Substation primary equipment temperature monitoring inspection system

Abstract

The invention provides a substation primary equipment temperature monitoring and inspection system, including a passive temperature measurement sensor, a hand-held inspection terminal and a background analysis and early warning system; the passive temperature measurement sensor is used for temperature monitoring at each key point of the substation primary equipment. One is set each; the hand-held inspection terminal is carried by the inspection staff; the passive temperature measurement sensor is wirelessly connected to the hand-held inspection terminal; the hand-held inspection terminal is connected to the background analysis and early warning system by communication; Circuitry, temperature sensing circuit, digital logic circuit and memory The hand-held inspection terminal includes a microprocessor, an interface module, a storage module, a radio frequency oscillator, a radio frequency transmitter, a radio frequency receiver, an amplifier, a parabolic mirror, an antenna and a power supply module. The invention has the advantages of low cost, convenient use, strong anti-interference ability and applicability, improves the inspection efficiency of electric equipment, and has good social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of substation primary equipment monitoring, in particular to a substation primary equipment temperature monitoring inspection system. Background technique [0002] It is very common for substation primary side equipment to generate heat due to various reasons during operation, resulting in failure of substation power supply system. Therefore, the temperature monitoring and timely inspection of the primary side equipment of the substation are directly related to the normal operation of the power transmission and transformation system. At present, the temperature monitoring methods of primary side equipment in substation mainly include temperature test wax sheet method, temperature display record label method, infrared temperature measurement method or far infrared camera temperature measurement, optical fiber temperature measurement method, etc. The temperature test wax chip method is mainly to place a tempe...

AI Technical Summary

Problems solved by technology

The temperature test wax chip method is mainly to place a temperature test chip on the key part of the equipment that is prone to heat. When the temperature of the monitored point exceeds the melting point of the temperature test chip, the temperature test chip will melt and drip down. Using this method, the on-duty staff will Timely inspect all the temperature test wax chips and find that they melt and deal with them in time. Therefore, the labor intensity of the on-duty personnel is relatively high. If the temperature test chips are not found to be heated and melted in time due to negligence, there will be hidden dangers of accidents; the temperature recording label method adopts temperature sensitive The color-changing temperature measurement technology is characterized by small size and low price, but the disadvantage is that it needs manual inspections on a regular basis and cannot be automatically recorded; the infrared temperature measurement method uses infrared thermal imager equipment to scan and inspect all equipment in the substation, but infrared The equipment is susceptible to temperature measurement errors due to the influence of sunlight, so the test can only be carried out at night, and the cost is high, and the limitations are obvious; the optical fiber temperature measurement method uses distributed optical fiber sensors to monitor electrical equipment such as transformers, cables, and distribution cabinets. The heating part of the equipment is used to measure the temperature, and the measured temperature signal is transmitted to the signal receiving equipment through the optical fiber, and the battery is used as the power supply. The disadvantages are: the battery replacement is troublesome, the optical fiber is easily polluted, the insulation is affected, and the bending degree of the optical fiber is limited.

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