Determining the Correction Factors of Overhead-Conductors in 6kV Mining System of QuangNinh, VietNam with the Consideration of Power Harmonic Impact

• Autorzy: Giang Vu Hoang , Thanh Le Xuan

Identyfikatory

DOI

10.29227/IM-2023-02-14

Warianty tytułu

PL

Wyznaczanie współczynników korekcyjnych dla przewodów napowietrznych 6kV w kompleksie górniczym QuangNinh w Wietnamie z uwzględnieniem wpływu harmonicznych mocy

• Konferencja: POL-VIET 2023 — the 7th International Conference POL-VIET
• Języki publikacji: EN

Abstrakty

EN

Understanding the impact of power harmonic on energy transmission play an important role not only in the operation process but also in the designing procedure of MV grid. In 6kV mining grids of Vietnamese coal mines, because of rapidly utilizing the power electronic machines, the power quality violation occurs very frequently. This lead to many disadvantages such as: the increase of power losses, voltage distortion, over-heating in transformers and conductors. Moreover, the presence of power harmonic bring the bad impact of skin effect and proximity on conductor including overhead-conductors and cables. The actual operation exhibits that the losses of transmission lines are approximately over 50% of total network losses. If there are power quality violation, this amount could be higher. Basing on investigating the fact of power harmonic violations in 6kV grid of both underground and surface mines, the paper will analyze this kind of impact. An algorithm relying on Matlab programming is used to calculate the energy losses. Results are compared with on-site measurement datas and lab-measurement to obtain series of correction factors corresponding to individual line’s cross section. The outcomes of research could be applicable for power utilities to have better analysis in the designing stage of mining MV grids.

Słowa kluczowe

EN

medium voltage grid; skin effect; correction factor; algorithm

PL

górnictwo; Wietnam; maszyny elektryczne

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2023
• Tom: no. 2, vol. 1
• Strony: 71--78
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wykr., zdj.

Twórcy

autor

Giang Vu Hoang

• HaNoi University of Mining and Geology, HaNoi, VietNam

autor

Thanh Le Xuan

• Faculty of Electrical Engineering, Electric Power University, HaNoi, VietNam

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023)