Service test method of minimum trigger angle of DC converter valve with asymmetric voltage

A DC converter valve, voltage asymmetry technology, applied in circuit breaker testing, single semiconductor device testing and other directions, can solve problems such as the inapplicability of devices and methods, and achieve a wide range of test products, high test equivalence, adjustment flexible effects

Active Publication Date: 2010-07-14
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the operation tests of high voltage parameters such as the maximum continuous operation load test and the maximum transient operation test, the device and method described in this patent application cannot be applied

Method used

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  • Service test method of minimum trigger angle of DC converter valve with asymmetric voltage
  • Service test method of minimum trigger angle of DC converter valve with asymmetric voltage
  • Service test method of minimum trigger angle of DC converter valve with asymmetric voltage

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Embodiment Construction

[0024] The following is a preferred embodiment of the present invention, and the technical solutions realized by the present invention will be further described below in conjunction with the accompanying drawings.

[0025] The principle block diagram of the low-voltage parameter test device for the DC converter valve is shown in figure 1 . It mainly includes 6 pulsation back-to-back low-voltage high-current sources, high-voltage low-current loop, auxiliary valve V1 and test valve VT.

[0026] The high-voltage and small current source provides the forward trigger voltage required by the sample and the reverse recovery voltage after the sample is turned off, as well as the voltage jump and the forward voltage rise rate during the blocking period of the sample valve, which can accurately evaluate the valve selection of the sample. The correctness of circuit design can be achieved, and at the same time, the current change rate before the test valve is turned off is adjusted by ad...

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Abstract

The invention provides a service test method of minimum trigger angle of DC converter valve with asymmetric voltage, belonging to the field of power electronics and electric power system simulated test. The invention causes test object voltage to rise to the needed value by triggering an auxiliary valve in proper time within the period of voltage source charging, test object voltage wave shape isapproximate to the practical working condition; DC heavy current is provided by six pulsation rectifier bridges, and the wave shape is almost the same with the practical working condition.

Description

technical field [0001] The invention relates to the field of power electronics and power system simulation experiments, in particular to a DC converter valve test method, in particular to a voltage asymmetric DC converter valve minimum trigger angle operation test method. Background technique [0002] Compared with AC transmission, DC transmission has incomparable advantages in long-distance large-capacity transmission, asynchronous networking, and submarine cable power transmission. As the core and key equipment of DC transmission, DC converter valves ensure its safe, reliable and stable operation. , not only the requirements of the system for the device, but also the requirement of the device to protect itself. The operation test is an important means to test the performance of the valve. At present, due to the increase of the voltage and current capability of a single thyristor, the operation test of the DC converter valve using the synthetic test method has been recogni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R31/26
Inventor 高冲温家良张新刚查鲲鹏
Owner CHINA ELECTRIC POWER RES INST
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