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HPLC-oriented power line noise suppression method

A technology of noise suppression and power line, applied in the field of power line noise suppression for HPLC, can solve the problems of low work efficiency, difficult realization, poor effect, etc., and achieve the effect of high work efficiency and good effect

Inactive Publication Date: 2021-07-02
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main disadvantage of the existing technical solution is that it is necessary to analyze and model the characteristics of the noise to be suppressed. For the complex noise in the actual scene, the effect is often not good, and the implementation is also relatively difficult.
[0008] How to solve the technical problem of low efficiency and poor effect of power line noise suppression

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  • HPLC-oriented power line noise suppression method
  • HPLC-oriented power line noise suppression method
  • HPLC-oriented power line noise suppression method

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0035] In the following description, a lot of specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, and those skilled in the art can do without violating the connotation of the application. ...

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Abstract

The invention discloses an HPLC-oriented power line noise suppression method, and relates to the technical field of power communication. Based on a self-adaptive power line noise suppressor, pre-noise N'(n) is extracted from a power line according to preset pre-time, self-adaptive noise suppression is carried out on a power line signal d(n) through the pre-noise N'(n), a noise reduction signal e(n) is obtained, and the self-adaptive power line noise suppressor comprises a self-adaptive filter and a subtracter which are electrically connected with each other; and through the adaptive power line noise suppressor, pre-noise N'(n) is extracted to carry out adaptive noise suppression on a power line signal d (n), a noise reduction signal e(n) and the like are obtained, the working efficiency of power line noise suppression is high, and the effect is good.

Description

technical field [0001] The invention relates to the technical field of power communication, in particular to an HPLC-oriented power line noise suppression method. Background technique [0002] Low-voltage power line high-speed carrier communication (High Speed ​​Power Line Communication, HPLC) is a new type of power line communication technology. At present, HPLC technology has been widely used in the field of domestic electricity consumption information collection. Compared with the low-speed narrow-band power line carrier communication in the 3-500kHz frequency range, HPLC works in the 0.7-12MHz frequency band, with low and relatively stable noise amplitude and good channel quality; using Orthogonal Frequency Division Multiplexing (OFDM) technology, the frequency band utilization rate is high , Strong anti-interference ability. [0003] According to the Q / GDW 11612 standard, there are 4 frequency bands available for HPLC, which are 1.953-11.96MHz, 2.441-5.615MHz, 0.781-2...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04B3/56H04B15/00
CPCH04B3/54H04B3/56H04B15/00
Inventor 胡文建刘保安谷超张益辉赵会峰高波张颖陈瑞华郭思炎孙静杨阳张伟孙莹晖王聪王代远朱庆洋
Owner STATE GRID CORP OF CHINA
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