Direct-current partial discharge testing system and method for extra-high-voltage power transmission and transformation equipment

A technology for power transmission and transformation equipment and partial discharge, which is applied in the direction of testing dielectric strength and can solve problems such as reliability and safety not being guaranteed.

Active Publication Date: 2017-02-15
GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a DC partial discharge test system and method for UHV power transmission and transformation equipment, which is used to

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  • Direct-current partial discharge testing system and method for extra-high-voltage power transmission and transformation equipment
  • Direct-current partial discharge testing system and method for extra-high-voltage power transmission and transformation equipment

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Embodiment Construction

[0017] A DC partial discharge test system for UHV power transmission and transformation equipment, including a DC partial discharge measurement module, a DC high voltage generator module for partial discharge measurement, and a partial discharge-free and partial discharge coupling module for partial discharge measurement. The DC partial discharge The measurement module is electrically connected with the DC high voltage generator module for partial discharge measurement; the DC partial discharge measurement module is electrically connected with the partial discharge-free and partial discharge coupling module for partial discharge measurement.

[0018] The DC partial discharge measurement module includes the following devices: detection impedance, program-controlled amplifier, program-controlled filter, two A / Ds, CPLD chip, FIFO memory chip, industrial computer and display and storage printer, after the partial discharge signal is received by the detection impedance , the program...

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Abstract

The invention discloses a direct-current partial discharge testing system for extra-high-voltage power transmission and transformation equipment. The direct-current partial discharge testing system comprises a direct-current partial discharge measurement module, a direct-current high voltage generator module for partial discharge measurement and a non-partial-discharge and partial-discharge coupling module for partial discharge measurement which are electrically connected. In the system, a hardware pipeline formed by a CPLD chip and an FIFO memory chip runs synchronously at the high speed of A/D sampling, so it is guaranteed that a hardware system is able to read while carrying out high-speed sampling under the condition that main waveform data of partial discharge is retained, thereby realizing long-term continuous storage and analysis of partial discharge data. In addition, a windows platform mass memory is used to cache the partial discharge data read from the FIFO memory chip, so as to meet the need of follow-up processing.

Description

technical field [0001] The present invention relates to the technical field of discharge test systems, and more specifically relates to a DC partial discharge test system and method for UHV power transmission and transformation equipment. Background technique [0002] With the development of UHVDC engineering construction, the insulation structure of the converter becomes more and more complex. According to the standards of GB7354-2003, IEC60076 and IEC60270, the converter converters have been subjected to corresponding insulation tests and assessments in the manufacturing plant, but after the converter converters have been transported and installed on site, there is no assessment method in the converter station, and currently only DC can be used. Leakage current test, and this kind of test is a macroscopic assessment, the insulation condition of the converter valve side cannot be truly reflected, so its reliability and safety cannot be guaranteed. [0003] Partial discharg...

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 吕刚杨立唐华东陈亮彭秀葵代志强叶明李毅谢晨煜余忠田时云洪蒋泽袁国海赵健王恒路亚邱明亮单华平
Owner GUIYANG BUREAU OF CHINA SOUTHERN POWER GRID CO LTD EHV TRANSMISSION CO
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