IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v18y2026i11p5622-d1958401.html

Power Quality Improvement Based on Active Harmonic Filter in 24 kV Liquefied Natural Gas Industrial Plant’s Photovoltaic System

Author

Listed:
  • Chaichan Pothisarn

    (School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)

  • Theerasak Patcharoen

    (CPT Drives and Power Public Company Limited, Bangkok 10900, Thailand)

  • Chaiyaporn Lothongkam

    (Faculty of Engineering, Mahanakorn University of Technology, Bangkok 10530, Thailand)

  • Atthapol Ngaopitakkul

    (School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)

  • Praikanok Lertwanitrot

    (Electricity Generating Authority of Thailand, Nonthaburi 11130, Thailand)

  • Santipont Ananwattanaporn

    (School of International and Interdisciplinary Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)

Abstract

This paper presents a case study demonstrating the power quality improvements in a 24 kV distribution system at a liquefied natural gas (LNG) industrial plant with variable speed drives (VSDs), the conventional capacitor bank, and a rooftop solar photovoltaic system. Solar photovoltaic (PV) inverters can supply harmonic currents to the grid, potentially affecting the system and causing maloperation of sensitive equipment in both the utility systems and neighboring industries connected to it. Therefore, the installation of shunt active power filters (APFs) in a 400 V system was proposed in this study. The installed locations were varied, and the corresponding power qualities were analyzed. The results were examined in terms of design and harmonic elimination. Simulations were conducted using the PSCAD/EMTDC software version 4.5. The power quality simulation and field measurement results after the APF installation were compared to demonstrate the effectiveness of the proposed solutions. The addition of APFs was found to improve the power quality. In addition to the mechanism analysis, the economic feasibility of the proposed approach was investigated. The costs of APF installation in various locations were analyzed. The results show that the proposed method can improve the power supply at a reasonable price. This work contributes to sustainable industrial energy systems by improving the reliability and power quality of photovoltaic-integrated electrical networks, thereby supporting higher penetration of renewable energy resources and stable low-carbon industrial operation.

Suggested Citation

  • Chaichan Pothisarn & Theerasak Patcharoen & Chaiyaporn Lothongkam & Atthapol Ngaopitakkul & Praikanok Lertwanitrot & Santipont Ananwattanaporn, 2026. "Power Quality Improvement Based on Active Harmonic Filter in 24 kV Liquefied Natural Gas Industrial Plant’s Photovoltaic System," Sustainability, MDPI, vol. 18(11), pages 1-28, June.
    • Handle: RePEc:gam:jsusta:v:18:y:2026:i:11:p:5622-:d:1958401
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/18/11/5622/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/18/11/5622/
    Download Restriction: no
    ---><---

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:18:y:2026:i:11:p:5622-:d:1958401. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.