Method for inhibiting radiated emission of magnetic isolation communication equipment in power system

A communication equipment, radiation emission technology, applied in the direction of printed circuits, electrical components, printed circuit components connected with non-printed electrical components, etc., can solve the problems of no practical application value, not very significant effect, increased cost, etc. , to achieve the effect of easy implementation, low cost and reduced radiation emission

Active Publication Date: 2013-09-25
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

There are many ways to reduce radiated emissions, such as using bypass capacitors, placing the equipment in a sealed grounded chassis, adding special protection on the PCB ground plane and edges, reducing system power consumption, etc., but these methods are not very effective Obviously, plus some implementation methods increase the cost and are relatively difficult to operate in practice, and have no practical application value

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  • Method for inhibiting radiated emission of magnetic isolation communication equipment in power system
  • Method for inhibiting radiated emission of magnetic isolation communication equipment in power system
  • Method for inhibiting radiated emission of magnetic isolation communication equipment in power system

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the drawings.

[0036] A method for suppressing radiation emission of a magnetically isolated communication device in a power system is provided. The method includes the following steps:

[0037] Step 1: Divide the radiation emission in the magnetically isolated communication equipment into dipole radiation from input to output and edge radiation;

[0038] Step 2: Use board-level embedded stitching capacitor method to suppress dipole radiation from input to output;

[0039] Step 3: Adopt the via hole guardrail edge protection method to suppress edge radiation.

[0040] In the step 1, when the driving current source passes through the gap between the ground layers, the input to the output dipole radiation is generated. In a magnetically isolated power system, the high-frequency image charge associated with the power signal cannot cross the boundary, resulting in a differential signal on the gap, w...

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Abstract

The invention provides a method for inhibiting radiated emission of magnetic isolation communication equipment in a power system. The method comprises the following steps that radiated emission in the magnetic isolation communication equipment is divided into input-to-output dipole radiation and fringe radiation; a board-level embedded type splicing capacitance method is adopted to inhibit input-to-output dipole radiation; a through hole guardrail fringe protection method is adopted to inhibit fringe radiation. The method is low in cost, easy to realize, small in generated capacitance parasitic inductance value and capable of obviously reducing radiation emission in the magnetic isolation communication equipment in the system, guarantees the stability and the reliability of a communication system in intelligent power grid construction, and has practical engineering application value.

Description

Technical field [0001] The invention belongs to the technical field of power system communication, and specifically relates to a method for suppressing radiation emission of a magnetically isolated communication device in a power system. Background technique [0002] With the construction of smart grids, the requirements for communication functions in the power system are becoming more and more stringent. Since the environment of the power system is generally harsh, it is bound to require the communication equipment in the system to adopt a magnetic isolation system to ensure the normal operation of the equipment, and the radiation emission problems arising therefrom are also more prominent. In order to ensure that the radiation emission of one device does not affect other devices, according to industry standards, the radiation emission of all devices must meet the requirements of FCC CLASS B. There are many ways to reduce radiation emission, such as using bypass capacitors, pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00H05K1/11H05K1/18
Inventor 陈磊吴鹏刘川陶静吴军民张刚黄在朝黄辉邓辉王玮沈文侯功喻强姚启桂于海虞跃张增华王向群李春龙孙晓艳王鹤于鹏飞陈伟任杰黄治
Owner STATE GRID CORP OF CHINA
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