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Mitigating tap changer limit cycles in modern electricity networks embedded with local generation units

Journal Article


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Abstract


  • Cascaded on-load tap changers (OLTCs) are widely

    used for coarse control of voltages in largely interconnected elec-

    tric power systems. There could be interactions between load

    dynamics and OLTC control under certain system operating

    conditions which may lead to the OLTC limit cycle phenomena,

    thereby resulting into long-term voltage oscillations in the system.

    In recent years, renewable and nonrenewable local generation

    (LG) units have been getting interconnected in modern power

    systems. The existence of OLTC limit cycles in the presence of

    LG has not been addressed in the literature in greater details. In

    this paper, the OLTC limit cycle phenomenon, which can occur

    due to interactions among load dynamics, OLTC controls, and LG

    operation in electricity networks, has been investigated. Also, a

    novel strategy is explored for mitigating the power system oscil-

    lations introduced by OLTC limit cycles, especially for a network

    embedded with LG. The proposed mitigation strategy including

    detailed investigations and analyses has been verified for a two-bus

    test system and successfully tested on a multibus system using

    MATLAB

Publication Date


  • 2016

Citation


  • D. Ranamuka Rallage, A. P. Agalgaonkar, K. M. Muttaqi & M. Alam, "Mitigating tap changer limit cycles in modern electricity networks embedded with local generation units," IEEE Transactions on Industry Applications, vol. 52, (1) pp. 455-465, 2016.

Scopus Eid


  • 2-s2.0-84962208587

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6122&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5095

Number Of Pages


  • 10

Start Page


  • 455

End Page


  • 465

Volume


  • 52

Issue


  • 1

Abstract


  • Cascaded on-load tap changers (OLTCs) are widely

    used for coarse control of voltages in largely interconnected elec-

    tric power systems. There could be interactions between load

    dynamics and OLTC control under certain system operating

    conditions which may lead to the OLTC limit cycle phenomena,

    thereby resulting into long-term voltage oscillations in the system.

    In recent years, renewable and nonrenewable local generation

    (LG) units have been getting interconnected in modern power

    systems. The existence of OLTC limit cycles in the presence of

    LG has not been addressed in the literature in greater details. In

    this paper, the OLTC limit cycle phenomenon, which can occur

    due to interactions among load dynamics, OLTC controls, and LG

    operation in electricity networks, has been investigated. Also, a

    novel strategy is explored for mitigating the power system oscil-

    lations introduced by OLTC limit cycles, especially for a network

    embedded with LG. The proposed mitigation strategy including

    detailed investigations and analyses has been verified for a two-bus

    test system and successfully tested on a multibus system using

    MATLAB

Publication Date


  • 2016

Citation


  • D. Ranamuka Rallage, A. P. Agalgaonkar, K. M. Muttaqi & M. Alam, "Mitigating tap changer limit cycles in modern electricity networks embedded with local generation units," IEEE Transactions on Industry Applications, vol. 52, (1) pp. 455-465, 2016.

Scopus Eid


  • 2-s2.0-84962208587

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6122&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5095

Number Of Pages


  • 10

Start Page


  • 455

End Page


  • 465

Volume


  • 52

Issue


  • 1