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Transmission line fault probability assessment method based on historical fault information

A technology of transmission lines and historical faults, applied in data processing applications, instruments, calculations, etc., can solve problems such as difficult acquisition and application, and achieve the effects of reducing requirements, ensuring accuracy, and ensuring operability

Inactive Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0007] Although the above calculation model is established based on the mechanism of lightning's influence on the line, the shielding rate p required in the model a , arc establishment rate η and other parameters are very difficult to obtain in the actual system
Therefore, the model is accurate, but it is difficult to apply it in practice

Method used

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  • Transmission line fault probability assessment method based on historical fault information
  • Transmission line fault probability assessment method based on historical fault information
  • Transmission line fault probability assessment method based on historical fault information

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with accompanying drawing.

[0053] Such as figure 1 As shown, a transmission line fault probability evaluation method based on historical fault information includes two parts: the analysis of historical fault information of the line and the calculation of the fault probability of the line to be evaluated. 1), the classification of influencing factors is step (2) and the degree of influence of each level of factors based on historical fault information quantification is step (3), and the calculation of the failure probability of the line to be evaluated is step (4). The present invention uses the system Analyze and deeply excavate the historical fault information of the line, find out the quantitative means of the influence degree of each factor of the line fault, and then comprehensively evaluate the fault probability in combination with the operating conditions of the line to be evaluated. The detail...

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Abstract

The invention discloses a transmission line fault probability assessment method based on historical fault information. According to the method, through system analysis, the line historical fault information is deeply mined, a quantitative method of the influence degree of each factor of line faults is found out, and the fault probability is integrally computed according to the quantitative method and the operation conditions of a to-be-assessed line. The transmission line fault probability is assessed by using the method, not only can a variety of variable influence factors in the line operation be comprehensively considered to ensure the accuracy of an assessment result, but also the requirements of the method for basic data can be reduced to ensure the operability of the method in practical application. According to the transmission line fault probability assessment method based on the historical fault information, the problem that conflict between the accuracy of the assessment result and the operability of an existing assessment method exists in the existing transmission line fault probability assessment method is solved, and the transmission line fault probability assessment method based on the historical fault information is worth of being popularized.

Description

technical field [0001] The invention belongs to the field of failure probability assessment of transmission lines, and in particular relates to a transmission line failure probability assessment method based on historical failure information. Background technique [0002] With the increase of the scale of the power grid, the number of transmission lines in the system also increases, so the maintenance workload of the lines in the system is also increasing. Therefore, how to properly arrange the maintenance of the transmission lines in the network according to the operation of the system It is an increasingly urgent issue in the actual production of power grids to reduce the maintenance workload of transmission lines to the greatest extent without affecting the safe operation of the system. In fact, the key to solving the above problems lies in how to effectively evaluate the current operating status of many lines in the system and accurately estimate the failure probability ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 朱星阳李波王骏沈永东
Owner STATE GRID CORP OF CHINA
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