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Method for suppressing high-frequency harmonic interference

A technology for high-frequency harmonics and harmonic suppression, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, etc., can solve the problem of power quality degradation in the power grid, poor filtering effect, and inability of the filter to completely suppress interference, etc. question

Inactive Publication Date: 2021-01-15
QINGDAO TOPSCOMM COMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in a typical residential electricity environment, due to the existence of some equipment with poor filtering effect, harmonics are generated instead, which are fed back to the power grid. Typical capacitor filters have the destructive effect of not being able to completely suppress interference.
All electrical equipment adopts anti-electromagnetic interference but does not pay attention to the interference caused by itself, which has the disadvantage of causing the power quality of the grid to decline

Method used

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  • Method for suppressing high-frequency harmonic interference
  • Method for suppressing high-frequency harmonic interference
  • Method for suppressing high-frequency harmonic interference

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Experimental program
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Effect test

specific Embodiment approach

[0013] according to image 3 , the specific implementation is as follows:

[0014] By performing LC series resonance matching, the harmonic component of the power grid is absorbed to achieve the effect of improving the power quality.

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Abstract

The invention discloses a method for suppressing high-frequency harmonic interference. According to the method, harmonic interference of part of frequencies on a power line is filtered out so as to protect electric energy metering equipment; the function of suppressing the harmonic interference reduces the harmonic interference on the power line, and aims to improve the environmental quality of electric equipment; and the environment of a power grid can be purified, and the requirement that the power grid quality of electricity metering equipment reaches the standard is met.

Description

technical field [0001] The invention relates to a method for suppressing high-frequency harmonic interference, in particular to the harmonic interference anti-interference ability of electricity metering equipment to a power grid, and belongs to the field of power grid quality and safety protection. Background technique [0002] In the case of a relatively complex environment of the power grid, every kind of electrical equipment is a part of the grid environment. Some electrical equipment has good electromagnetic compatibility, and some equipment has poor electromagnetic compatibility, so it will put its own The harmonics are fed back into the grid, and this part of the excess harmonics will be absorbed by other electrical equipment on the grid. When a certain device cannot sufficiently absorb the corresponding harmonic components, it will have an impact on itself. Therefore, it is necessary to prevent the interference caused by harmonics on the device side to ensure the nor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/40
Inventor 刁瑞朋王海龙陈忠祥
Owner QINGDAO TOPSCOMM COMM