Sf6 Circuit Breaker Operating Mechanisms Are Widely Used In Substation Systems.

The rapid development of the modern power industry has driven continuous innovation in high-voltage switchgear technology. Sulfur hexafluoride (SF6) circuit breakers, with their excellent arc-extinguishing performance and insulation characteristics, have become the mainstream configuration for 110kV and above voltage level transmission and distribution networks. In the operation of the entire set of equipment, sf6 circuit breaker operating mechanism is responsible for executing the opening and closing control, and its reliability is directly related to the safe and stable operation of the power grid.

The sf6 circuit breaker spring mechanism type currently used in substation systems mainly includes three categories: spring energy storage mechanism, hydraulic mechanism and pneumatic mechanism. Spring energy storage mechanisms store mechanical energy through an electric motor or manual operation, releasing energy instantaneously to drive the circuit breaker when opening. They are characterized by their compact structure and simple maintenance, and dominate in voltage levels from 35kV to 220kV. Hydraulic mechanisms utilize high-pressure cylinders to provide powerful operating power, suitable for 500kV and above ultra-high voltage systems, and can meet the high operating power requirements of multi-break structures. Pneumatic mechanisms use compressed air as a power source, have a fast response speed, and are often used in special operating conditions or with imported equipment.