一种晶闸管阀的合成试验回路研究

Study on a Synthetic Test Circuit of the Thyristor Valves

现代晶闸管阀的额定容量很高,难以使用传统的背靠背试验回路进行试验,合成试验回路是一种替代方法。设计合成试验回路的核心在于如何正确地再现晶闸管阀上的负荷。笔者介绍了一种新的合成试验回路,正确地再现了运行中施加在HVDC晶闸管阀上的电压和电流负荷。验证试验表明,该回路的设计是成功的。

Modern power thyristor valves have a high power rating and are difficult to be tested in a conventional back-to-back test circuit. A more economical alternative is to use a synthetic circuit. The core to design a synthetic test circuit is to correctly reproduce the stresses applied on the thyristor valves. A new synthetic test circuit is introduced in this paper. This new circuit reproduces the correct stresses applied on the high voltage direct current(HVDC)thyristor valves in service. Verifying tests reveal that the circuit design is a success.