High-frequency harmonic isolation device and operating method thereof

Abstract

An embodiment of the invention provides a high-frequency harmonic isolation device and an operating method thereof. The high-frequency harmonic isolation device comprises a high-impedance harmonic isolation module and a harmonic low-pass module, wherein an output end of the high-impedance harmonic isolation module is an output end of the high-frequency harmonic isolation device, the high-impedanceharmonic isolation module is resonant in a high-impedance state within a harmonic frequency band to be isolated, the high-impedance harmonic isolation module comprises a capacitor and an adjustable inductor, and the impedance and frequency band of the high-impedance harmonic isolation module are adjustable; an output end of the harmonic low-pass module is serially connected with an input end of the high-impedance harmonic isolation module, an input end of the harmonic low-pass module is an input end of the high-frequency harmonic isolation device, the harmonic low-pass module is in a low-impedance state within the harmonic frequency band to be isolated, the harmonic low-pass module comprises a capacitor and an adjustable inductor, and the impedance and frequency band of the harmonic low-pass module are adjustable. The high-frequency harmonic isolation device and the operating method thereof can achieve the purpose of isolating and governing high-frequency harmonics, are adjustable inimpedance and frequency band, and can meet the requirements of isolating high-frequency harmonics in different situations.

Description

Technical field [0001] The invention relates to the field of electric power technology, in particular to a high-frequency harmonic isolation device and a working method thereof. Background technique [0002] With the improvement of production level and people's living standards, a large number of non-linear electrical equipment has been put into operation in the power grid, resulting in an increasing proportion of the harmonic components of the power grid. It not only increases the power supply loss of the power grid, but also interferes with the normal operation of the protection devices and automation devices of the power grid, causing the malfunction and refusal of these devices, and directly threatening the safe operation of the power grid. [0003] In addition to low-frequency components, the above-mentioned harmonics also contain high-frequency components. The high-frequency components mainly affect the communication equipment, from the least to the communication quality, and...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a high-frequency harmonic isolation device to solve the technical problem that the impedance and frequency of the wave trap in the prior art are not adjustable

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