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

Research output: Contribution to conferencePaper

2 Downloads (Pure)

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.
Original languageEnglish
Number of pages5
Publication statusPublished - 7 Aug 2020
Event2020 IEEE Power and Energy Society General Meeting, PESGM2020 -
Duration: 3 Aug 20207 Aug 2020

Conference

Conference2020 IEEE Power and Energy Society General Meeting, PESGM2020
Period3/08/207/08/20

Keywords

  • HVDC grids
  • HVDC grid protection
  • real-time implementation
  • wavelet transform

Fingerprint Dive into the research topics of 'Real time evaluation of wavelet transform for fast and efficient HVDC grid non-unit protection'. Together they form a unique fingerprint.

  • Cite this

    Psaras, V., Vozikis, D., Adam, G., & Burt, G. (2020). Real time evaluation of wavelet transform for fast and efficient HVDC grid non-unit protection. Paper presented at 2020 IEEE Power and Energy Society General Meeting, PESGM2020, .