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Method for controlling frequent signal emission of microcomputer resonance eliminating device

A technology of resonance elimination and resonance device, applied in circuit devices, AC network flicker reduction, AC network circuit, etc., can solve the problems of resonance, the frequent sending of the signal by the computer resonance elimination action, etc., so as to improve the reliability of power supply and ensure The effect of safe and stable operation

Inactive Publication Date: 2015-03-11
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for controlling the frequent signal transmission of the computer resonance eliminatio

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  • Method for controlling frequent signal emission of microcomputer resonance eliminating device

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings.

[0009] As shown in the attached figure, using the principle of the original microcomputer resonance elimination device, that is, by detecting the opening voltage (Uo) of the voltage transformer (TV) of the bus equipment in the substation, it is judged whether the opening voltage (Uo) of the voltage transformer (TV) of the bus equipment exceeds, If the voltage transformer (TV) opening voltage (Uo) exceeds, then judge whether the ferromagnetic resonance condition is met, and if the ferromagnetic resonance condition is not satisfied, go back and continue to detect the voltage transformer (TV) opening voltage (Uo) of the substation bus equipment. If the ferromagnetic resonance condition is met to eliminate ferromagnetic resonance, in the ferromagnetic resonance identification software flow, before sending the "resonance elimination action" and "resonance device general alar...

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Abstract

The invention discloses a method for controlling frequent signal emission of a microcomputer resonance eliminating device, and aims to solve the problem that a microcomputer resonance eliminating action emits a signal frequently due to the fact that resonance phenomena exist in a system intermittently for a long time. The method is characterized by comprising the following steps: a broadening delay loop is added to a 'resonance eliminating action' and 'resonance device common alarm' signal output loop of the microcomputer resonance eliminating device and can perform setting as required in 0-10 seconds, and 'resonance eliminating action' and 'resonance device common alarm' signals are emitted after a time period set by the broadening delay loop. Whether signals are emitted or not as required is controlled, and the problem that emission and non-emission of signals cannot be controlled is solved, monitoring and dispatching workers can have a normal work environment, the power supply reliability is improved, and safe and steady operation of a power grid is guaranteed.

Description

technical field [0001] The invention relates to the field of safety and automation of a power supply system, and more precisely relates to a method for controlling a microcomputer resonance elimination device to perform a ferromagnetic resonance elimination action and send signals frequently. Background technique [0002] Gap ferromagnetic resonance exists in the low-voltage power grid of the power supply system. After the existing microcomputer resonance elimination device is installed on site, it will also perform corresponding ferromagnetic resonance elimination according to the ferromagnetic resonance of the low-voltage power grid. Under normal circumstances, the gap ferromagnetic resonance existing in the low-voltage power grid, plus the time for the ferromagnetic resonance elimination action of the microcomputer resonance elimination device, are all completed between 100-900mS. When the ferromagnetic resonance elimination action is performed, the "resonance elimination...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/002
Inventor 王明刚宗榜林石桂平颜平丽赵创业齐慧赵峻岭
Owner STATE GRID CORP OF CHINA