Megavolt paper film composite capacitor arm, modular high voltage pulse capacitor and designing and manufacturing method thereof

Abstract

The invention provides a megavolt paper film composite capacitor arm, a modular high voltage pulse capacitor and a designing and manufacturing method thereof and is applied to an electromagnetic pulsesimulation device utilizing transformer oil insulation. The megavolt paper film composite capacitor arm includes a casing, end caps, a capacitor element, an expander and a metal cavity, wherein the casing is made of an FRP material in a vacuum casting process and is in the square tube shape, the end caps are two and are respectively fastened and sealed at flanges at both ends of the casing, a screw hole is formed in one end cap, the other end cap is provided with an oil hole, the capacitor element and the metal cavity are disposed in the casing, the metal cavity is close to the end cap with the screw hole, the expander is disposed in the metal cavity, a gas nozzle extends out of the casing and the end caps in sequence, the capacitor element is formed by sequentially laminating a polypropylene film, a capacitor paper and a metal aluminum foil, the metal cavity is a cylindrical structure opening at one end, an enclosed end of the metal cavity closely compresses the capacitor element, and the metal cavity is filled with an insulating medium.

Description

Technical field [0001] The invention belongs to the technical field of pulse power, and in particular relates to a megavolt-level paper film composite capacitor arm for an electromagnetic pulse simulation device, a modular high-voltage pulse capacitor and a design and manufacturing method thereof. Background technique [0002] High-voltage pulse capacitors are commonly used energy storage components in the field of pulse power. In the electromagnetic pulse environment simulation generation technology, large-scale electromagnetic pulse simulation devices often use two-stage pulse compression technology to generate double exponential nanosecond pulse waveforms that meet the IEC (International Electrotechnical Commission) standard. The pulse compression system passes high voltage The combination of pulse capacitor and high voltage switch realizes compression and adjustment of the previous pulse voltage. The capacitance of the high-voltage pulse capacitor in the first-stage pulse co...

AI Technical Summary

Problems solved by technology

[0005] 1. Affected by charge attraction, impurities in transformer oil (such as carbon particles, dust, etc.) may adhere to capacitor elements

[0006] 2. Air bubbles may remain on the capacitor element during the soaking process

[0007] Both of the above will have a negative impact on the insulation performance of the high-voltage pulse capacitor, resulting in a drop in withstand voltage. Therefore, for an electromagnetic pulse simulation device that uses transformer oil for insulation, it is necessary to redesign the high-voltage pulse capacitor in the first-stage pulse compression system

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