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Power system fault characteristic quantity modeling method based on fault wave-recording data

A fault feature quantity and fault recording technology, applied in the field of power systems, can solve problems such as the limitation of signal access of fault recording devices, lack of solutions, and deep-seated analysis obstacles

Pending Publication Date: 2018-05-01
海南电网有限责任公司
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Problems solved by technology

However, in practical applications, the signal access volume of the fault recording device is limited. Generally, each substation will be equipped with multiple fault recording devices.
In this way, the actual power grid operation information is scattered and recorded in different wave recording data files
However, the fault recording data is sampled at high speed, and the comprehensive analysis of the recording data generated by different devices puts forward very high requirements on the clock accuracy, which creates obstacles for in-depth analysis.
[0003] To sum up, in the prior art, the comprehensive analysis of the wave recording data generated by different devices puts forward high requirements on the clock accuracy, and causes obstacles to in-depth analysis, and there is still no effective solution

Method used

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  • Power system fault characteristic quantity modeling method based on fault wave-recording data
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[0045] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0046]It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0047] As introduced in the background technology, in the prior art, fault recording data is sampled at high spee...

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Abstract

The invention provides a power system fault characteristic quantity modeling method based on fault wave-recording data. According to the method, a primary equipment model of a power system is established based on the fault wave-recording data, the primary equipment model is associated with a wave-recording channel in a fault wave-recording file, and a wave-recording analysis model is obtained; thefault wave-recording data in time periods before and after a fault moment is extracted, and fault characteristic quantities of all primary equipment components are calculated; and the wave-recordinganalysis model and the fault characteristic quantities are stored in a database to be used for fault diagnosis and accident analysis. Through the method, the wave-recording data is analyzed from multiple perspectives, digital and quantitative processing is performed on wave-recording sampling information through the characteristic quantities of different dimensions, the fault characteristic quantities of multiple dimensions are obtained, and realization of various advanced applications can be guaranteed; and unstructured wave-recording data is converted into a structured fault characteristic quantity model, so that the operation reliability and rapidity of other advanced applications are improved.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a method for modeling fault characteristic quantities of electric power systems based on fault wave recording data. Background technique [0002] After a power system failure occurs, power system dispatching analysts urgently need to analyze the cause of the failure, resolve the failure, and resume power transmission. Currently known intelligent fault diagnosis systems generally focus on the judgment of fault components and the location of fault locations. However, there is no effective method for diagnosis and analysis of the deep-seated cause analysis of the accident and the assessment of the health status of the primary and secondary equipment. The fault recording data records the high-speed sampling data of the primary and secondary systems when the power system fails, so it can be used for fault analysis and diagnosis. However, in practical applications, the...

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Application Information

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IPC IPC(8): G06F17/50H02H6/00H02J3/00
CPCG06F30/20G06F2111/10H02H6/00H02J3/00H02J2203/20Y02E60/00
Inventor 王孝彬尹波符云郑秋元车仁飞范作程张穆乾
Owner 海南电网有限责任公司
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