Infrared array detection and positioning system and method for hot spots of electrical equipment faults in substations

Abstract

The invention discloses a system for detecting and locating a faulty heating point of substation electrical equipment through an infrared array. The system comprises a plurality of infrared probe groups correspondingly arranged near a plurality of pieces of electrical equipment. Each infrared probe group includes at least one infrared probe. The system further comprises a signal processing system connected with the infrared probes. The infrared probes in corresponding positions in each infrared probe group face the same direction, and part or all of the infrared probes point to the electrical equipment in corresponding positions. The signal processing system judges whether there is a faulty heating point and the position of the electrical equipment where a faulty heating point is located according to infrared energy transmitted by the infrared probes. In addition, the invention discloses a corresponding method. The influence of infrared background noise can be suppressed effectively. Detection error can be reduced greatly. Whether there is a faulty heating point can be detected and judged in real time and accurately, and the position of a faulty heating point can be located. Safe and reliable operation of an unattended substation can be guaranteed.

Description

technical field [0001] The invention relates to an infrared array detection and positioning system and method for a fault heating point, in particular to an infrared array detection and positioning system and method for a fault heating point of electrical equipment. Background technique [0002] Infrared diagnostic technology is used to predict the early failure defects and insulation performance of electrical equipment, so that the preventive test maintenance of traditional electrical equipment can be improved to predictive condition maintenance, which is also the development direction of modern power enterprises. Especially now that the development of large units and ultra-high voltage has put forward higher and higher requirements for the reliable operation of the power system, which is related to the stability of the power grid. The application of infrared diagnostic technology is of great significance to improve the reliability and effectiveness of electrical equipment,...

AI Technical Summary

Problems solved by technology

[0010] Since infrared temperature measurement is non-contact, there are many factors that cause deviations between the temperature measurement value of the detection target and the actual value, such as emissivity, reflectivity, distance coefficient, target size, environmental factors, etc. It is difficult to determine the heating point of equipment failure

[0011] In addition, there is a certain time span between the two routine inspections of unattended substations, usually once a week, and the number of inspections is appropriately increased in important substations. Hot spots are difficult to find in time, leaving hidden dangers to the safe and reliable operation of substations

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