A fast protection device for high voltage signal isolation

Abstract

The invention discloses a fast protection device for high voltage signal isolation. The fast protection device comprises a threshold sending module for transmitting a threshold communication signal to an optical fiber level conversion module, the threshold communication signal being converted by the optical fiber level conversion module into a threshold optical signal for transmission in an optical fiber. When transmitted to an ECRH system, the threshold optical signal is converted into the threshold communication signal. The threshold communication signal is decoded by a signal decoding module into a threshold digital signal. The threshold digital signal is converted into a threshold analog signal by a digital-analog conversion module. A protection signal and the threshold analog signal are compared through a voltage comparison module to output a fault judgment signal. An electro-optical conversion module judges whether to output an optical beam or not based on the fault judgment signal so as to decide whether a control system cuts off the power supply to the ECRH system or not. With the optical fiber level conversion module and the electro-optical conversion module, the ECRH system can be isolated from the threshold sending module and the control system to protect both, and the thresholds of multiple protection signals can be fast, securely and accurately changed online.

Description

technical field [0001] The invention relates to the fields of high-voltage isolation and remote communication, and more particularly, to a fast protection device for high-voltage signal isolation. Background technique [0002] The electron cyclotron resonance heating (ECRH) system is an important auxiliary heating method for magnetic confinement nuclear fusion devices. It has a significant effect on plasma local heating and current drive, and can improve the operation of magnetic confinement nuclear fusion devices. Parameters are beneficial to the experimental research of magnetic confinement nuclear fusion physics. The working voltage of ECRH is up to 80kV, and it is powered by two main high-voltage power supplies. Once the main high-voltage power supply fails, it will cause great damage to the entire ECRH system. The main high-voltage power supply supplies power to the gyrotron, the core component of ECRH. It will cause damage to the gyrotron. The gyrotron is an extremely...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of insufficient isolation of traditional manual adjustment, low adjustment accuracy, cumbersome operation and low safety factor, and provide a fast protection device for high-voltage signal isolation

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