On-line energy harvesting system for ice melting device of ultra-high voltage four-split conductor transmission line

Abstract

The invention provides an online energy acquiring system used for an ultrahigh voltage quad-bundled conductor power transmission line de-icing device. The online energy acquiring system comprises an energy acquiring transformer arranged on a bus bar of the de-icing device and a power module electrically connected with the secondary side of the energy acquiring transformer. The power module at least comprises a rectification circuit electrically connected with the secondary side of the energy acquiring transformer, a first voltage stabilization module electrically connected with the output end of the rectification circuit and a second voltage stabilization module electrically connected with the output end of the first voltage stabilization module, wherein the first voltage stabilization module supplies power to a controller of the de-icing device, and the second voltage stabilization module supplies power to a circuit breaker of the de-icing device. The online energy acquiring system can achieve three-path output, it is guaranteed that power can be supplied to the controller and the circuit breaker of the de-icing device at the same time, stable electric energy can be provided, and thus it is guaranteed that the intelligent de-icing device can keep working stably, and total absence of human intervention is achieved.

Description

technical field [0001] The invention relates to an energy harvesting device, in particular to an on-line energy harvesting system used for an ice-melting device for an ultra-high voltage four-split wire transmission line. Background technique [0002] Ice disasters occur in winter memory, resulting in ice covering high-voltage power transmission lines. Increased icing leads to an increase in line load, and in severe cases, it may even cause major accidents such as transmission line disconnection and tower collapse that affect the safe operation of the power system, causing large-scale power outages in the power grid, seriously affecting people's production and life, and causing huge social and economic losses. . [0003] The existing deicing of the icing of the transmission line is mainly on-site manual deicing or mechanical deicing with the participation of electric power personnel. Since the above two methods have their own shortcomings, people have gradually proposed int...

AI Technical Summary

Problems solved by technology

5) Using the above mixed function methods, the online energy harvesting circuit through the electromagnetic coupling of the current transformer coil is simple and the cost is low, but the difficulty in its application is that the current of the transmission line is unstable and the range of variation is very large

The laser energy supply performance is stable, but the structure is complex, the energy supply power is small, the cost is high, the laser life is short, and the cost of the laser itself is high and the transmission power is strictly limited. If the number of optical fibers is increased, the cost will inevitably increase

The energy supply method of rechargeable batteries has problems such as low battery conversion efficiency and battery aging, and the reliability is difficult to guarantee

There is also a common problem in the above-mentioned several methods, that is, for capacitive loads, it is easy to cause overshoot of the capacitive load, resulting in failure

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