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Medium space charge measurement electrode at AC superposition DC voltage based on PEA method

A technology of DC voltage and medium space, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve problems such as inability to measure space charge, and achieve the effect of improving the level

Inactive Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing PEA method measurement device measures the distribution of space charge in the medium under DC voltage, and cannot measure the space charge distribution under AC superimposed DC voltage.

Method used

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  • Medium space charge measurement electrode at AC superposition DC voltage based on PEA method
  • Medium space charge measurement electrode at AC superposition DC voltage based on PEA method
  • Medium space charge measurement electrode at AC superposition DC voltage based on PEA method

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Embodiment Construction

[0035] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Furthermore, it should be understood that development work, while potentially complex and time-consuming, would be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0036]Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution acc...

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Abstract

The invention provides a medium space charge measurement electrode at AC superposition DC voltage based on a PEA method, belongs to the field of high voltage and insulation, and aims to solve a problem of measuring space charge distribution of flat-shaped solid insulation materials at AC superposition DC voltage based on the PEA method. The medium space charge measurement electrode at AC superposition DC voltage based on the PEA method comprises an upper electrode, a lower electrode, an electrode fastener, an AC superposition DC power supply, a nanosecond pulse power supply, a sample and a signal amplifier. The sample is positioned at the center of an upper surface of the lower electrode, the upper electrode is positioned above the sample, the upper electrode is not contacted with the lower electrode, the upper electrode and the lower electrode are fastened through the electrode fastener, the AC superposition DC power supply is electrically connected with the upper electrode, and the signal amplifier is fixed in the lower electrode. The invention is used for measuring space charge distribution of flat-shaped solid insulation materials at AC superposition DC voltage based on the PEA method and is mainly applied to the field of high voltage and insulation.

Description

technical field [0001] The invention relates to a space charge measuring electrode, in particular to a medium space charge measuring electrode under AC superimposed DC voltage based on the PEA method, which belongs to the field of high voltage and insulation. Background technique [0002] With the rapid development of my country's social economy, the increasing demand for electricity in load centers has driven the rapid development of my country's high-voltage and UHV power grid construction. High-voltage direct current transmission has the advantages of fast and flexible power adjustment, no increase in short-circuit capacity of the system, assistance in transient stability of the system, low loss, and less land occupation. has been widely applied. However, DC equipment is also subjected to more severe tests than traditional AC equipment. For example, due to the special operating conditions of the converter transformer, the excitation voltage of the valve side winding is n...

Claims

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Application Information

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IPC IPC(8): G01R29/24
Inventor 高自伟朱学成池明赫陈庆国
Owner STATE GRID CORP OF CHINA
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