阀基电子设备是连接换流阀与直流控制保护设备的接口设备，它是实现对换流阀进行控制和保护的重要环节。宁东—山东±660 kV直流输电工程的直流控制保护系统和换流阀由不同设备厂家供货。为了对直流控制保护系统和换流阀接口的功能及性能进行检验，专门开展了闭环实时仿真试验工作。对试验的整体情况进行了介绍，并对试验中的关键技术问题进行了阐述，提出了解决办法及验证结果。直流控制保护系统和换流阀阀基电子设备闭环试验对保证工程现场系统试验的顺利进行以及按期投运起到了重要作用。

Valve base electronics, connecting thyristor valve and DC control & protection equipment, is of importance to control and protect the thyristor valve. In the ±660 kV HVDC power transmission project, the thyristor valve and the control & protection system are supplied by different providers. In order to verify functions and performance of the interface between thyristor valve and control & protection equipment, the real-time close-loop simulation tests are carried out, where the overall situation is presented, the key technical problems and countermeasures are discussed, and the verification results are proposed. Close-loop tests of thyristor valve base electronics and control & protection system lay down solid foundation for on-site commissioning and successfully putting into operation of the project.