Multiple functions performed by a single valve can result in added systemprotection and lower cost to the user.
多种性能集成在一个阀门上使得系统得到更多的保护，也降低了用户的成本。
2
The system study, manufacture of main equipment , development of valve control, station control, DC protection, installation and commissioning have all been undertaken by domestic organizations.
该工程系统研究、主设备制造，阀控、站控，直流保护设备研制，安装及调试全部由国内单位承担。
3
The authors present the internal structure and functions of converter valve and its control, cooling and protectionsystem.