Multi-sensing information fusion-based power transformer on-line monitoring system and method

Abstract

The present invention discloses a multi-sensing information fusion-based power transformer on-line monitoring system and method. With the system and method adopted, online and real-time monitoring of a power transformer can be realized reliably, and vibration, current, voltage and switching quantity information can be acquired, processed, transmitted and analyzed reliably. The multi-sensing information fusion-based power transformer on-line monitoring system of the invention comprises a multi-sensor acquisition assembly; the multi-sensor acquisition assembly includes an acceleration sensor, a voltage sensor, a current sensor, a temperature sensor and a switching quantity acquisition sensor which are respectively used for acquiring the vibration information, voltage information, current information, temperature information and switching quantity information of the power transformer; an embedded master controller is an ARM embedded system-based master controller; a remote controller is a host computer; and the host computer uses SQL Server database software to carry out open database management.

Description

technical field [0001] The invention relates to a monitoring system for a power transformer, and is particularly used for monitoring the operation status of the power transformer. Background technique [0002] Among the various equipment in the power system, the transformer is one of the main equipment, which directly affects the operation of the entire power grid, and its safe operation is of great significance to ensure the reliable operation of power equipment. [0003] The monitoring function of the traditional transformer monitoring system is too single, and generally only has the function of current and voltage monitoring; when we find the importance of vibration monitoring, some existing technologies measure vibration by installing vibration sensors; but this simple principle of information collection There are great practical technical difficulties when used in the actual 35kV or 75kV and higher voltage environment, and some pure theoretical knowledge cannot be reali...

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Problems solved by technology

[0003] The monitoring function of the traditional transformer monitoring system is too single, and generally only has the function of current and voltage monitoring; when we find the importance of vibration monitoring, some existing technologies measure vibration by installing vibration sensors; but this simple principle of information collection There are great practical technical difficulties when used in the actual 35kV or 75kV and higher voltage environment, and some pure theoretical knowledge cannot be realized in the end;

[0004] Chinese patent (authorized announcement number CN203573776U; authorized public date 2014.04.30) discloses a 220kV transformer using integrated sensor fusion technology; it integrates many information acquisition sensors, including current, voltage and vibration monitoring; Large-scale transformation of the structure, most of the sensors are placed inside the transformer, which is difficult to achieve in actual operation, because the destructive transformation of the transformer can easily lead to failure to meet the power safety operation standards, and the reliability of the transformer itself is insufficient. Problem, in this case, monitoring is meaningless, and monitoring will make the transformer more prone to problems, and will not be able to curb the occurrence of problems;

[0005] In the above patents, the further processing after information collection is not involved, but the reliable processing and transmission of information is very important. During the actual construction, we found that the existing wired data transmission technology cannot be used on site. , too many wiring harnesses introduce more uncertain factors. At the same time, due to the large electromagnetic interference of 75kV and above power transformers, the conventional installation structure similar to the above patent cannot achieve stable and reliable operation; for these defects, it is necessary to Creative new all-round design

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