Application Cases

Experiment Name: Application of High-Voltage Amplifiers in Power Line Carrier Communication and High-Voltage Monitoring

Experimental Focus: High-voltage monitoring, power line carrier communication, convolutional neural network

Experimental Equipment: ATA-2161 high-voltage amplifier, signal generator, "LED inside capacitor" device, oscilloscope, silicon avalanche photodetector, computer

Experimental Objective:
Use a signal generator combined with a power amplifier to output high-voltage alternating current, enabling wireless illumination of the "LED inside capacitor" device. By capturing the luminous characteristics of the LED, the voltage parameters (amplitude and frequency) of the high-voltage source are deduced. Additionally, wireless illumination of the "LED inside capacitor" device is achieved, and power line carrier communication is realized by collecting the LED's luminous waveform.

Experimental Procedure:

1. A signal generator combined with a high-voltage amplifier outputs an AC high-voltage signal with fixed frequency and amplitude, generating a corresponding electric field distribution around the wire.

2. The "LED inside capacitor" device, structured with an outer metal plate 1 / inner metal plate 1 - LED - inner metal plate 2 / outer metal plate 2, is placed below the wire, and the LED is wirelessly driven to emit light via electromagnetic induction.

   
   

3. A silicon avalanche photodetector captures the LED's brightness signal, converts it into a voltage signal, and displays it in real-time on an oscilloscope. A computer simultaneously processes the collected waveform to achieve high-voltage source parameter detection and power line carrier communication.

Experimental Results:

The proposed "LED inside capacitor" device can convert high-voltage on power lines into optical pulses without requiring an external power supply, thereby achieving self-powered high-voltage monitoring. This method can sensitively extract high-voltage amplitude with a goodness-of-fit as high as 0.99967. Furthermore, the optical pulse waveform generated by the device accurately reflects harmonic pollution on the high-voltage line, leading to the splitting of output optical pulses.

A 1D-CNN model was established, capable of identifying harmonic pollution on high-voltage lines with an accuracy of 94.53%. Additionally, due to the device's high sensitivity to changes in potential, it can accurately demodulate information carried on high-voltage lines and apply it to power line carrier communication.

Parameters of the ATA-2161 High-Voltage Amplifier Used in the Experiment: