High-speed signal acquisition based device and method for recording and analyzing locomotive movably grounded fault
A high-speed acquisition and fault recording technology, applied to fault locations, measuring devices, instruments, etc., can solve problems such as inaccurate detection and achieve the effect of improving accuracy and efficiency
Inactive Publication Date: 2012-01-18
PLUKE TECH
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Problems solved by technology
[0012] The technical problem to be solved by the present invention is to provide a locomotive live ground fault record analysis device and method based on high-speed signal collection for the problem of inaccurate detection in the live ground fault detection of the above-mentioned locomotive electrical circuit
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Embodiment Construction
[0043] The invention collects the characteristic signal in the line to be detected, and uses the collected characteristic signal to analyze and diagnose the exact position of live grounding.
[0044] Such as figure 1 As shown, it is a schematic diagram of an embodiment of the locomotive live ground fault recording and analysis device based on high-speed signal acquisition in the present invention. The device includes an excitation signal generation unit 11 , a ground signal detector 12 and a signal analysis unit 13 , wherein the ground signal detector 12 is installed on the line 10 to be tested, and the excitation signal generation unit 11 is connected to the line 10 to be tested.
[0045] The excitation signal generation unit 11 is used to output the characteristic excitation signal to the line 10 to be detected of the locomotive, wherein the characteristic excitation signal is an electrical signal with a constant voltage value (for example, 220V) and a frequency of a set fre...
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The invention relates to a high-speed signal acquisition based device for recording and analyzing locomotive movably grounded faults, which comprises an excitation signal generating unit, a grounded signal detector and a signal analyzing unit, wherein the excitation signal generating unit is used for outputting characteristic excitation signals to a locomotive line to be detected; the grounded signal detector is used for detecting characteristic movably grounded signals on the line to be detected; and the signal analyzing unit is used for carrying out high-speed acquisition and recording for the movably grounded detection signals output by the grounded signal detector, and analyzing and diagnosing whether movably grounded faults of a locomotive electrical apparatus line exist or not by a digital signal analyzing method. The invention also provides a high-speed signal acquisition based method for recording and analyzing the locomotive movably grounded faults. The invention realizes theanalysis and diagnosis of the movably grounded faults in a specific line through recording and analyzing the characteristic movably grounded signals in the line to be detected, thereby rapidly and accurately diagnosing the movably grounded faults of the locomotive electrical apparatus line and the accurate position of a movably grounded fault position, and improving the accuracy and efficiency ofmovably grounded fault diagnosis.
Description
technical field [0001] The invention relates to the field of circuit detection, in particular to a locomotive live grounding fault record analysis device and method based on high-speed signal collection. Background technique [0002] The electrical circuits of railway locomotives include synchronous traction generators, rectifier cabinets, traction motors and connecting lines. Since the traction motor is hung on the beam of the bogie, it is constantly subjected to vibration and impact, and it works in the open air, and is attacked by rain, snow, wind, and sand, which makes the insulation capacity of the traction motor deteriorate, making the electrical circuit of the locomotive live. Risk of grounding (momentary grounding). In addition, as the running speed of railway locomotives continues to increase, the traction load continues to increase, making the phenomenon of live grounding of locomotive electrical circuits more and more frequent. Once the electric circuit of the l...
Claims
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IPC IPC(8): G01R31/02G01R31/08
Inventor 王汝钢
Owner PLUKE TECH