首页>
外文会议>
>The use of electric, magnetic and aerodynamic field computations for modelling the behaviour of electric arcs in high voltage interrupters and materials processors
【24h】
The use of electric, magnetic and aerodynamic field computations for modelling the behaviour of electric arcs in high voltage interrupters and materials processors
Field modelling is contributing much to the understanding and design of equipment and devices in which electric arcs occur. The earliest preoccupation was mainly with electrostatic field calculations for ensuring that the circuit breaker geometry was not susceptible to unnecessary insulation failure. However the operation and behaviour of such arc devices depend not only upon E-field conditions but also upon aerodynamic fields used for controlling and extinguishing the electric arcs, thermal fields produced by the electric arc plasma itself, and magnetic fields for providing extra arc column control via electromagnetic drives. This paper attempts to illustrate how research is progressing to incorporate descriptions of these additional fields-aerodynamic, magnetic and thermal-to produce more integrated modelling of equipment involving high current arcs. The need is driven by the closer coupling between the various fields consequent upon the evolution of more efficient and cost effective device designs, one example of which is the SF/sub 6/ puffer circuit breaker wherein the aerodynamic, thermal and electric fields are tightly interactive. The evolution of self pressurising SF/sub 6/ interrupters is leading to a need to also couple external magnetic fields into the multidimensional fields systems in order to enhance the aerodynamic and thermal conditions within such a device.
展开▼
机译：现场建模为理解和设计发生电弧的设备和设备做出了很大的贡献。最早的工作重点是静电场计算，以确保断路器的几何形状不会受到不必要的绝缘故障的影响。然而，这种电弧装置的操作和行为不仅取决于电场条件，还取决于用于控制和熄灭电弧的空气动力学场，由电弧等离子体本身产生的热场以及用于提供额外的电弧柱控制的磁场。通过电磁驱动器。本文试图说明如何进行研究，以结合对空气动力学，磁学和热学这些其他领域的描述，以产生涉及大电流电弧的设备的更完整的集成模型。随着更高效，更具成本效益的设备设计的发展，各个领域之间的紧密耦合驱使了这种需求，其中一个例子是SF / sub 6 /吹风机断路器，其中空气动力，热力和电场是紧密相互作用的。自加压SF / sub 6 /灭弧室的发展导致需要将外部磁场也耦合到多维场系统中，以增强此类设备内的空气动力学和热条件。
展开▼
