Transient process detection method, apparatus and system for railway power system

A transient process and power system technology, applied in the power field, can solve the problems of weak anti-interference ability and misjudgment of singular points, and achieve the effect of reducing hardware cost and data processing difficulty

Inactive Publication Date: 2018-07-27
CHINA SHENHUA ENERGY CO LTD +1
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Problems solved by technology

[0005] Based on the above problems, the present invention proposes a transient process detection method, device and system of a railway power system, which solves the problem that the anti-interference ability of the singular point in the prior art is not strong, that is, the singular point of the waveform, the peak glitch, etc. Misjudged as a technical problem of a transient process

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  • Transient process detection method, apparatus and system for railway power system
  • Transient process detection method, apparatus and system for railway power system
  • Transient process detection method, apparatus and system for railway power system

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[0034] The present invention will be further described in detail below in conjunction with specific embodiments and drawings. It is only intended to elaborate on the specific embodiments of the present invention, and does not impose any restriction on the present invention. The protection scope of the present invention is subject to the claims.

[0035] Reference figure 1 , The present invention proposes a method for detecting transient process of railway power system, including:

[0036] Step S001, sampling the current waveform in the latest preset time period to calculate the intensity change of the current;

[0037] Step S002, if the intensity change is greater than the first preset threshold, the transient process of judging the current waveform starts, the transient waveform is recorded separately, and the transient end judging algorithm is triggered;

[0038] In step S003, the transient end determination algorithm starts to calculate the intensity change of the current, and if t...

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Abstract

The invention provides a transient process detection method, apparatus and system for a railway power system. The method comprises the steps of sampling a current waveform in a recent preset time period, and calculating an intensity change quantity of a current; if the intensity change quantity is greater than a first preset threshold, judging that a transient process of the current waveform begins, separately recording a transient waveform, and triggering a transient completion judgment algorithm; starting to calculate the intensity change quantity of the current by the transient completion judgment algorithm, and if the intensity change quantity in a preset number of continuous cycles is smaller than a second preset threshold, judging that the transient process is ended, and stopping recording the transient waveform separately; and outputting the recorded transient waveform. The technical problem that the anti-interference capability of singular points is poor, namely, the singular points, spikes or glitches and the like of the waveform are easily mistaken for the transient process in the prior art is solved.

Description

Technical field [0001] The invention relates to the field of electric power, and in particular to a method, device and system for detecting a transient process of a railway electric power system. Background technique [0002] The shock transient state of freight railway power system is the transition process of the system from one steady state to another steady state. There are many reasons for the transient process, mainly including moving load passing, failure, load switching, and change of operating state. The detection of transient process means that when a transient process occurs in the system, it can detect the occurrence of the transient process and record the transient waveform; [0003] At present, the commonly used transient process detection methods include edge detection and sliding window detection. The existing detection methods are not strong against singular points, that is, it is easy to misjudge the singular points and spikes of the waveform as transient process...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0631G06Q50/06
Inventor 杜振军王宏宇王立新张继雄徐斌
Owner CHINA SHENHUA ENERGY CO LTD
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