CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform

Abstract

The invention provides a CT (current transducer) energy acquisition-based ultrasonic bird repelling device for a series compensation platform, and can effectively prevent and control the problem of bird trouble of a series capacitor compensation device. In the ultrasonic bird repelling device, a circuit energy acquisition CT is adopted to supply power, large current passing through a circuit is converted into a required current, the current passes through an isolated CT realize electrical isolation, the high frequency part of power frequency current is filtered by virtue of a low-pass filter, direct current voltage is rectified and output by virtue of a rectifier, a high-frequency signal generator generates a high-frequency voltage signal between 16 and 25kHz immediately, and the high-frequency voltage signal is loaded to a piezoelectric ceramic plate of an ultrasonic speaker and is amplified to generate a high-volume ultrasonic wave which is between 16 and 25kHz and has a sound pressure level not lower than 90dB by virtue of the speaker. According to the bird repelling device, the energy acquisition CT is used as a power supply to guarantee stable high-power output, so that all-weather 24-hour uninterrupted large-area bird repelling is guaranteed; and a mode that two ultrasonic speakers are connected in parallel is adopted, and ultrasonic wave with variable frequencies is alternately and continuously generated, so that birds cannot adapt to the ultrasonic wave, and the durability of bird repelling effect is guaranteed.

Description

technical field

[0001] The invention belongs to the field of electric equipment protection devices, and in particular relates to an ultrasonic bird repelling device for series compensation platforms based on CT energy harvesting. Background technique

[0002] In the design process of high-voltage, ultra-high voltage, and even ultra-high voltage power equipment, the adverse effects of birds nesting and pecking on the safety and reliability of the power system and power equipment operation should be fully considered, and effective bird repelling measures should be taken to eliminate them. weaken or eliminate. On the premise of ensuring the bird repelling effect, the possible damage to wild birds caused by improper measures should also be prevented. At present, the bird repelling devices and technologies applied in power transmission and transformation equipment mainly include wind mirror bird repellent, voice bird repellent, high-voltage electronic pulse electric shock to rep...

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