Temperature monitoring system for key part in switchgear based on low-cost infrared thermal imaging technology

A monitoring system and switchgear technology, applied in the field of sensing technology, online monitoring of switchgear, and infrared thermal imaging technology, can solve the problems that the regional temperature cannot be clearly characterized, the internal structure of the switchgear is not suitable, and the wide application is limited, and the improvement is achieved. Safety and reliability, low cost, and the effect of reducing labor intensity

Active Publication Date: 2019-05-21
FUZHOU UNIVERSITY
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Problems solved by technology

[0006] The infrared probe temperature measurement method uses an infrared probe as a temperature sensor, and realizes temperature measurement through subsequent transmission and processing circuits. However, this method is not suitable for switch cabinets with complex internal structures, and can only measure the temperature of one point, which is not obvious to the regional temperature. characterize
Infrared imaging thermometry can measure regional temperature, but due to its high cost and the large number of switchgears, each switchgear has nearly ten key monitoring parts, which limits the wide application of this method

Method used

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  • Temperature monitoring system for key part in switchgear based on low-cost infrared thermal imaging technology
  • Temperature monitoring system for key part in switchgear based on low-cost infrared thermal imaging technology
  • Temperature monitoring system for key part in switchgear based on low-cost infrared thermal imaging technology

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] This embodiment adopts an infrared thermal vision technology to avoid direct contact with high-voltage switchgear components during temperature measurement, and changes the online temperature measurement method from point temperature measurement to regional temperature measurement with higher accuracy. Due to temporary temperature changes or data disturbances, there will be large errors in single-point temperature measurement. If the temperature of the measurement point is disturbed near the set threshold, the alarm device will continue to prompt the abnormal situation. Therefore, the threshold judgment based on the single-point temperature value law will no longer apply. The regional temperature represents more information, and the limited disturbance of the single-point temperature value will not have a great impact on the global temperature di...

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Abstract

The invention relates to a temperature monitoring system for a key part in a switchgear based on low-cost infrared thermal imaging technology. The system comprises a monitoring terminal and a temperature collecting and displaying system that are in communication connection. Temperature data, collected by the temperature collection and display system, of a key part area in a switchgear are transmitted to the monitoring terminal; and the monitoring terminal stores and analyzes the data. With the low-cost and low-resolution infrared thermal imaging technology, the direct contact with the high-voltage switchgear part is avoided; and the temperature in the small area can be measured accurately. Therefore, the regional temperature measurement function of the key parts in the switchgear is realized and the cost of infrared temperature measurement is lowered.

Description

technical field [0001] The invention relates to the technical fields of infrared thermal imaging technology, sensing technology and on-line monitoring of switch cabinets, in particular to a temperature monitoring system for key parts in a switch cabinet based on low-cost infrared thermal vision technology. Background technique [0002] Switchgear is an important equipment to ensure the safe operation of the power system. It is widely used, mainly for breaking or closing power lines, transmitting and switching power loads, and taking faulty lines and equipment out of operation. How to improve its safety and reliability has always been a very important research content. [0003] The important components in the switchgear include circuit breakers, disconnectors, load switches, busbars, etc. Due to long-term wear or long-term oxidation of these parts, or due to mechanical looseness, the contact resistance at the conductive connection will increase. The rated operating current o...

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Application Information

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IPC IPC(8): G01J5/00G01J5/02
Inventor 缪希仁鄢齐晨陈静江灏
Owner FUZHOU UNIVERSITY
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