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Conducting current measuring device and method

A technology for conducting current and measuring devices, which is applied in the field of conducting current measuring devices, can solve problems such as uneven electric fields, and achieve the effect of improving the accuracy of current testing

Active Publication Date: 2021-11-30
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual GIS / GIL, the electrodes are all coaxial structures, and the corresponding electric field is a relatively inhomogeneous field.

Method used

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  • Conducting current measuring device and method
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Embodiment Construction

[0030] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.

[0031] Relevant studies have shown that carriers generated by natural ionization and micro-discharge in insulating gas are important sources of surface charge accumulation on insulators. Therefore, the conduction current and optical signals under coaxial electrodes are studied to analyze the carrier flow in insulating gas Generation and transport are of great significance to solve the problem of surface charge accumulation faced by DC devi...

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Abstract

The invention belongs to the technical field of electrical materials, and particularly relates to a conducting current measuring device and method. An electrode structure in an existing measurement scheme is a flat plate structure electrode, and the corresponding electric field uniformity degree is a uniform field. However, the electrodes in the actual GIS / GIL are coaxial structure electrodes, and the corresponding electric field is a relatively non-uniform field. The invention provides a conducting current measuring device which comprises a direct-current high-voltage generating system, a high-air-pressure sealing cavity, a current measuring system and a signal collecting system which are connected in sequence, the high-air-pressure sealing cavity is connected with an air inlet and exhaust system, and the high-air-pressure sealing cavity and a weak light measuring system are connected with the signal collecting system. And a coaxial structure electrode is arranged in the high-air-pressure sealing cavity. A photoelectric combined monitoring means is adopted, conduction current and optical signals of the coaxial structure electrode are measured synchronously, and the test result is not affected by external interference.

Description

technical field [0001] The application belongs to the technical field of electrical materials, and in particular relates to a conduction current measurement device and method. Background technique [0002] Gas insulated switch-gear (GIS) and gas insulated metalen-closed transmission lines (GIL) have the advantages of small footprint, little influence from external interference, and high reliability. Therefore, it has broad application prospects in urban power transmission and distribution systems, long-distance high-voltage power transmission, and offshore wind power access. DC transmission has been widely used because of its small footprint, low loss, and easy grid interconnection. Therefore, DC GIS and GIL have become an important direction for the development of high-voltage electrical equipment. However, compared with AC equipment, pot insulators in DC GIS and GIL face serious surface charge accumulation problems due to the constant DC voltage direction. [0003] The e...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01J1/00
CPCG01R19/0061G01J1/00
Inventor 屠幼萍邵昱铭许豪张轩宁陈庚武绍琮梁延钰王璁李传扬
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)