Cable partial discharge detecting device selection method and device thereof
A detection device and cable partial discharge technology, which is applied in the field of cable partial discharge detection device selection, can solve the problems of unclear performance index screening methods and inaccurate selection results, etc.
Inactive Publication Date: 2018-12-04
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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[0003] In the process of implementation, the inventors found that there are at least the following problems in the traditional technology: At present, there are endless devices for cable partial discharge detection, and there are many types of equipment. In the past, the equipment selection method of cable partial discharge detection devices was relatively general and often relied on Screening is carried out by judging the single performance index of the equipment, the screening method of the performance index of the cable partial discharge detection device is not clear, and the selection result is inaccurate
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[0081] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0082] At present, devices and equipment used for cable partial discharge detection emerge in endlessly, with various models. In the past, the equipment selection method of cable partial discharge detection devices was relatively general, often relying on the screening of a single performance index of monitoring equipment. The device for cable partial discharge detection The method of comprehensive evaluation of performance indicators is not clear. Therefore, the comprehensive evaluation of device performance indicators for cable partial discharge detection needs to establi...
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The invention relates to a cable partial discharge detecting device selection method and a device thereof. The cable partial discharge detecting device selection method comprises the following steps of acquiring the subjective weight of each performance index of a to-be-selected cable partial discharge detecting device by means of an improved analytic hierarchy process; processing a standard datamatrix model which is constructed based on the data information of each performance index by means of an entropy coefficient method, and obtaining the objective weight of each performance index; combining the subjective weight and the objective weight, and obtaining the combined weight of each performance index; and according to the combined weight, acquiring the performance membership grade, which corresponds with each preset quality grade, of the to-be-selected cable partial discharge detecting device by means of an improved membership degree function model, and screening each cable partialdischarge detecting device according to the performance membership degree. The cable partial discharge detecting device can remarkably settle a problem of low accuracy in traditional selection.
Description
technical field [0001] The present application relates to the technical field of power systems, in particular to a method and device for selecting a cable partial discharge detection device. Background technique [0002] With the increasing requirements of industrial production on the continuity and stability of electric energy, and the large-scale application of high-voltage cables in urban power grid construction, the safety of cable operation has become an important issue of concern to grid inspectors. Partial discharge detection is an important method for evaluating the cable insulation state. Through regular partial discharge detection or on-line partial discharge monitoring of cables, potential faults in cable insulation can be found, thereby avoiding safety accidents caused by defective cables running live. [0003] In the process of implementation, the inventors found that there are at least the following problems in the traditional technology: At present, there are ...
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IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 熊俊梁中熙桑成磊黄雪莜杜乐王良刘辉黄杰峰韦文强张国忠伍伟业潘晋明
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD