A dual-core single-winding line induction energy harvesting device and its configuration method

Abstract

The invention discloses a twin-magnetic-core single-winding circuit induction energy acquiring device and a configuration method thereof. The twin-magnetic-core single-winding circuit induction energyacquiring device comprises a high voltage transmission line and a load, a magnetic core group sheaths the outside of the high voltage transmission line, a winding is wound outside the magnetic core group, the two ends of the winding are respectively connected with the load, and the magnetic core group is formed by overlaying two or more magnetic cores. For significantly improving initial magneticconductivity and saturation characteristic of a composite magnetic core topology and expanding an effective working current interval of the energy acquiring device, appropriate lengths of a first magnetic core and a second magnetic core are selected. The twin-magnetic-core single-winding circuit induction energy acquiring device disclosed by the invention can solve the inherent problem that the traditional feed through circuit induction energy acquiring topology can not have two advantages, namely high permeability and high saturation characteristic, at the same time, and in the field of local power supply of high voltage transmission line online monitoring equipment, the magnetic core topology and a parameter design method thereof are simple and diversified, are easier to implement and have good economy and practicability.

Description

technical field [0001] The invention belongs to the field of equal-potential on-site power supply for high-voltage transmission line on-line monitoring equipment, and in particular relates to a dual-core single-winding line induction energy harvesting device and a configuration method thereof. Background technique [0002] With the widespread application of on-line monitoring technology for power transmission and transformation lines and equipment in power systems, the monitoring functions and scope of power sensor networks are becoming wider and wider, such as insulator pollution flashover monitoring and cable joint temperature measurement. These monitoring sensors are usually deployed in the wild, with many nodes and harsh working environments, so the operation and maintenance work is extremely complicated and difficult. In order to ensure the stable and effective work of the monitoring device, the problem of energy harvesting and power supply needs to be solved urgently. ...

AI Technical Summary

Problems solved by technology

However, there is a fatal weakness in the traditional inductive energy harvesting method, that is, the magnetic core material cannot be compatible with high initial magnetic permeability and high saturation characteristics, which must be compatible in the process of line energy harvesting.

Therefore, when the line current fluctuates in a large range, the energy harvesting device may not be able to obtain a certain amount of energy at a certain moment, or at another moment due to the oversaturation of the magnetic core, it will cause serious heating and damage the energy harvesting device itself.

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