Chaisiri, Punyavee
Loading...
Preferred name
Chaisiri, Punyavee
Alternative Name
Chaisiri, P.
Main Affiliation
Email
punyavee.ch@kmitl.ac.th
15 results
Now showing 1 - 10 of 15
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Study of High Voltage AC Generation Using A Series Resonant Circuit(2023-01-01); ; Mai-Eiam, ThanatornThis paper studies an approach for high-voltage AC generation using a series resonant circuit in case of high capacitive load. The capacitor of 0.5 microfarad was a selected capacitive load in the test circuit. An HV inductor with 3 changing taps (53.2 H, 24.2 H, and 18.6 H) is used in the circuit for the generation of AC voltage with frequencies of about 30 Hz, 40 Hz, and 50 Hz, respectively. The square wave was generated by a variable frequency converter. The frequency of the square wave is adjusted to meet the resonant conditions associated with the inductance and capacitance of the circuit. It was found that using the test circuit the voltage gains of 30 can be achieved in the experiments. From the test results, it can confirm the possibility for further development of the test circuit used in the onsite test of MV and HV power cables in the near future. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The performance of a high frequency current transducer for partial discharge measurement under testing with a power frequency converter(2018-11-01); ; In this paper, the performance of a high-frequency current transducer (HFCT) for partial discharge measurement under testing with a power frequency converter is presented. The performances of the HFCT in comparison with the conventional partial discharge detection system (Omicron MPD600) were investigated terms of the ability to classify partial discharges and the background noises in the system from PD test cells in case of corona discharge, internal discharge and surface discharge. It's found that the presented system provides the better performances (in terms of the background noise) than conventional PD detection system and it can also be used to distinguish type of partial discharges. In addition, the presented system has been used for the real partial test on the PD test cells successfully. The HFCT for PD detection is an attractive choice in the PD tests of high-voltage equipment. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Investigation on Electrical Characteristic of Saline Solution(2019-09-01); 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. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of A Transient Recorder for Lightning Impulse Voltage Measurement(2024-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design and construction of a prototype saline solution resistive voltage divider(2013-09-02); 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. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Development of High-Voltage Alternating Current Measuring System(2023-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Applications of high-voltage resistor based on saline solution in high-voltage impulse generation and measurement(2020-01-01); 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.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A System for PD Pulse Generating, Monitoring, and System Characterization(2024-01-01); 2 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Accurate Loss Tangent Determination in Damped Alternating Voltage Tests(2024-01-01); ; Paophan, BusayapolUnderground cables are crucial for sustainable energy systems due to their minimal visual impact, reliability, and resilience against weather-related disruptions. As reliance on renewable energy sources rises, their importance grows. Regular evaluation of these cables is essential for ensuring safety, reliability, and resilience of electricity networks. By promptly identifying risks like insulation degradation, utilities can optimize maintenance, prioritize repairs, and bolster the integration of renewables, enhancing overall infrastructure performance. Loss tangent is the most significant value used for evaluation of the cable condition. This paper presents an alternative method for estimation of loss tangent in comparison with a conventional approach in damped alternating current voltage (DACV) tests. In the loss tangent estimation, the equivalent circuit of the DACV test system and a damping factor of the measured test voltage are utilized in the loss tangent estimation. From simulation experimental results, it is found that the conventional method is not accurate in loss tangent estimation in cases of low loss tangent measurement in the range of 0.1% which is a typical value of the new and used underground power cables. However, the accuracy of the proposed method is still in the acceptable range for estimation of the loss tangent in the range of 0.1%1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Dielectric properties of mineral oil compared with natural ester(2017-11-29); 1