Browsing Electrical Engineering Conference by Author "Lucas, JR"

Sort by: Order: Results:

  • Condition monitoring system for outdoor insulators 
    Karunarathna, IMAM; Karunathilaka, KLT; Wanasinghe, WMHM; Sampath, GKL; Lucas, JR; Samarasinghe, R [Conference-Full-text]
    High Voltage insulators are vital components in transmission and distribution systems in a power network. Most of the insulators are used in open air applications where they are subjected to different environmental ...
  • A dc link for the power system simulator 
    Abeyrathne, PM; Abeysinghe, AMGT; Karunanayake, IM; Ranasinghe, PMH; Dias, MP; Lucas, JR [Conference-Full-text]
    High Voltage Direct Current (HVDC) links are used for bulk power transmission due to its advantages over the alternating current (ac) transmission. A HVDC link between India and Sri Lanka has also being proposed. Hence it ...
  • Effect of barrier and its shape over the breakdown voltage of oil gaps 
    Ediriweera, WEPS; Jayarathna, KLIMPB; Samarasinghe, R; Lucas, JR [Conference-Full-text]
    This paper studies the use of insulating barriers on the breakdown voltage of oil gaps upon two type of coconut oils under AC voltage. A point plane electrode arrangement connected to a AC transformer is used to find ...
  • An improved wide frequency model for VFTO of power transformers using transfer functions 
    Jayarathna, KLIMPB; Ediriweera, WEPS; Samarasinghe, R.; Lucas, JR [Conference-Full-text]
    An accurate understanding of power transformer high frequency behavior is very important to assess the impacts on power system due to transient over-voltage conditions. An improved method of modeling power transformer ...
  • Influence of water and powder contaminants on dielectric strength of transformer oil 
    Abeyrathna, MSM; Karunaratne, MMLK; Kahingala, KPV; Samarasinghe, R; Lucas, JR [Conference-Full-text]
    Transformer failure statistics reveal that most of the transformer failures are due to insulation failures, where a considerable fraction of that percentage is caused by oil contamination. In this paper, the influence of ...
  • A matlab simulink model for a partial discharge measuring system 
    Gunawardana, SDMS; Kanchana, AAT; Wijesingha, PM; Perera, HAPB; Samarasinghe, R; Lucas, JR [Conference-Full-text]
    Failures in high voltage equipment are often caused due to internal faults which cause a local electrical stress concentration in the insulation; called as partial discharge. Therefore partial discharge detection is highly ...
  • Performance evaluation of a hybrid dual-axis solar tracking system 
    Vidanapathirana, K; Kumarapeli, KAHS; Marasinghe, MADD; Amarasinghe, DP; Lucas, JR [Conference-Full-text]
    In a photo-voltaic solar energy system, solar tracking can harness more energy compared to a fixed system. This paper presents a design of a Manual/Automatic Hybrid Dual Axis Solar Tracking System that tracks the sun’s ...