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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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A fast response high voltage measuring system based on saline solution
(2014-11-05)
Phoaphan, Busayapol
;
Triruttapiruk, Nawakun
;
Yutthagowith, Peerawut
This paper presents design and construction of a simple structure voltage measuring system with high energy absorption capability and fast response for measurement of nanosecond pulse voltage. The measuring system is composed of a high voltage divider and an attenuator. The high voltage part of the divider was constructed from saline solution contained in a plastic tube. The low voltage part of the divider and also the attenuator were constructed from metal film resistors enclosed in an aluminium housing. The voltage rating is 300 kV and the high voltage resistance is 11 kΩ. The developed measuring system has been tested according to the standard of IEC 60060-2 composing of a scale factor test, a withstand voltage test, a short term stability test. From the experimental results, the developed measuring system has good performance in measurement of the steep front voltage according to the standard of IEC 61211. From the unit step response test, the partial response time of the measuring system is less than 3 ns, the over shoot is 36%, and settling time is less than 150 ns. This accomplishment will be advantage for increasing capability of HV laboratory and for researches being about effect of fast transient voltage in transmission and distribution systems in Thailand.
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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.

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