Under the background of the global development of clean energy and the construction of a smart energy Internet

high-voltage switchgear

as one of the key devices

has developed rapidly in terms of intelligence

environmental protection

increasement in voltage levels and capacity. Firstly

this paper comprehensively introduces the overall development of China’s switchgear and the latest research progress of high-voltage switchgear in common key technologies

such as arc extinguishing technology

simulation technology

intelligent technology

environmental protection technology

and process technology. In response to the new challenges faced by the design and manufacturing of high-voltage switchgear

companies at home and abroad have researched and developed the double-acting transmission system and the self-energizing arc extinguishing chamber structure

breaking through the multi-physics coupling simulation technology of switchgear breaking

temperature rise

etc. In addition

they have researched and manufactured intelligent high-voltage switchgear

environmental-friendly switchgear using SF6 mixed gas which has been applied in engineering

new insulating materials

near-net shape processing and other process technologies. The development trend of high-voltage switchgear technology mainly lies in the aspects of environmental protection

large-capacity breaking

high-speed breaking

metal-enclosed direct current switch

and new generation of smart switch. The development of high-voltage switchgear will also make the power grid safer

smarter

and greener.