Parallel connection method and parallel connection device for multiple local discharge signals
A technology of discharge signal and partial discharge, applied in testing circuits, electrical components, testing dielectric strength, etc., can solve the problems of signal energy attenuation, signal loss, and the inability of switching circuits to achieve signal self-triggered closing and shut-off, to improve the The effect of safe operation of equipment and avoidance of loss
Active Publication Date: 2014-04-02
SHANGHAI JIAO TONG UNIV
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The invention discloses a parallel connection method and a parallel connection device for multiple local discharge signals. The parallel connection method comprises the following steps: receiving signals input by multiple local discharge sensors, and preprocessing the local discharge sensors to obtain amplifying signals; isolating on the amplifying signals to enable the signals to be unidirectionally transmitted in a self-triggering manner, and finally, outputting all the isolated signals, wherein the delay transmission of ultrahigh-frequency local discharge signals is realized by adopting a surface acoustic wave delay line set. According to the parallel connection method and the parallel connection device disclosed by the invention, by amplifying and isolating the multiple signals, the signals can be unidirectionally transmitted in a self-triggering manner and isolated, further, the non-interfering parallel connection of the multiple local discharge signals is realized, and the signal loss during a signal transmission process is further avoided. Meanwhile, the local discharge detection signals connected in parallel are sent to a signal bus, and the multiple signals are monitored simultaneously by a data acquisition unit, and therefore, the goal that data acquisition is performed through the same set of data acquisition units is achieved, and the cost is reduced.
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