A New Type of DC Voltage Measuring Device

A technology of DC voltage and measuring devices, which is applied in the direction of measuring devices, measuring current/voltage, and only measuring voltage, etc., to achieve the effects of improving stability and anti-pollution ability, optimizing structural design, and reducing internal temperature rise

Active Publication Date: 2020-08-21
SIFANG JIBAO WUHAN SOFTWARE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This gradient is quite different depending on the voltage level and the design structure

Method used

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  • A New Type of DC Voltage Measuring Device
  • A New Type of DC Voltage Measuring Device
  • A New Type of DC Voltage Measuring Device

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Embodiment Construction

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] like figure 1 As shown, the present invention provides a novel DC voltage measuring device, comprising an air chamber sealed and surrounded by an external pressure equalizing ring 1, an upper cover plate 4, a silicon rubber composite insulator 15, and a bottom sealing flange 22, and the air chamber is filled with SF6 gas insulation.

[0021] The outer grading ring 1 includes a top grading ring and a bottom grading ring, which can effectively prevent corona from being generated at the high voltage end, among which, such as Figure 4 As shown, the top equalizing ring is designed with a three-ring structure and the outer contour is circular, which not only ensures a good shielding effect, but also facilitates on-si...

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Abstract

The invention discloses a novel direct-current voltage measuring device. The structural design of the direct-current voltage measuring device is optimized, so that the radial breakdown voltage of themeasuring device is greatly increased, and the temperature exchange of the measuring device only occurs in the designated area. The internal temperature rise of the measuring device is reduced in a reinforced airflow circulation mode, and the internal heat is isolated from transmitting to the outside of a silicon rubber composite insulator. The stability and the dirt resistance of long-term operation of the direct-current measuring device are improved.

Description

technical field [0001] The invention relates to the technical field of direct current voltage measurement, and more specifically, relates to a novel direct current voltage measurement device. Background technique [0002] The State Grid has also planned 16 UHV lines of "eight AC and eight direct", which have been completed and put into operation, the "two AC and three direct" projects are under construction, and the "one AC project" has been approved. Transformation (commutation) capacity reached 330 million kilowatts. At present, the Jalut-Qingzhou UHV DC and Changji-Guquan UHV DC have been approved. In addition, State Grid has also planned 4 transnational lines, and preliminary work is underway. The State Grid predicts that with the acceleration of the follow-up UHV project of "more traffic and eight direct" UHV projects, the investment in new UHV power grids will reach 450 billion yuan before 2020, plus a total investment of 1.5 trillion yuan in power grids at all level...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
CPCG01R19/0084
Inventor 刘伟胡继华刘立斌刘春玉
Owner SIFANG JIBAO WUHAN SOFTWARE CO LTD
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