DC Research Center focuses on the technical fields such as HVDC transmission, and MV/LV DC power distribution and supply. It also engages with theoretical research, technical research and engineering construction at the device, equipment and system levels.

Key Technologies：

a）IGCT

* Develop and research new-generation customized IGCT-Plus devices for the DC power grid to respond to the demand for application of the DC circuit breaker HV large-capacity transient interrupting and novel converter.

* Lead the world in multiple performance indicators, significantly reduce costs, and successfully adapt core devices to domestic settings.

IGCT-Plus

b）DC circuit breaker

* First ever hybrid DC circuit breaker, created by combining coupled negative voltage and cross bridge valve group technologies.

* Successfully developed multiple series of 500kV/40kV/10kV/400V DC circuit breakers, and developed the first multi-port DC circuit breaker.

500kV DC breaker

c）DC transformer

* First to develop the switched capacitor DC transformer scheme, which has the technical advantages of surge blocking, short-circuit current breaking, etc.

* Successfully developed 10kV/750V/380V DC transformers, and developed the first MW-class DC transformer single module based on IGCT-Plus.

10kV DC transformer

d）Voltage source converter

* First ever compact MMC scheme, which has outstanding advantages such as high reliability, low cost and high density.

* First to develop the cross-clamp type MMC based on IGCT-Plus and a new type of MMC based on IGCT-Plus devices.

MMC based on IGCT-Plus

e）System-level analysis, design, control and protection

* Mastered the complete design technology, a multi-system and multi-means simulation analysis technology for flexible DC power transmission and distribution system..

* Mastered the compact control and protection technology of the DC power grid.

Control and protection of Nan'ao multi terminal flexible DC project