Protection device based on overvoltage absorption energy storage

Abstract

The invention discloses a protection device based on overvoltage absorption energy storage. The protection device can improve the overvoltage protection effect and fully utilize the energy characteristics of overvoltage to convert the overvoltage into available electric energy to be stored. The device comprises a gas discharge tube, a piezoresistor and N stages of voltage reduction isolation energy storage circuits, wherein the N stages of voltage reduction isolation energy storage circuits are sequentially connected in series and then connected to the two ends of the piezoresistor in parallel, and each stage of voltage reduction isolation energy storage circuit comprises a high-voltage resistor, a high-voltage capacitor, a diode and a storage battery. According to the protection device, anon-linear gas discharge tube and the piezoresistor are combined with a linear element high-voltage resistor, a high-voltage capacitor, an energy storage battery and the like, lightning stroke overvoltage or internal overvoltage of a power grid is converted into low voltage capable of being absorbed by the storage battery to be charged, the storage battery stores absorbed electric energy, and theovervoltage protection effect is improved. The device is suitable for popularization and application in various power application fields.

Description

technical field [0001] The invention relates to the field of lightning and overvoltage protection, in particular to a protection device based on overvoltage absorption and energy storage. Background technique [0002] The existing lightning protection concept regards lightning as a disaster, and adopts lightning rods, shielding, grounding, reasonable wiring, and SPD (lightning protection device composed of nonlinear components, such as varistors, discharge tubes, TVS tubes, etc.) And other comprehensive lightning protection measures for lightning protection to protect the safety of equipment and personnel. For the protection of induction lightning, the measures of installing SPD are mostly adopted. Since the overvoltage generated by lightning and the overvoltage generated inside the power grid itself is a kind of electric energy, it has certain utilization value. The existing lightning protection methods are to directly introduce the overvoltage into the earth and discharge...

AI Technical Summary

Problems solved by technology

Since the overvoltage generated by lightning and the overvoltage generated inside the power grid itself is a kind of electric energy, it has certain utilization value. The existing lightning protection methods are to directly introduce the overvoltage into the earth and discharge it directly, which will cause waste of electric energy. , and the overvoltage protection effect is not good

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