Non-contact power taking device for ultra-high voltage transmission line and installation method

Abstract

The invention relates to a non-contact power taking device for an ultra-high voltage transmission line and an installation method, thereby supplying power to monitoring equipment around the ultra-high voltage transmission line. The device comprises a collector, a rectifying circuit, an energy storage circuit and a battery which are connected in sequence, a charging and discharging control circuit is arranged between the energy storage circuit and the battery, and the collector is arranged on a tower. The charging and discharging control circuit comprises a hysteresis comparator and a field effect transistor, the source electrode and the drain electrode of the field effect transistor are connected with the energy storage circuit and the battery respectively, the output end of the hysteresis comparator is connected with a grid electrode of the field effect transistor, and when the voltage of the energy storage circuit is higher than the upper limit voltage of the hysteresis comparator, the field effect transistor is conducted and the energy storage circuit charges the battery. When the voltage of the energy storage circuit is lower than the upper limit voltage of the hysteresis comparator, the field effect transistor is disconnected, and the collector charges the energy storage circuit. Compared with the prior art, the non-contact power taking device has the advantages of high charging efficiency, long service life, wide application range and the like.

Description

technical field [0001] The invention relates to a wireless power acquisition technology for UHV transmission lines, in particular to a non-contact power acquisition device and installation method for UHV transmission lines. Background technique [0002] As there are more and more UHV transmission lines, and the lines are relatively long, the geographical and climatic environment is complex, which makes the inspection of transmission lines more difficult. At present, in order to facilitate the inspection of UHV transmission lines, some monitoring devices have been arranged near the transmission lines. However, the positions of these monitoring devices are relatively high, and it is difficult to replace the batteries. Therefore, the energy supply problem of the monitoring device is a difficult problem. At present, the monitoring device is usually powered by wireless power collection device. The wireless power collection device directly uses electric field coupling or electrom...

AI Technical Summary

Problems solved by technology

[0004] First, the installation location of the wireless power taking device is an important factor affecting the efficiency and safety of power taking. At present, when installing a wireless power taking device, the wireless power taking device is usually fixed on the transmission line. Due to the high voltage of the UHV transmission line, A strong magnetic field will be generated around it, and the wireless power-taking device itself contains metal materials and batteries. When the magnetic field directly acts on the metal material and the battery, it will generate heat, which will cause the line power-taking device to malfunction for a long time, and even lead to safety accidents , and the charging voltage of the battery is unstable, which will reduce the service life of the battery;

[0005] The second is that the wireless power-taking device directly uses electric field coupling or electromagnetic induction to collect electric energy. The voltage in the UHV transmission line is unstable, and the field strength generated by it is unstable. Therefore, the charging voltage provided by the wireless power-taking device for the battery is unstable, and the field strength is relatively high. The small thing is that the charging voltage provided by the wireless power-taking device for the battery is not enough to supply power for the battery, resulting in the wireless power-taking device being unable to charge the monitoring device, and the utilization rate of electric energy is low

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