Photoconductive High Voltage Live Indication System

Abstract

The invention discloses a light guiding type high-voltage electrification indicating system which comprises an equipotential flasher, a light guiding belt and a display panel. The equipotential flasher comprises a high-voltage polar plate connected with a high-voltage guiding wire, a middle polar plate, a rectifying circuit, a follow-current capacitor, a voltage-regulator tube, a silicon controlled rectifier and an LED lamp. The middle polar plate, the rectifying circuit, the follow-current capacitor, the voltage-regulator tube, the silicon controlled rectifier and the LED lamp are arranged to be a capacitance structure parallel to the high-voltage polar plate. The rectifying circuit is connected with the high-voltage polar plate and the middle polar plate. The output end of the rectifying circuit is connected with the follow-current capacitor which is connected with a control pole of the silicon controlled rectifier through the voltage-regulator tube. The follow-current capacitor, the LED lamp and the silicon controlled rectifier form a loop. Light emitted by the LED lamp is projected to the display panel through the light guiding belt. The middle polar plate and the high-voltage polar plate take electricity through induction. The LED lamp flickers ceaselessly through a follow-up circuit. A manager can directly observe the electrifying situation of the guiding wire on the display panel, the distance between the guiding wire and a monitoring point can be arranged to be long according to needs, and the safety coefficient is high. The light guiding type high-voltage electrification indicating system is suitable for the field of high-voltage light opening cabinet monitoring.

Description

technical field [0001] The invention relates to a monitoring device for a high-voltage lighting cabinet, in particular to a light-conducting high-voltage live indication system. Background technique [0002] The live indication system is generally composed of a live sensor and an indicator. At present, more capacitive live sensors are used. It generally needs to be directly installed on the high-voltage primary circuit, and a weak current signal is obtained through the internal capacitor; there is also a non-contact type. For installation, the electric field induction method is used to obtain the charged signal. The electrical signals obtained by the above two sensors are transmitted to the charged indicator through the cable, and the indicator is displayed and locked, that is, the multi-step conversion of electrical signal-optical signal-electrical signal-optical signal is carried out, and the whole process is easily affected by electromagnetic waves. Environmental interfe...

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