A Resistive Impact Voltage Divider with High Precision and Fast Response

Abstract

The invention relates to a high-precision rapid-responding electric resistor type impulse voltage divider. The high-precision rapid-responding electric resistor type impulse voltage divider is characterized by comprising a double-ring-shaped high-voltage shielding electrode, an insulating cylinder, an upper flange, a lower flange, a high-voltage arm resistor, a high-voltage low-voltage arm connection wire, a low-voltage arm resistor, a matching resistor and a low-voltage arm shielding box, has the advantages of being simple in structure, good in stability, fast in square-wave responding, high in measuring accuracy and the like and is applicable to measuring of impulse high voltage of a us class and even a sub-ns class. The resistor type impulse voltage divider is low in temperature coefficient of a high-voltage arm resistor and a low-voltage arm resistor, little in affection by temperature vibration and good in stability. The high-voltage arm resistor is highly arranged so as to reduce stray capacitance on the ground by the high-voltage arm. The double-ring-shaped high-voltage shielding electrode is used for boosting stray capacitance on a high-voltage side by the high-voltage arm resistor and therefore, square wave responding time of the voltage divider is effectively reduced and measuring accuracy is improved. Meanwhile, the double-ring-shaped high-voltage shielding electrode of the voltage divider adopts optimal radius of curvature and size through simulation calculation and stray capacitance on the ground by the high-voltage shielding electrode is reduced. Possibilities of corona discharge are eradicated and the measuring accuracy is further improved.

Description

technical field [0001] The invention relates to an impact voltage divider, in particular to a high-precision and fast-response resistive impact voltage divider, which is suitable for accurate measurement of sub-nanosecond to microsecond-level impact high voltage. Background technique [0002] In scientific research in high-tech fields such as power transmission, electronics, high-power microwaves and lasers, the use of impulse high voltages is becoming more and more common. The resistive impact voltage divider is a device used to accurately measure the impact high voltage, which can reduce the impact high voltage according to a certain ratio for measurement. Due to the existence of the impact high-voltage electric field, there are stray capacitances between the resistor body and the shielding electrode and between each part of itself. The existence of these stray capacitances will increase the square wave response time of the voltage divider, resulting in a larger Measureme...

AI Technical Summary

Problems solved by technology

However, the shape of the high and low voltage shielding electrodes of the voltage divider is very easy to generate corona discharge under the pulse high voltage, thus affecting the measurement accuracy

[0009] No similar resistive impact voltage divider is disclosed or used after searching the prior art

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