Peak-ratio analysis method for enhancement of LOM protection using M class PMUs

Ding, Feng and Booth, Campbell D. and Roscoe, Andrew J. (2016) Peak-ratio analysis method for enhancement of LOM protection using M class PMUs. IEEE Transactions on Smart Grid, 7 (1). pp. 291-299. ISSN 1949-3053 (https://doi.org/10.1109/TSG.2015.2439512)

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Abstract

A novel technique for loss of mains (LOM) detection, using Phasor Measurement Unit (PMU) data, is described in this paper. The technique, known as the Peak Ratio Analysis Method (PRAM), improves both sensitivity and stability of LOM protection when compared to prevailing techniques. The technique is based on a Rate of Change of Frequency (ROCOF) measurement from M-class PMUs, but the key novelty of the method lies in the fact that it employs a new “peak-ratio” analysis of the measured ROCOF waveform during any frequency disturbance to determine whether the potentially-islanded element of the network is grid connected or not. The proposed technique is described and several examples of its operation are compared with three competing LOM protection methods that have all been widely used by industry and/or reported in the literature: standard ROCOF, Phase Offset Relay (POR) and Phase Angle Difference (PAD) methods. It is shown that the PRAM technique exhibits comparable performance to the others, and in many cases improves upon their abilities, in particular for systems where the inertia of the main power system is reduced, which may arise in future systems with increased penetrations of renewable generation and HVDC infeeds

  • Item type:Article
    ID code:53364
    Dates:
    Date
    Event
    1 January 2016
    Published
    17 June 2015
    Published Online
    23 May 2015
    Accepted
    Notes:(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components 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:12 Jun 2015 14:52
    Last modified:08 Apr 2024 22:22
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/53364
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