Simple electric field induction energy-taking power supply

Abstract

The invention discloses a simple electric field induction energy-taking power supply, and the power supply comprises an energy-taking module, a rectification energy storage module, a discharge controlmodule and a voltage stabilization module which are cascaded in sequence; the energy-taking module generates a space displacement current through equivalent capacitance between the metal induction polar plate and the high-voltage wire, and obtains electric field energy from a space electric field; the rectification energy storage module rectifies the obtained spatial displacement current into a direct current to charge an energy storage capacitor; the discharge control module performs on-off control on energy storage and release of the energy storage capacitor, and releases the energy when voltage at two ends of the energy storage capacitor reaches a discharge conduction threshold value; when the energy storage voltage is reduced to a discharge cut-off threshold value, only energy is stored; and the voltage stabilization module stabilizes the discharge voltage of the energy storage capacitor and supplies the stabilized voltage to a load. The simple electric field induction energy-taking power supply provided by the invention does not need to supply energy to a load after impedance conversion of a transformer, has the advantages of simple and convenient power supply circuit, easiness in implementation, small size and the like, and provides a new way for a working power supply of an online monitoring device of a power transmission line.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring equipment for power systems, in particular to a simple electric field induction energy harvesting power supply. Background technique [0002] With the development of the ubiquitous electric power grid, transmission lines are an important part of the power system, and the use of online monitoring devices for real-time perception and monitoring of their state parameters is the basis. The working power supply of the existing on-line monitoring device for transmission lines uses solar cells or electromagnetic induction power sources, etc., which have disadvantages such as being greatly affected by environmental factors, large volume, and complex structure, and it is difficult to meet the requirements of the site. The working power supply has become a constraint for online monitoring of transmission lines. The technical bottleneck of device development. Therefore, it is of practical enginee...

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Problems solved by technology

At home and abroad, the research mainly focuses on the energy harvesting method based on the transformer impedance transformation characteristics to obtain electric field energy, and has achieved certain research results and progress. This method can obtain higher energy, but it has large volume, complex calculation of transformer load impedance changes, Problems such as the complexity of the discharge control circuit have affected the application range of electric field induction energy harvesting technology to a certain extent

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