Being the first BTB project in China, The LingBao BTB HVDC project, two sets of DC control system are configured, which are designed by NR and XJ.

• 灵宝背靠背直流输电工程作为直流输电设备国产化的依托工程、试验工程,其控制系统采用两套控制系统分时运行的方案,南瑞公司、许继公司各提供一套独立的控制系统。