extra/ultra-high voltage DC transmission converter valve light triggering thyristor level detection device

A UHV DC and thyristor-level technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of time-consuming, labor-intensive, and affecting efficiency, and achieve the effects of convenient operation, simple structure, and accurate data recording
CN105823950AActive Publication Date: 2016-08-03CHINA XD ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA XD ELECTRIC CO LTD
Publication Date
2016-08-03

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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.
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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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