IEEE Standard Techniques for High-Voltage Testing

doi:10.1109/ieeestd.1995.81695

Cited by 6 publications

(4 citation statements)

References 62 publications

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“…However, this limit was never reached by the available high voltages. The pin-to-plate arrangement of the test-stand is in agreement with similar works done in the field [2,4,19] ments in small gaps [20]. While the pin-to-pin setup is recommended for larger gaps, the pin-to-plate geometry is suitable for special applications.…”

Section: Paschen Curve Test Standsupporting

confidence: 81%

Paschen's law studies in cold gases

et al. 2017

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The break-through voltage behavior over small gaps has been investigated for differing gap distances, gas pressures, and gas temperatures in nitrogen, neon, argon and xenon gases. A deviation from Paschen's law at micro gap distances has been found. The break-through behavior of the fill gas in colder environments was also tested. A significant shift of the curve relative to the results at room temperature was observed. This behavior can be explained by combining Paschen's law and the ideal gas law.

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Section: Paschen Curve Test Standsupporting

confidence: 81%

Paschen's law studies in cold gases

et al. 2017

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“…Figure 9(a) shows the fundamental surge current waveform, which is determined by the wavefront and wavetail times and the peak value of the current [27,28]. The points corresponding to 10% and 90% of the peak values in the current rise portion are connected to a line, the virtual origin point is set to a portion where the line meets the x-axis (time), and the endpoint is set to a portion where the virtual line and the peak value meet.…”

Section: B Experimental Resultsmentioning

confidence: 99%

“…A direct lightning strike surge current generator, which was designed and manufactured according to Institute of Electrical and Electronics Engineers (IEEE) and Underwriters' Laboratories (UL) standards, was employed. Figure 7 shows the configuration of the experimental device and circuit diagram [28][29][30][31][32][33][34]. The maximum Uc (300 Vrms) of the varistor TVR -14471 was applied.…”

Section: Operating Duty Test Of Varistormentioning

confidence: 99%

Investigation on the Physical Properties of Varistors According to Temperature

2022

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This study aims to determine the basic physical properties of varistor, which is a protective element in a surge protection device (SPD) used to prevent damage to electric and electronic equipment due to lightning. To do this, we conducted tests of insulation resistance, leakage current, heating characteristics, accelerated aging, impulse current, and operating duty according to temperature. To measure insulation resistance and leakage current, an S1-1568 insulation resistance tester was used. To measure the temperature rise according to a change in the external environment, a convection oven was employed. For the impulse current test, a surge current generator of a direct lightning strike, which was designed and manufactured according to the IEEE and UL standards, was used. We verified that the leakage current increased and the insulation resistance decreased as the voltage and outside temperature were applied to the varistor. This meant that heating and deterioration accelerated due to the leakage current, depending on the place where the SPD was applied. Heat accumulation due to constant heating could cause a change in the physical properties of a varistor and degradation of performance, leading to failure. The impulse current test results of the varistor through the operating duty test showed that changes in insulation resistance and leakage current did not occur significantly with an increase in the number of impulse applications when the less than the maximum surge currents. On the other hand, the maximum surge current was exceeded, the insulation resistance rapidly decreased, which also rapidly increased the leakage current.INDEX TERMS SPD, MOV, varistor, surge protection device.

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“…However, in Reference [55] it is pointed out that air humidity may influence some ionization parameters like electron attachment, and favors condensation which has measurable effects on the corona onset voltage gradient. In a study conducted by Garcia et al [56] in Bogotá at an altitude of about 2540 m, it was concluded that when increasing the altitude above sea level, the influence of humidity in the breakdown voltage diminishes and the atmospheric correction factors proposed by the IEEE Std-4-1995 [57] to estimate the breakdown voltage may lead to significant errors.…”

Section: Environmental Conditionsmentioning

confidence: 99%

Voltage Correction Factors for Air-Insulated Transmission Lines Operating in High-Altitude Regions to Limit Corona Activity: A Review

Riba

Larzelere²,

Rickmann

2018

Energies

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Nowadays there are several transmission lines projected to be operating in high-altitude regions. It is well known that the installation altitude has an impact on the dielectric behavior of air-insulated systems. As a result, atmospheric and voltage correction factors must be applied in air-insulated transmission systems operating in high-altitude conditions. This paper performs an exhaustive literature review, including state-of-the-art research papers and International Standards of the available correction factors to limit corona activity and ensure proper performance when planning air-insulated transmission lines intended for high-altitude areas. It has been found that there are substantial differences among the various correction methods, differences that are more evident at higher altitudes. Most high-voltage standards were not conceived to test samples to be installed in high-altitude regions and, therefore, most high-voltage laboratories are not ready to face this issue, since more detailed information is required. It is proposed to conduct more research on this topic so that the atmospheric corrections and altitude correction factors found in the current International Standards can be updated and/or modified so that high-voltage components to be installed in high-altitude regions can be tested with more accuracy, taking into account their insulation structure.

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IEEE Standard Techniques for High-Voltage Testing

Cited by 6 publications

References 62 publications

Paschen's law studies in cold gases

Paschen's law studies in cold gases

Investigation on the Physical Properties of Varistors According to Temperature

Voltage Correction Factors for Air-Insulated Transmission Lines Operating in High-Altitude Regions to Limit Corona Activity: A Review

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