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A cable insulation and data processing technology, applied in the field of data processing, can solve the problems such as the inability to obtain the trend of monitoring data changes, and achieve the effect of facilitating trend evaluation and reducing signal interference and noise influence
Active Publication Date: 2017-11-10
兖矿能源集团股份有限公司 +1
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Problems solved by technology
At present, although coal mining enterprises can realize real-time online data collection of the operating status of power cables, there is no method for coordinating and trending the monitored data, making it impossible to obtain the changing trend of the monitored data
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Embodiment 1
[0042] Please refer to figure 1 , figure 1 A flow chart of the process of a cable insulation data processing method provided by the present invention, the method includes:
[0043] Step s101: Periodically sample the cable core-to-ground voltage and leakage current, respectively, to obtain m groups of cable core-to-ground voltage and leakage current, and divide them respectively, and obtain the corresponding ground-to-ground impedance θ 1 , θ 2 , θ 3 ,...,θ m , where m is a positive integer;
[0044] It can be understood that, firstly, the sampling period is set, and the cable core-to-ground voltage and leakage current are periodically sampled in real time until m sets of data are obtained, and the collected cable core-to-ground voltage and leakage current are divided and calculated. Then correspondingly get m groups of ground impedance values θ 1 , θ 2 , θ 3 ,...,θ m . The specific value of m here is artificially set by the inspection personnel according to the act...
Embodiment 2
[0056] Please refer to figure 2 , figure 2 A flow chart of the process of another cable insulation data processing method provided by the present invention, the method includes:
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Abstract
The invention discloses a cable insulation data processing method, which includes periodically sampling the cable core-to-ground voltage and leakage current respectively, obtaining m groups of cable core-to-ground voltages and leakage currents, and performing division processing respectively to obtain the corresponding The ground impedance values θ1, θ2, θ3, ..., θm, among which, m is a positive integer; according to the trend processing formula, the ground impedance values θ1, θ2, θ3, ..., θm are subjected to trend processing to obtain the corresponding trend impedance Values θ'1, θ'2, θ'3,..., θ'm, where the trending formula is θ'n=θ'n-1*0.9+θn*0.1, where θ'1=θ1, n is any integer from 2 to m; the waveform conversion of the trended impedance value is performed to obtain the trended impedance waveform diagram, and the signal interference and noise influence of the collected data are reduced through the trending process, so that the inspection personnel can intuitively and effectively Understand the change trend, and facilitate the trend assessment of the insulation degree of power cables. The invention also discloses a cable insulation data processing system.
Description
technical field [0001] The invention relates to the technical field of data processing, in particular to a cable insulation data processing method. Background technique [0002] As a large coal country, our country has many coal mining enterprises. The operation of coal mining enterprises is inseparable from electricity. One of the problems that often occurs in the power system is the insulation aging of power cables. At present, although coal mining enterprises can realize real-time online data collection of the operating status of power cables, there is no method for coordinating and trending the monitored data, making it impossible to obtain the changing trend of the monitoring data. [0003] Therefore, how to effectively trend the power cable monitoring data and obtain the trend data is a problem that those skilled in the art need to solve at present. Contents of the invention [0004] The purpose of the present invention is to provide a cable insulation data processi...
Claims
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