Research of Hybrid HVDC circuit breaker Protection Technology based on Multiple information

The technical route and application status of HVDC circuit breaker are introduced. This paper studies the operating characteristics of hybrid HVDC circuit breaker, analyzes its operating status and potential risks, and puts forward countermeasures to improve the safety of power grid and equipment. The primary and secondary equipment fusion technology of hybrid HVDC circuit breaker is studied, and the protection level, availability and service life of hybrid HVDC circuit breaker can be improved by using the equipment status information, historical data and power network information. A hybrid DC circuit breaker protection scheme based on multiple information is proposed.