LI Honglou, ZHANG Fan, SUN Longyong, et al. Reliability Improvement of Closing Resistor for 550 kV Column Circuit Breaker[J]. High voltageapparatus, 2021, 57(1): 157-164.
LI Honglou, ZHANG Fan, SUN Longyong, et al. Reliability Improvement of Closing Resistor for 550 kV Column Circuit Breaker[J]. High voltageapparatus, 2021, 57(1): 157-164. DOI: 10.13296/j.1001-1609.hva.2021.01.023.
The closing resistor for 550 kV live tank circuit breaker is taken as the study object
the structure and working mechanism of the tripping device-the key device affecting the reliability of the circuit breaker is described
the cause and danger extent of the tripping device
in case of fault
is demonstrated.With the help of modern design methods and finite element simulation
the stress of each part of the tripping device during the working process is analyzed and optimization and improvement measures are proposed based on corresponding simulation calculation result.The safety factor of the product parts has been greatly improved by way of feedback verification of the result after optimization.At the same time
the corresponding test prototype is designed based on the simulation analysis and in accordance with the optimization result.Finally
the reliability and stability are verified by 5 000 times mechanical operation tests and perfect effected is obtained.