Short circuit detection method and short circuit detection circuit for 380V power transformation busbar
A technology for short-circuit detection and substation bus, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc. It can solve problems such as fast detection of substation busbars, save maintenance time, speed up judgment, and reduce labor intensity. Effect
Active Publication Date: 2014-03-26
CHINA TOBACCO GUIZHOU IND
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Problems solved by technology
[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a short-circuit detection method for 380V substation busbars, which is used to solve the problem in the prior art that it is impossible to quickly detect whether there is a short circuit between substation busbars
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[0016] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0017] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, so only the components related to the present invention are shown in the drawings rather than the number, shape and Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be ...
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The invention provides a short circuit detection circuit for a 380V power transformation busbar. The 380V power transformation busbar includes a grounding busbar and three phase voltage power transformation busbars, wherein the three phase voltage power transformation busbars are all connected with a three-phase power cord of a 380V power supply through connecting wires respectively, a testing bulb is arranged on each connecting wire, and the grounding busbar is grounded. When the testing circuit is used for detecting whether a short circuit occurs to the 380V power transformation busbar, a user can judge whether a short circuit occurs to the corresponding power transformation busbar only by observing whether each testing bulb is lightened and how bright the lightened bulb is. The method is simple and practical, and can help the user very quickly judge whether a short circuit occurs to the power transformation busbar during equipment maintenance, so that the equipment failure judgment is quickened, the equipment maintenance time is saved, equipment can be restored within the shortest possible time, the work efficiency is improved, and the labor intensity of the maintenance personnel can also be effectively reduced.
Description
technical field [0001] The invention relates to a line short circuit detection method, in particular to a method for detecting a 380V substation busbar short circuit, and a detection circuit for realizing the detection method. Background technique [0002] A three-phase AC circuit is a circuit powered by a three-phase AC power supply, referred to as a three-phase circuit. A three-phase AC power supply refers to a power supply that can provide three voltages or currents with the same frequency but different phases, and the most commonly used is a three-phase AC generator. The phase difference of each phase voltage of a three-phase alternator is 120°, and the order in which the phase voltages lead or lag between them is called a phase sequence. Three sets of coils are installed on the generator at a certain angle (usually 120 degrees). On the stator, let the rotor rotate at high speed to generate alternating current. Usually, the other poles corresponding to them, a total of ...
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Inventor 成辉杨亚赖盛柏
Owner CHINA TOBACCO GUIZHOU IND