Lingbao back-to-back (BTB) HVDC project interconnecting Northwest China Power Gird with Central China Power Gird is a pilot project of localization of HVDC manufactures in China.

• 灵宝背靠背直流联网输电工程是我国直流输电国产化的示范工程，该工程的系统调试是第一次依靠国内技术力量调试全部国产化设备。