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A method for expressing three-dimensional map of wide-area end-screen grounding current

A grounding current and expression method technology, which is applied in the direction of only measuring current, measuring current/voltage, measuring electricity, etc., can solve the problems of unspecific data, not three-dimensional, complex numbers, etc., and achieve the effect of simple drawing

Active Publication Date: 2021-10-08
HANGZHOU XIHU ELECTRONICS INST
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Problems solved by technology

[0003] ①The data is not specific, the figures obtained from the statistics are relatively complicated, and there are many words, and the change of information and the comparison between different groups are not obvious
[0004] ②The graphics are not three-dimensional, and the charts obtained from two-dimensional graphics can only reflect the plane changes, that is, the two data changes, which are not three-dimensional enough

Method used

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  • A method for expressing three-dimensional map of wide-area end-screen grounding current

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the described embodiments are only for understanding of the present invention, and do not limit it in any way.

[0020] Such as figure 1 As shown in , it is displayed as three-phase integrated main transformer high-voltage side A / B / C and medium-voltage side Am / Bm / Cm and CT phase AcT / BcT / CcT wide-area synchronous detection, and record the current value of all monitoring points.

[0021] Step (1): Create a basic three-dimensional chart. The basic chart establishment criteria are as follows:

[0022] Select the corresponding X axis as the time axis t, which is the recording time collected at the same time for all monitoring points. The resolution of the time scale can be set (seconds, minutes, hours, days, months, years), and the time axis can be selected according to actual needs resolution. Such as figure 1 When the time scale resolution is se...

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Abstract

The invention discloses a method for expressing a three-dimensional map of a wide-area end-screen grounding current. The present invention is realized as follows: choose different monitoring points to install sensors, and the monitoring points can choose different monitoring points in the same phase or three-phase wide-area synchronous detection on the same side, obtain and record the current values ​​of all monitoring points at the same time, and use the three-dimensional statistical graph to display the obtained Data, and judge the dielectric loss situation according to the trend of the graph. The interface expression of the present invention is clear at a glance, and it can be intuitively seen that the insulation of a certain observation point has changed. The invention can detect the synchronism of three phases, and can also detect the synchronism of each monitoring point of the same phase.

Description

technical field [0001] The invention belongs to the field of map expression analysis, and in particular relates to a three-dimensional map expression method of a wide-area end-screen grounding current. Background technique [0002] The 110kV main transformer outlet mainly adopts a capacitive bushing, and the end screen of the bushing is an important position for detecting the partial discharge signal of the main transformer, dielectric loss and other parameters. The grounding of the end screen is mainly to prevent the insulation damage of the voltage and current introduced by the end screen to make it electrified, and it has the function of protecting the safety of equipment and operators. The commonly used detection method for the end-screen grounding current is the grounding resistance test, but it has the following disadvantages when analyzing the monitoring data: [0003] ①The data are not specific, the statistics obtained are complex, and there are many words, and the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R31/12
CPCG01R19/0092G01R31/1227
Inventor 叶新林张武波洪亮亮王俊肖
Owner HANGZHOU XIHU ELECTRONICS INST