A silent power capacitor

Abstract

A silent power capacitor of the present invention comprises a casing, a core and a core encapsulation film arranged in the casing, an outlet terminal fixed outside the casing, and core lead wires; the core is coated with an encapsulation film; the encapsulation The membrane is composed of two base films and a network skeleton layer sandwiched therein, and the space between the two base films and the network skeleton layer is filled with plastic damping grease. Through the compounding of two layers of base film and plastic damping grease, a practical and convenient core outsourcing structure is provided, which can not only fasten the core and protect the lead wire structure well, but also satisfy the insulation between the core and the shell, and due to the double The setting of the base film can strengthen its structural characteristics and effect, reduce the number of coating layers, and simplify the product process; use plastic damping grease as the receptor, effectively reduce the operating noise of the power capacitor, and achieve a quiet effect; at the same time, because the damping grease is composed of Composite with special polymer materials with good electrical insulation, which enhances the insulation effect and improves the scope of application and withstand voltage level of the product.

Description

technical field [0001] The invention relates to the technical field of power capacitors, in particular to a silent power capacitor. Background technique [0002] With the development of the electric power industry, the application scale of power capacitors is getting larger and larger, especially in the complete sets of power capacitors used in large quantities in ultra-high voltage transmission systems, each capacitor set is often hundreds or even thousands of high-voltage power capacitors. Capacitors are combined in series and parallel, and this capacitor device plays an important role in improving the power factor and transmission capacity of the power system. [0003] However, a new problem that troubled everyone also appeared, which is noise. People usually think that power capacitors belong to static power equipment, and will not produce large noise during work. In fact, large power capacitors are in operation due to factors such as harmonics and strong electromotive ...

AI Technical Summary

Problems solved by technology

However, this noise reduction board does not achieve the desired effect, and at the same time increases the volume and oil consumption of the capacitor, thereby increasing the cost

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