Tension spring isolating switch of surge generator charging resistor

Abstract

The invention discloses a tension spring isolating switch of a surge generator charging resistor, and the switch is a multi-level linked on / off automatic switch. In charge, a charge resistor is input, and a capacitor is in parallel connection for charging; in discharge, the charge resistor is switched off, and the capacitor is in series connection for discharging; and an insulation rod with integral tension prestress is adopted to operate a tension spring on / off switch device so as to work together with an electrode adjustment sleeve to realize the synchronous action of multi-level mechanical switch units, and the serial and parallel isolation of the charge resistor is realized by utilizing an conducting spring with high spring index. A motion mechanism moves up and down in a vertical direction only by virtue of the isolation rod, a prestress regulating device and tension and position regulating units are beneficial to the improvement of transmission accuracy, the synchronous error is not greater than 0.02mm, and problems of the traditional series and parallel switch of an extra-high voltage surge generator charging resistor, such as complex operation mechanism, large occupied space, poor charge-discharge synchronous performance of multi levels of capacitor and the like, are solved.

Description

technical field [0001] The invention relates to a spring-type isolating switch for charging resistance of an impulse generator, in particular to a method and device for isolating the charging resistance of an impulse voltage generator. The technical field of high-voltage test electrical appliances. Background technique [0002] With the continuous development of UHV power transmission and transformation technology, the shock resistance and discharge test device for the insulation of UHV or UHV power transmission and transformation equipment needs to generate an operating impulse voltage waveform with a wave front time of 2500μs. The traditional test device circuit Due to technical reasons, the efficiency is very low when generating long wave front operation impulse voltage (traditional impulse generator, lightning wave efficiency is more than 90%, standard operation 250μs wave front time efficiency is more than 70%, wave front time 1000μs operation impact efficiency is about...

AI Technical Summary

Problems solved by technology

Chinese invention patent "A Charging Switch for Impulse Voltage Generator" (application number: 200910060565.8, application date: 2009-01-19) is an operating device that uses a rack and pinion push rod to rotate electrodes for series-parallel conversion, and the switch is a space rotary type , driven by a hydraulic cylinder, one of the dynamic and static contacts is spherical, and the other is a concave spring body. The opening and closing of the switch is realized through the rack and pinion transmission mode. Compressive stress will be generated at the butt joint, but this compressive stress will lead to instability in the connection process of the switch, affecting the charging and discharging performance of the multi-stage capacitor, and the overall structure is more complicated. On the other hand, the physical space occupied by the switch is large, which is not conducive to ensuring high voltage. safe distance

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