Method for improving accuracy of transformer substation boundary noise measurement

A technology of factory boundary noise and substation, which is applied in the field of improving the measurement accuracy of substation factory boundary noise, can solve the problems of background noise interference, increase the work intensity of measurement personnel, and cannot measure at multiple points at the same time, so as to improve accuracy and reduce interference Effect

Inactive Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +1
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Problems solved by technology

Due to background noise interference and simultaneous multi-point measurement, this measurement method not only increases the work intensity of the measurement personnel, but also affects the reliability and accuracy of the monitoring data

Method used

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  • Method for improving accuracy of transformer substation boundary noise measurement
  • Method for improving accuracy of transformer substation boundary noise measurement

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment

[0020] The measurement system used in this embodiment includes 5 identical noise spectrum measurement units and a set of evaluation analysis system, wherein the noise spectrum measurement unit is mainly used for continuous measurement of parameters such as sound power level, noise real-time spectrum, temperature, wind speed, and The measurement data is transmitted to the evaluation and analysis system, and the evaluation and analysis system mainly receives, processes and evaluates and analyzes the data. Each noise spectrum measurement unit communicates with the evaluation and analysis system through a 2.4GHz frequency band wireless network.

[0021] The noise spectrum measurement unit in this embodiment is composed of AWA6291 real-time signal analyzer, micro weather monitor, AWA8571 wireless data transmission module, measurement bracket, out...

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Abstract

The invention provides a method for improving accuracy of transformer substation boundary noise measurement. A measuring system adopted for the method comprises a noise spectrum measuring unit and an evaluation analysis system of a host. The method includes the following steps that the noise spectrum measuring unit is utilized to monitor noise spectrums of transformer substation noise sources such as transformers and current converters, monitoring data are transmitted to the evaluation analysis system of the host through a wireless network, and the characteristic spectrums of the transformer substation noise sources are evaluated and discriminated; spectrums of measuring points of a boundary, spectrums of measuring points of the noise sources and corresponding sound pressure levels are continuously monitored; when the sound pressure level change within the characteristic spectrum range of the noise sources is consistent with the sound pressure level change of the measuring points of the boundary within the characteristic spectrum range of the noise sources, noise values monitored at the measuring points of the boundary can accurately reflect the real situation of the noise the boundary of a transformer substation. Accuracy and scientificity of noise monitoring data of boundaries of enterprises can be improved, wherein in the enterprises, the characteristic spectrums of the noise sources are remarkable, and background noise is difficulty monitored by shutting down the noise sources.

Description

technical field [0001] The invention relates to a method for improving the measurement accuracy of noise at the boundary of a substation, and belongs to the technical field of electromagnetic noise protection. Background technique [0002] With the development of social economy, a large number of substations are built in the living areas of urban residents. Electrical equipment such as transformers and transformers in substations will inevitably generate noise during operation. In order to maintain reasonable noise emissions from enterprises and avoid noise from affecting the people Production and life bring harm, so it is of great significance to monitor the noise of substations and improve the accuracy and scientificity of noise monitoring data. [0003] At present, the single-point short-term test system is used for the noise monitoring of the substation boundary. The monitoring data obtained by this system need to be manually collected and counted to obtain a long-term ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 徐锐梅重民伍发元邓永强周金泉刘平
Owner STATE GRID CORP OF CHINA
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