A method for suppressing radiation emission of magnetic isolation communication equipment in power system

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 in particular relates to a method for suppressing radiation emission of magnetically isolated communication equipment in a power system. Background technique [0002] With the construction of the smart grid, the requirements for communication functions in the power system are becoming more and more stringent. Because the environment of the power system is generally relatively harsh, it is necessary to require the communication equipment in the system to adopt a magnetic isolation system to ensure the normal operation of the equipment, and the resulting radiation emission problem is also relatively prominent. In order to ensure that the radiation emission of a device does not affect other devices, according to industry standards, the radiation emission of all devices must meet the requirements of FCCCLASSB. There are many ways to reduce radiated emissions, such as using byp...

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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