Pannil, Pittaya

Loading...
Thumbnail Image
Preferred name
Pannil, Pittaya
Alternative Name
Pannil, P.
Main Affiliation
Email
pittaya.pa@kmitl.ac.th

Settings

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Online PD Measurement by Detecting the Pulsed Compensating Current in High Voltage Equipment
    (2022-01-01)
    Srinangyam, Chissanupong
    ;
    Pannil, Pittaya
    ;
    Nimsanong, Phethai
    ;
    Chuayin, Chaitawat
    ;
    Thungsook, Kittisak
    This paper discusses the pulsed compensating current caused by partial discharge (PD) phenomena that flows inside the electrical equipment installed in the power system. Such electrical equipment like to be the capacitive coupler in the partial discharge test circuit. In order to study the pulsed compensating current of the PD measurement, artificial PD source such as corona, surface, and internal was used in this experiment. The electrical equipment like surge arrester combined with HFCT sensor utilized to detect the PD pulse current. Furthermore, this proposed technique has been applied for online PD measurement in substations. It was found that the surge arrester could compensate for the pulse current arising from the PD source. This study will be helpful information for online PD measurement.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Experiment of Dielectric Frequency Response for Aged ZnO Surge Arrester
    (2025-01-01)
    Aiamrungruang, Phitthaya
    ;
    Methavithit, Winai
    ;
    Pannil, Pittaya
    ;
    Chuayin, Chaitawat
    ;
    Zinck, Matthieu
    Condition-based monitoring of surge arresters has gained increasing attention in modern power system asset management, especially for medium-voltage equipment. This paper presents an investigation into the dielectric frequency response (DFR) analysis technique as a diagnostic method to evaluate aging and unhealthy conditions in 21-kV metal oxide surge arresters (MOSA). Four types of simulated defects, excessive number of lightning current stress, cracking, moisture ingress, and tracking, were introduced to represent common field failures. The DFR technique enables frequencydomain interpretation of dielectric properties, providing insight into insulation behavior over a wide frequency range. The test results show a significant variation in capacitance and dissipation factor corresponding to different defect types. Among these, moisture ingress exhibited the most severe deterioration. The findings suggest that DFR is a viable offline diagnostic method that can support preventive maintenance strategies for high-voltage surge arresters.