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A light-triggered thyristor-level detection device for ultra-high voltage DC transmission converter valves

A UHV DC, thyristor-level technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems affecting efficiency, time-consuming and labor-intensive, etc., and achieve the effect of convenient operation, simple structure, and high detection efficiency

Active Publication Date: 2018-02-23
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional method needs to measure each component of the thyristor-level unit one by one, which is time-consuming and labor-intensive, and requires manual data recording, which seriously affects the efficiency of routine tests before leaving the factory and on-site maintenance.

Method used

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  • A light-triggered thyristor-level detection device for ultra-high voltage DC transmission converter valves
  • A light-triggered thyristor-level detection device for ultra-high voltage DC transmission converter valves
  • A light-triggered thyristor-level detection device for ultra-high voltage DC transmission converter valves

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Embodiment Construction

[0021] The present disclosure will be further described below with reference to the accompanying drawings. In particular, it is stated that the following description is essentially for the purpose of macroscopic explanation and example illustration, and in no way imposes any limitation on the present disclosure and its application or use. Relative arrangements of components and steps and numerical expressions and numerical values ​​set forth in the embodiments do not limit the scope of the present disclosure unless otherwise specifically stated. Additionally, techniques, methods and devices known to those skilled in the art may not be discussed in detail but are intended to be part of the description where appropriate.

[0022] Such as figure 1 As shown, the light-triggered thyristor-level unit detection device for HVDC converter valves of the present invention includes a power frequency power supply unit, a resistance-capacitance measurement unit, a control unit, an RPU dete...

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Abstract

The invention provides an extra / ultra-high voltage (E / UHV) DC transmission converter valve light triggering thyristor level detection device. The device comprises a power frequency power supply unit, a resistance-capacitance measurement unit, a control unit, an RPU detection unit, a data setting and display unit and a light reception unit, wherein a thyristor level comprises a thyristor, a reverse recovery period protection unit, a thyristor damping loop and a thyristor voltage monitoring unit, the power frequency power supply unit and the resistance-capacitance measurement unit are connected with the thyristor, the RPU detection unit is connected with an RPU, and the light reception unit is connected with the power frequency power supply unit, the control unit and the data setting and display unit through fibers and TVM. Through the device, detection on converter valve light triggering thyristor level triggering, thyristor conduction voltage drop, damping parameters, RPU protection function and TVM board monitoring function is carried out, a problem that item-by-item detection is required during light triggering converter valve thyristor level test or overhaul because of no integrated test equipment is solved, and the device further has advantages of high detection efficiency, accurate data record and strong flexibility.

Description

technical field [0001] The invention relates to a detection device, in particular to a light-triggered thyristor-level detection device for an ultra-high voltage direct current transmission converter valve. Background technique [0002] The core equipment of HVDC transmission projects are HVDC converter valves, converter transformers and HVDC control systems. Light-triggered thyristor converter valves are widely used in HVDC projects due to their unique advantages. The thyristor level is the smallest basic unit , each stage includes a thyristor, a thyristor control unit (thyristor control unit, TCU) and an RC damping voltage equalizing circuit, whose performance directly affects the reliability of the transmission system. In order to ensure the electrical characteristics and functions of the thyristor level, it is necessary to test the thyristor level before the DC transmission project is put into operation and during the maintenance period. However, the traditional method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 苟锐锋行鹏张鹏立张乔根马福禄王家琦叶万超孔德志田帅
Owner CHINA XD ELECTRIC CO LTD
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