A self-energy-capturing power supply device for power equipment state detection sensors

Abstract

The invention discloses a self-powered supply unit used for an electric power device state detection sensor, comprising a voltage power acquisition unit, a current power acquisition unit, an energy storage unit and an energy storage control unit, wherein the voltage power acquisition unit and the current power acquisition unit respectively or simultaneously acquire energy of high voltage and low current from the electric device; through the energy storage unit, low voltage and high current are converted and electric energy is stored; when the electric power device state detection sensor requires electric energy to operate, the energy storage control unit controls the energy storage unit to provide electric energy to the electric power device state detection sensor; and when the electric quantity of the energy storage unit is insufficient, the energy storage control unit timely closes a discharge circuit, and the energy storage control unit continues to store energy. The self-powered supply unit in the invention is low in cost and long in service life, and can provide reliable energy supply to sensors.

Description

technical field [0001] The invention relates to a self-energy-capturing power supply device used for a state detection sensor of electric power equipment, and belongs to the technical field of state detection of electric power equipment. Background technique [0002] The State Grid Corporation of China proposes a strong smart grid, that is, a strong grid with UHV grid as the backbone grid and coordinated development of grids at all levels as the basis, supported by a communication information platform, featuring informatization, automation, and interaction, including power system The six links of power generation, transmission, transformation, power distribution, power consumption and dispatch cover all voltage levels and realize the highly integrated integration of "power flow, information flow and business flow". It is strong, reliable, cost-effective, clean and environmentally friendly. A modern power grid with transparent, open and friendly interactive connotations. [...

AI Technical Summary

Problems solved by technology

The main problems are: first, the cost is high, and its procurement cost is often ten times or even twenty times that of the sensor, which has lost its economic significance; second, it is not easy to install, and the optical fiber is placed from the high voltage side to the low voltage side. The amount of engineering is huge, and it is easy to be damaged because it is arranged on the outside of the equipment; the third is the low power, which can only provide a maximum power of 5V and 100mA, which is lower than the power requirements of most sensors and can only be applied to a small number of sensors

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