Passive power supply for electrical device detection

Abstract

Disclosed is a passive power supply for electrical device detection. The passive power supply comprises a temperature differential power generation device, a power supply management module, a wireless sensor module and electromagnetic screens. A hot face of the temperature differential power generation device is directly attached to a portion of an electrical device, wherein the portion of the electrical device generates waste heat; and the waste heat released in operation of the electrical device is used for power generation. Electric energy generated by the temperature differential power generation device is transmitted to the power supply management module, and stable voltage and current are output for supplying power to the wireless sensor module after regulation by the power supply management module. The periphery of the power supply management module and the periphery of the wireless sensor module are wrapped by the electromagnetic screens. The power supply management module is composed of an energy storage module, a boosting module, a voltage reducing module and a constant flow source module. Output of the temperature differential power generation device is transmitted to the boosting module through the energy storage module and then supplies power to the voltage reducing module and the constant flow source module respectively. The voltage reducing module is in parallel connection with the constant flow source module. Both an input end of the voltage reducing module and an input end of the constant flow source module are connected to an output end of the boosting module.

Description

technical field [0001] The invention relates to a passive power supply for electrical equipment detection. Background technique [0002] On-line detection of electrical equipment can detect defects in a timely manner, prevent equipment accidents, and improve the safety and reliability of operation; it can enhance the pertinence of maintenance, improve the quality and efficiency of maintenance, and save a lot of manpower and material resources; early detection of equipment internal There are latent defects, and the advantages of mastering the development of defects. [0003] There are many types of detection objects for electrical equipment, among which transformers are due to the decomposition of hydrogen, carbon monoxide, carbon dioxide, and various low-molecular hydrocarbon gases by transformer oil under the action of heat and electricity. The composition of the gas is related to the gas production rate, so it is necessary to detect the composition and content of these ga...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the defect that the existing electrical equipment cannot be detected online by direct contact, and to propose a passive power supply for electrical equipment detection based on the rational use of waste heat and other energy sources

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