Title :
Imaging and spectrum diagnostics of air arc plasma characteristics
Author :
Li, Xingwen ; Chen, Degui ; Liu, Hongwu ; Chen, Yong ; Li, Zhipeng
Author_Institution :
Sch. of Electr. Eng., Xi´´an Jiaotong Univ., China
Abstract :
This paper is devoted to the study of the air arc plasma characteristics and consists of two parts. An optical high-speed imaging system is integrated with pressure sensing, arc current, and voltage measurement to investigate high-speed and high-temperature unsteady arc plasma motion in a molded case circuit breaker (MCCB) model, especially with the influence of polyoxymethylene (POM), polycarbonate (PBT), nylon, and ceramic arc chamber wall materials. It demonstrates that the performance can be improved effectively by adopting POM and nylon gassing materials. Also, spectrum diagnostics is introduced to analyze the influence of polymethylmethacrylate (PMMA) gassing material on the temperature of arc in a simple model. It shows that material added adjacent to cathode is more effective to cool the arc, compared with the case of anode.
Keywords :
arcs (electric); circuit breakers; electric current measurement; plasma diagnostics; plasma instability; plasma temperature; plasma-wall interactions; polymers; pressure sensors; voltage measurement; anode; arc chamber wall materials; arc current measurement; arc voltage measurement; cathode; ceramic; gassing materials; high-temperature unsteady arc plasma; molded case circuit breaker; nylon; optical high-speed imaging diagnostics; polycarbonate; polymethylmethacrylate; polyoxymethylene; pressure sensing; spectrum diagnostics; Circuit breakers; High speed optical techniques; Integrated optics; Optical imaging; Optical sensors; Plasma diagnostics; Plasma materials processing; Plasma measurements; Plasma properties; Voltage measurement; Arcing; circuit breaker; gassing materials; measurement; spectroscopy;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2004.838591
