COMPARISON BETWEEN AC AND DC SHORT-CIRCUIT-CURRENT ICE-MELTING METHODS

摘要：

This paper analyses and compares between AC and DC Short-circuit-current Ice-melting methods (SCCIM) in terms of heating effect, ice-melting time, critical ice-melting current and power capacity. The icemelting time and critical ice-melting current of AC and DC SCCIM are tested by experiments in artificial climate chamber, and the results of experiments are basically consistent with the calculation results. Both calculation and experiment show that: The icemelting effect of AC SCCIM is the same as that of DC SCCIM in essence when the effective value of AC is equal to the DC. However, the power capacity of AC ice-melting is much greater than that of DC icemelting because of the line inductance. Under the same conditions, the critical ice-melting current of AC is smaller than that of DC, and the ice-melting time of AC is shorter than that of DC.

作者: Liqing Liang Zhou Yazi Zhang Jiwu Xiao En Zhao Shihua

作者单位: Huaihua Power Bureau of Hunan Electric Power Company, Huaihua 418000, China State Key Laboratory of Power Transmission Equipment & System Security and New Technology College of Electrical Engineering, Chongqing University ,Chongqing, China

会议类型: 国际会议

会议名称: The 14th International Workshop on Atmospheric Icing of Structures(第十四届结构物大气覆冰国际研讨会 IWAIS 2011)

会议地点: 重庆

会议语种:英文

页码: 40

在线出版日期: 2011-05-08（万方平台首次上网日期，不代表论文的发表时间）