the SWT implementation.

  • Item type:Conference or Workshop Item(Paper)
    ID code:73881
    Dates:
    Date
    Event
    7 August 2020
    Published
    1 March 2020
    Accepted
    Notes:© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:16 Sep 2020 15:31
    Last modified:11 Apr 2024 03:11
    URI:https://strathprints.strath.ac.uk/id/eprint/73881
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