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Author: search.filters.author.Chaisiri, PunyaveeSubject: search.filters.subject.Saline solution

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    Applications of high-voltage resistor based on saline solution in high-voltage impulse generation and measurement
    (2020-01-01)
    Chaisiri, Punyavee
    ;
    Yutthagowith, Peerawut
    This paper presents applications of high-voltage (HV) resistors based on saline solution for HV impulse generation and measurement. The electrical resistivity and relative permittivity of saline solution in the frequency range from 100 Hz to 100 MHz were investigated. The electrical resistivity and relative permittivity were calculated from experimental measurements of the resistance and capacitance of saline solution in a test cell. From the characteristics and the experimental results, the technical data of saline solution with various concentrations of substances were utilized in the design of HV resistors for HV impulse generation and measurement, as a current-limiting resistor and an HV resistor used in an HV part of a voltage divider. Moreover, the developed HV resistors were tested to confirm their effectiveness in HV generation and measurement. From the experimental results, it was found that the developed HV resistors have promising characteristics for practical HV impulse generation and measurement. According to the results of this study, an HV resistor based on saline solution has strong potential for application in HV impulse generation and measurement compared with a conventional voltage divider.
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    The Investigation on Electrical Characteristic of Saline Solution
    (2019-09-01)
    Chaisiri, Punyavee
    ;
    Yutthagowith, Peerawut
    This paper presents the investigation of electrical characteristic of saline solution in the term of electrical resistivity and relative permittivity in the frequency range from 100 Hz to 100 MHz. The electrical resistivity and relative permittivity are calculated from resistance and capacitance of saline solution. The experimental results provide the technical data of the insulating liquid which is very useful for liquid insulator design applied for a part of high volt component.
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    Design and construction of a prototype saline solution resistive voltage divider
    (2013-09-02)
    Phoaphan, Busayapol
    ;
    Potivejkul, Siriwat
    ;
    Chaisiri, Punyavee
    ;
    Yutthagowith, Peerawut
    This paper presents design and construction of a prototype resistive voltage measuring system composing of a saline solution divider and resistive attenuator. The structure of the developed divider is designed in form of coaxial cylinder. The system has voltage rating of 300 kV. The developed measuring system has been test according to the IEC standard composing of unit step response test, scale factor test, withstand voltage test, and short term stability test. The experimental response times of the developed voltage measuring systems without and with shielding ring are about 50 ns and 25 ns, respectively. This accomplishment will be advantage for increasing capability of HV laboratory and for researches, which are about effect of fast transient voltage in transmission and distribution systems in Thailand. © 2013 IEEE.