Electrostatic detection device for power transmission equipment

Abstract

This utility model discloses a voltage detection device for power transmission and transformation equipment, including a voltage detector. The voltage detector includes a voltage detection circuit and an alarm circuit. The voltage detection circuit includes a voltage divider and limiter circuit, a voltage follower circuit, a second-order low-pass filter circuit, a dual-power precision rectifier circuit, a microcontroller, and an alarm circuit. The voltage divider and limiter circuit is used to induce voltage. The voltage follower circuit utilizes the characteristics of high input impedance and low output impedance for impedance matching. The second-order low-pass filter circuit filters out high-frequency noise signals. The induced voltage from the dual-power precision rectifier circuit is transmitted to the microcontroller. When the induced voltage exceeds a set value, the microcontroller sends a signal to the alarm circuit. This voltage detection device for power transmission and transformation equipment can sensitively react to weak induced voltage inputs and issue warning signals, which can prevent electric shock accidents during high-voltage maintenance. It is also easy to install on grounding rods and grounding wires, and can also be connected to an extension pole for independent voltage detection.

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