Novel method for triggering thyristor for converter valve module test

A converter valve module and thyristor technology, which is applied in the direction of output power conversion device, single semiconductor device test, measurement device, etc., can solve the problems that the converter valve module cannot be used as a trigger technology and increase complexity, etc., so as to achieve the authenticity and reliability of the test , the effect of preventing interference
CN102013793AActive Publication Date: 2011-04-13CHINA ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHINA ELECTRIC POWER RES INST
Publication Date
2011-04-13

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Abstract

The invention relates to the field of power system devices, in particular to a novel method for triggering thyristor for converter valve module test. The triggering method adopts a digital triggering technology, and VBE (Valve-Based Equipment) receives a synchronous signal and can generate a triggering coded pulse with any phase angle which can be conveniently and flexibly adjusted according to the synchronous signal. The reliable triggering of a thyristor under a low voltage is a basis for ensuring the normal and reliable operation of a converter valve and needs two conditions: (1) the voltage difference between the anode and the cathode of the thyristor is a positive voltage, and (2) the thyristor can be triggered and conducted only when the triggering pulse is received. The triggering pulse for reliably triggering the thyristor under a low voltage is provided by TE (Thyristor Electronics), a low-voltage circuit provides the TE with energy for normal work, the TE receives and decodes the triggering coded pulse from the VBE and then provides a voltage and a current to trigger and conduct the thyristor through a power amplifier so as to trigger and conduct the thyristor.
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Description

technical field

[0001] The invention relates to the field of power system devices, in particular to a thyristor triggering method for a novel converter valve module test. Background technique

[0002] The thyristor is the most important component of the converter valve. Its reliability trigger is the key to ensure the normal operation of the converter valve. During the normal operation of the converter valve, it will be subject to various disturbances from the outside world. The trigger circuit of the thyristor is affected, so that the thyristor cannot be triggered normally. The DC transmission converter valve is composed of multiple sets of thyristors in series. If one thyristor cannot be normally triggered and turned on, the voltage will be shared among the remaining series thyristors, which will cause overvoltage of these thyristors. In severe cases, it may cause damage to the thyristors. , it can be seen that it is particularly important to trigger the thyristor normall...

Claims

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