摘要
为研究用于弹簧操动机构中的排孔式液压缓冲器结构参数对高压断路器分闸特性的影响,文中以排孔式缓冲器工作原理为基础建立了缓冲过程的数学模型,应用MATLAB对数学模型进行仿真求解。仿真所得曲线与试验曲线相吻合,证明了仿真的准确性,并依此为依据,仿真得到缓冲器在不同阻尼孔直径、不同阻尼孔位置、不同活塞与缸体配合间隙以及不同分闸弹簧刚度下对断路器分闸特性的影响,该研究为设计出满足断路器分合特性的缓冲器提供了理论指导。
In order to investigate the influence of structure parameters of multi-orifice hydraulic buffer which used in the spring operating mechanism of high voltage circuit breaker to the opening operation, in this paper, a mathematical model of cushioning process based on buffer working principle is established.Then simulate and solve such mathematical model by MATLAB. First of all, to verify the simulation accuracy, the simulation and experimental curves are compared and analyzed. Then on this basis, through numerical simulation, it is found that the diameter and the spacing interval of damped orifice, the clearance between piston and cylinder block, and the stiffness of trip spring would influence the opening operation of circuit breaker. This study provides the theoretical guidance for designing and optimizing the performance of hydraulic buffer.
出处
《高压电器》
CAS
CSCD
北大核心
2015年第12期120-125,共6页
High Voltage Apparatus
关键词
排孔式液压缓冲器
断路器
分闸特性
仿真
multi-orifice hydraulic buffer
circuit breaker
opening characteristics
simulation
