Digital twin data feature extraction and data compression method and device for urban rail power supply system
A technology of power supply system and data characteristics, applied in data processing applications, electrical components, instruments, etc., can solve the problems of extended storage and analysis time, increased system computing load, etc., to reduce the number and improve processing efficiency Effect
Pending Publication Date: 2021-06-18
BEIJING JIAOTONG UNIV
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However, if the waveform data of each variable at each time is stored and analyzed, the computing load of the system will be increased, and the time required for storage and analysis will be greatly extended
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[0031] Embodiments of the present invention will be described in detail below, and examples of the embodiments are illustrated in the drawings, in which the same or similar reference numerals are indicated by the same or similar elements or elements having the same or similar functions. The following is exemplary, and is intended to be illustrative of the invention, without explanation of the limitation of the invention.
[0032] In order to facilitate the understanding of the embodiments of the present invention, further explanation will be made in conjunction with the accompanying drawings, and various embodiments are not constituting limits of the embodiments of the present invention.
[0033] Such as figure 1 As shown, data feature extraction and data compression method for digital twins according to the number of urban rail power systems described herein, including:
[0034] Step 1, obtain the actual waveform data and the performance of the collected waveform data and the per...
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The embodiment of the invention provides a digital twin data feature extraction and data compression method and device for an urban rail power supply system. The method comprises the following steps: 1, acquiring actual waveform data acquired by the urban rail power supply system and deduced waveform data, wherein the waveform data comprises alternating current side waveform data and direct current side waveform data; 2, compressing the actual waveform data and the deduced waveform data; 3, analyzing the compressed actual waveform data and the deduced waveform data, and extracting a key feature information value of the actual waveform data and a key feature information value of the deduced waveform data; and 4, judging whether the urban rail power supply system has a fault or not according to a difference value between the actual waveform data and the key feature information value of the deduced waveform data, and generating a judgment result.
Description
Technical field [0001] The present invention relates to the field of traction power supply systems, and more particularly to a data feature extraction and data compression method for digital twins using urban rail power supply systems. Background technique [0002] At present, the traction power supply system is the core part of the urban rail transit system, providing continuous, stable energy supply for train operation, is an important guarantee for the safe and smooth operation of urban rail transit system. In the urban rail transit system, after the high voltage power supply of the primary shift is 110kV, it will reduce it to a medium voltage network of 35 kV. The 35kV communication medium voltage network is the standard voltage level of the country, and the traction power supply system turns its step-down rectification into a DC voltage of 1500V. The voltage current data of the traction power supply system AC and DC side can directly reflect the health and health status of e...
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IPC IPC(8): H03M7/30G06Q50/06
CPCH03M7/30G06Q50/06
Inventor 张钢刘志刚邱瑞昌陈杰于泓
Owner BEIJING JIAOTONG UNIV