Synchronization device for long air discharge observation

Abstract

The invention discloses a synchronization device for long air discharge observation. The synchronization device comprises an oscilloscope, an electro-optical conversion module, a first photoelectric conversion module, a second photoelectric conversion module, a current measuring module and a high-speed camera. The oscilloscope measures a to-be-tested voltage, outputs a trigger electrical signal according to a preset trigger level, and records transmission time of the trigger electrical signal. The electro-optical conversion module receives the trigger electrical signal outputted by the oscilloscope and converts the trigger electrical signal into a trigger optical signal. The first photoelectric conversion module and the second photoelectric conversion module receive the trigger optical signal, convert the trigger optical signal into a trigger electrical signal and trigger the current measuring module and the high-speed camera respectively. With the provided synchronization detecting device, high-precision synchronous measurement of the voltage, current and image of long air discharging can be realized; the test arrangement is simplified; and the test cost is saved.

Description

technical field [0001] The invention relates to the technical field of long air discharge tests, in particular to a synchronous observation suitable for long air discharges. Background technique [0002] With the improvement of the grid voltage level and the interconnection of large-scale grids, higher requirements are put forward for the safe and stable operation of the grid. The air gap is the main external insulation form of the power grid, and the selection of the insulation distance directly affects the safety performance and project cost of UHV transmission lines. In order to improve the technical economy of transmission lines, it is necessary to fully grasp the discharge characteristics of long air gaps. Observing the voltage, current and image of the discharge process is the basis for studying the characteristics and mechanism of long air gap discharge. The voltage, current and image are measured with different devices. When analyzing the test data, it is first nec...

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Problems solved by technology

[0004] The inventor found in the process of implementing the present invention that there are the following technical problems in the prior art: the high-precision digital pulse generator is expensive, and the long air gap discharge electromagnetic interference is strong, and there is a risk of damaging the digital pulse generator

At the same time, the use of digital pulse generators makes the test layout and wiring more cumbersome, increasing the probability of failure during the test

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