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Space charge density measuring apparatus

A technology of space charge and charge, applied in the field of measurement system, to achieve the effect of low requirements, convenient maintenance and good adsorption effect

Active Publication Date: 2017-02-22
CHINA ELECTRIC POWER RES INST +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing instruments are mainly based on the ion counting method to measure the negative ion density in the air, and rarely involve the measurement of the charge density in the DC transmission environment

Method used

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Embodiment Construction

[0035] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0036] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention designs a space charge density measuring apparatus. The invention combines the advantages of an ion counting method and a charge screening method, and can realize the accurate measurement of the charge density in the wide particle size range under the condition that the parameters of the measuring device are low in requirement and the size is small. The apparatus comprises a shielding layer, an insulating layer, an ion counting method sensor, a charge screening method sensor, a flowmeter, an ion counting method bias power supply, a negative ion weak current measurement module, a positive ion weak current measurement module, a charge measurement module, a measurement result processing module and a gas intake device.

Description

technical field [0001] The present invention relates to the field of measurement systems, and more particularly, to a space charge density measurement device Background technique [0002] The synthetic electric field under the DC transmission line is an important parameter of the electromagnetic environment of the DC transmission line. The electric field formed by the ions generated by the corona of the DC transmission line is a part of the synthetic field strength and has a great influence on the synthetic field strength value. In order to study the relationship between the space charge density in my country's special environment and the ground synthetic electric field, it is necessary to measure the charge density in space distribution. The current charge density measurement methods mainly include ion counting method, charge screening method, Faraday cage method and so on. Among them, the ion counting method can capture charged particles with small particle size and high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 鞠勇袁海文谢莉张月魁陆家榆于辉杰杨晓洪廖敏鹏吕建勋
Owner CHINA ELECTRIC POWER RES INST
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