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    Wyświetlanie 1-5 z 5
    Tytuł:
    Ionizing radiation as a component of energy balance in electrical discharges in air and mineral oil
    Autorzy:
    Nagi, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/114669.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    ionizing radiation
    electrical discharges
    scintillator
    energy balance
    Opis:
    The paper presents the results of research concerning electrical discharges generating ionizing radiation in air and oil. Ionizing radiation is an important component of energy balance in electrical discharges. In energetics and all other engineering sciences, the energy balance shows the flow of energy for a given technological process. Within it, the energy needs of the process and its effect are collated.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 4; 146-148
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of a supply voltage value on the UV light generated by PD on HV cap insulators – a comparative analysis
    Autorzy:
    Urbaniec, I.
    Frącz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/114117.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    corona discharges
    optical emission
    HV insulator testing
    Opis:
    The paper presents results of research works whose aim was to determine and indicate characteristics of optical signals emitted by corona discharges occurring in the vicinity of two types of high-voltage (HV) cap insulators. The experimental studies were performed under laboratory conditions using an ultraviolet (UV) camera. Two types of cap insulators were analyzed: one made of glass and the second one made of porcelain. For both considered insulating devices, the influence of supply voltage on the intensity of optical radiation was determined. The obtained results were analyzed and compared. Based on the results, it was stated that both cap insulators indicated similar characteristics but the most significant difference lied in the existence of the punch-through on the glass cap.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 10; 470-474
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time and frequency domain analysis of partial discharges using electrical method
    Autorzy:
    Kunicki, M.
    Cichoń, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973070.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    partial discharges
    electrical method
    IEC 60270
    frequency domain
    time domain
    Opis:
    Partial discharge (PD) measurement results with particular consideration of time domain and frequency domain analysis of pulses generated by PD model sources are presented in the paper. Three different PD generation model sources are selected for the research: surface type, point to point and multi-point to plate. All measurements are proceeded under laboratory conditions using electrical method of a PD detection, according to the IEC60270 standard. Various amplitude and power density spectrum descriptors are proposed, as well as PD source type identification abilities on grounds of the selected descriptors are considerated. Electrical power transformers on-line PD detection and evaluation systems improvement and development are the main purpose of the presented research. Laboratory experiment results gives a solid base for further research focused on verification of the proposed methodology on a real life apparatus.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 2; 72-77
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of UV camera for PD detection on long rod HV insulator
    Autorzy:
    Urbaniec, I.
    Frącz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/114242.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    surface partial discharges
    PD measurements
    optical method
    HV insulator diagnosis
    Opis:
    The aim of the research works, results of which are presented in this paper, was to determine the feasibility and to indicate the application scope of optical method in the diagnosis of high-voltage (HV) long rod insulators. Diagnosis of technical condition of HV insulators is critical, because the insulation system undergoes aging processes, which cause deterioration of the insulating properties. The measurements were performed during test under laboratory conditions using an UV camera. Corona partial discharges occurring on the long rod insulator were registered, while the supply voltage value was increased. The presented analyses consider dependencies of the supply voltage value on the count number of UV photons emitted by partial discharges occurring in long rod insulator made of porcelain.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 3; 64-67
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of surface type partial discharges using electrical, acoustic emission and UHF methods
    Autorzy:
    Kunicki, M.
    Cichoń, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/114691.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    partial discharges
    PD measurements
    UHF method
    AE method
    IEC60270
    transformer fault diagnosis
    Opis:
    This paper presents research results related to measurements of partial discharges (PD), which may occur in oil insulation systems of electric power transformers. Three measuring methods were considered: electrical (apparent charge - IEC60270), acoustic emission (AE) and ultra-high frequency (UHF) method. Research works have been proceeded under laboratory condition. PD were generated using special apparatus and spark gap configuration for surface PD modeling. Measurements were performed simultaneously for each of the regarded methods and were repeated for selected supply voltage levels. The electrical and UHF methods measurements were made using MPD measuring system from Omicron. The AE method measurements were made using a piezoelectric transducer, which was installed on the outer transformer tank wall. Comparative analysis of signals gathered during research works was made. Possibilities of application of the three considered PD detection methods for electric power systems with oil insulation were proposed in the paper.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 1; 12-15
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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