A low-inductance large-capacity adjustable resistance unit and device

Abstract

The invention discloses a low-inductance large-capacity adjustable resistance unit. The resistance unit comprises one or more resistors, wherein a metal body is stacked on the one or more resistors toform the resistance unit with an adjustable resistance value. When only one resistor is available, the resistance value of the resistance unit is adjusted by changing the resistance value of the resistors, and meanwhile the allowance of the length of the resistors is filled up by changing the length of the metal body. When multiple resistors are available, the multiple resistors are sequentiallyconnected in series and stacked, the resistance value of the resistance unit is adjusted by changing the resistance value and quantity of the resistors, and meanwhile the allowance of the length of the resistors is filled up by changing the length of the metal body. The invention furthermore discloses a low-inductance large-capacity adjustable resistance device. The low-inductance large-capacity adjustable resistance unit has the advantages of being compact in structure, low in inductance, large in capacity, convenient to adjust, large in adjustable range and the like.

Description

technical field [0001] The invention relates to a low-inductance and large-capacity adjustable resistance unit and a device, belonging to the technical field of high-voltage testing of electric equipment. Background technique [0002] Compared with traditional air-insulated switchgear, gas-insulated metal-enclosed switchgear (GIS) has the advantages of small footprint, less impact from the natural environment, safe and reliable operation, and long inspection and maintenance cycles. Since its appearance in the 1960s, it has been widely used in domestic and foreign power systems. However, due to reasons such as design, processing and on-site installation, insulation defects will inevitably appear in the GIS, resulting in accidents such as insulation breakdown during operation. [0003] For power equipment, especially GIS equipment, the traditional AC withstand voltage and partial discharge tests cannot effectively find defects, which is also a main reason for the frequent occ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of traditional distributed wavefront resistance adjustment, narrow adjustment range, large inductance, and small resistance capacity, the present invention proposes a low-inductance, large-capacity adjustable resistance unit and device, which have the advantages of convenient operation, large adjustable range, It has the advantages of large resistance capacity, small inductance, etc., and also has high dielectric strength, which can be used in high voltage and high current environments

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