Optimization design on step-shape cushioning for hydraulic operating mechanism of high voltage circuit breakers

Gao, Qingqing; Wang, Xiaohua; Rong, Mingzhe; Fu, Yuwei; Xi, Li

doi:10.1109/cmd.2016.7757831

Cited by 1 publication

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship between the temperature coefficient η of the elastic modulus and the linear expansion coefficient α is shown in formula (3).…”

Section: Theoretical Calculationmentioning

confidence: 99%

“…Currently, many studies have been carried out on circuit breakers with oil dashpot. In [1][2][3][4][5][6][7], the virtual prototype technology is used to comprehensively analyze the product performance. In [3][4][5], the influence of the structure of the circuit breaker and the operating mechanism on its performance is analyzed, and the operating performance of the circuit breaker is improved by optimizing the design of these structural.…”

Section: Introductionmentioning

confidence: 99%

“…In [1][2][3][4][5][6][7], the virtual prototype technology is used to comprehensively analyze the product performance. In [3][4][5], the influence of the structure of the circuit breaker and the operating mechanism on its performance is analyzed, and the operating performance of the circuit breaker is improved by optimizing the design of these structural. In [6,7], the influence of electromagnetic force, oil damping force, spring force and other factors on the iron core is analyzed, and the expected operation time is obtained by controlling each influencing factor.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of parameter changes on the operation characteristics of circuit breaker with oil dashpot at low temperature

Jia

Shi³

et al. 2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

The iron core in the circuit breaker of oil dashpot is mainly affected by the electromagnetic force, spring force and oil damping force, which can play the function of anti-time protection when overload current is excited. At low temperature, the viscosity of the methyl silicone oil damping fluid will change, and the parameters of spring and iron core will also change with temperature. The change of these parameters will lead to the change of the resultant force on the iron core, which will affect the operation time. To analyze this problem, a correlation model is established. Through the measurement of parameters at low temperature, numerical calculation, electromagnetic analysis, simulation analysis and compared with the experimental results, the study found that the viscosity of the damping fluid increases, the iron core is deformed, and the spring stiffness increases at low temperature. The influence of a single factor on the operation characteristics of the tripper is not enough to reflect its overall characteristics, and the comprehensive effect of each factor needs to be considered. After comprehensively considering all factors, the results are closer to the experimental results. The results provide a theoretical basis for the optimization design of the circuit breaker.

show abstract

“…The relationship between the temperature coefficient η of the elastic modulus and the linear expansion coefficient α is shown in formula (3).…”

Section: Theoretical Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of parameter changes on the operation characteristics of circuit breaker with oil dashpot at low temperature

Jia

Shi³

et al. 2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

Optimization design on step-shape cushioning for hydraulic operating mechanism of high voltage circuit breakers

Cited by 1 publication

References 5 publications

Influence of parameter changes on the operation characteristics of circuit breaker with oil dashpot at low temperature

Influence of parameter changes on the operation characteristics of circuit breaker with oil dashpot at low temperature

Contact Info

Product

Resources

About