Monitoring method for state of elements of high voltage electric power equipment

Abstract

The invention provides a monitoring method for state of elements of high voltage electric power equipment. The present monitoring method for the state of the elements of the high voltage electric power equipment does not has a standard, and the absence of the standard leads to problem of false assessment to the state, wherein the standard is used for describing signals which are useful for external interference separating. The method comprises the following steps: 1. determining multiple self frequencies of the high voltage electric power equipment to be detected; 2. measuring and recording spectrum frequency of electromagnetic radiation when the electromagnetic radiation spectrum of high frequency wave band near the high voltage electric power equipment is stable; 3. comparing values of the multiple self frequencies determined in the step 1 and the frequency of the electromagnetic radiation spectrum in the step 2, and establishing information subband of the spectrum; 4. determining a standard constant value according to the spectrum value obtained from the established information subband of the spectrum; and 5. determining whether the whole technical state of the high voltage electric power equipment and the technical state of individual parts have a defect according to the standard value in the step 4. The monitoring method provided in the invention is used for monitoring the state of the elements of the high voltage electric power equipment.

Description

technical field [0001] The invention relates to a method for monitoring the state of components of high-voltage electric equipment. Background technique [0002] Early diagnosis (condition monitoring) of high-voltage power equipment has a special role in the operation control of existing transformer equipment. When developing this technology, it is most meaningful to carry out early diagnosis of the equipment without cutting off the equipment during use under the working voltage. [0003] The monitoring and interpretation of the electromagnetic radiation of equipment components themselves during normal operation is one of the important methods to monitor the status of equipment components. [0004] It is known to use the electromagnetic radiation of the electric equipment itself under the working voltage to monitor the state of the electric equipment. Spectral analysis of electromagnetic radiation from high-voltage power equipment yields information on the intensity of dis...

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Problems solved by technology

[0015] The purpose of the present invention is to solve the problem that the existing monitoring method for the state of high-voltage power equipment components does not describe a clear standard for separating useful signals from external interference, resulting in incorrect evaluation of the state. The present invention provides a state of high-voltage power equipment components monitoring method

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