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System for monitoring noise and vibration of power transformer

A power transformer, sound technology, applied in the direction of measuring electric variables, instruments, measuring electricity, etc.

Inactive Publication Date: 2011-09-14
深圳思量微系统有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the problem of low-cost, high-sensitivity, and high-reliability monitoring points that are difficult to effectively implement in the existing power transformer health monitoring, and provide a power transformer health monitoring method with low cost and multi-point layout monitoring points , real-time monitoring of abnormal sound and vibration of all power transformers in the area, so as to carry out health analysis and fault prediction of power transformers

Method used

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  • System for monitoring noise and vibration of power transformer
  • System for monitoring noise and vibration of power transformer
  • System for monitoring noise and vibration of power transformer

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Embodiment Construction

[0014] The features and advantages of the present application will be described with reference to the accompanying drawings.

[0015] For the convenience of expression, we refer to the monitoring unit as SP and the monitoring center as SC. Through the interconnection of a series of SPs and SCs, the monitoring information of multiple power transformers in the monitoring area can be collected, so that the sound and vibration information of the power transformers can be reliably transmitted to the monitoring center, and the health status of all monitored units can be obtained. The entire structure includes at least one SP and at least one SC, at least one of SP and SC is interconnected, and the interconnection of SC and SC, such as Figures 1 to 3 shown.

[0016] The interconnection between SP and SC, SC and SC can be wireless or wired.

[0017] Figure 4 It is an embodiment of SP, which includes two copolymer piezoelectric sound sensing units and one copolymer piezoelectric v...

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Abstract

The invention discloses a method for monitoring noise and vibration of a power transformer. In the method, a plurality of monitoring units and a plurality of monitoring centers which are distributed in one area are involved, wherein each of the monitoring units comprises one or more copolymer piezoelectric sensing units for sensing the noise and the vibration of the power transformer with the frequency of 0.01 to 10kHz, and a signal processing unit; the signal processing unit preprocesses received sensing signals or data of the sensing units and sends the preprocessed sensing signals or data; the monitoring centers are used for receiving the data sent by the plurality of monitoring units in the area and analyzing the received data; and the monitoring centers can exchange data so as to acquire noise information and vibration information of all power transformers in the area, and forecast faults of the power transformers. The invention has the characteristics of low cost, easiness of installation and flexibility of networking; and real-time health monitoring and fault prealarming of a power transformer group can be realized.

Description

【Technical field】 [0001] The invention relates to the field of power equipment monitoring instrumentation, sensors and circuit design, in particular to a low-cost monitoring method that can flexibly arrange monitoring points and comprehensively monitor the sound and vibration of a power transformer in an area, thereby obtaining the health status of the power transformer and giving an early warning. 【Background technique】 [0002] Large power transformer is one of the key components in power system equipment, and its safe operation is of great significance to ensure the normal operation of the power grid. Once an accident occurs during operation of a large-scale power transformer, the maintenance period will be long, the cost will be high, and it may cause large-scale power outages, resulting in huge economic losses. If online health monitoring and fault warning are carried out on the power transformers in operation, abnormalities, faults and damages of transformers can be de...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 冯晓星王新安葛彬杰王金泊
Owner 深圳思量微系统有限公司
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