Terminal partial discharge monitoring method based on high-frequency electric field change and system thereof
A high-frequency electric field and terminal station technology, applied in electrostatic field measurement, measurement of electrical variables, measurement of electricity, etc., can solve problems such as inability to accurately determine the location of partial discharge points, easy mutual interference in transmission, and difficult cable operation investigation, etc., to achieve early warning The effect is good, the inspection scope is reduced, and the collection accuracy is improved
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[0043] The present invention will be further described in detail below in conjunction with the examples.
[0044] Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The materials or equipment used are not indicated by the manufacturer, and they are all conventional products that can be obtained through purchase.
[0045] The electric field distribution of a normal cable terminal is as follows: figure 1 As shown, because of the cable shielding layer, there is no electric field leakage in the cable body, and the electric field lines are evenly distributed from the lower end of the stress cone to the high voltage side.
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