晶闸管换流阀作为直流输电系统的核心设备之一，完备的型式试验是保证其安全、可靠、稳定运行的重要手段，也是其研究开发和工程应用的基础和前提条件。对宁东—山东±660 kV直流输电示范工程换流阀运行试验项目和实际试验参数进行全面介绍，阐述了换流阀合成试验方法，并展示了部分试验波形。试验结果表明该工程换流阀顺利通过试验考核，设计合理。

Thyristor valve is one of the most important devices within high voltage direct current(HVDC) transmission system, therefore as the foundation and precondition for the research and development as well as engineering application of the valves, complete type test should be carried out to ensure the safe, reliable and stable operation. The items and parameters of the valve operational test for Ningdong-Shandong ±660 kV HVDC transmission project are introduced in detail. Furthermore, the synthetic test method employed and test waveforms are illustrated. It is shown from the test results that the valve design for the project is appropriate and can meet the specified test requirements.