输电线路激励融冰的阻波方法研究  

Research on Wave-Trapping Method for Incentive De-icing of Power Transmission Lines

作　　者：刘让姣 周羽生[1] 安正洲 彭湃[1] 高云龙[1] 熊杰[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410004

出　　处：《南方电网技术》2014年第2期88-91,共4页Southern Power System Technology

基　　金：湖南省高校创新平台开放基金项目(09K066);电力与交通安全监控及节能技术教育部工程研究中心基金资助项目~~

摘　　要：高频高压激励融冰是一种实现输电线路在线不停电融冰的方法,然而在输电线路应用高频高压融冰的技术中,既产生激励融冰的高次谐波,又由于激励源内部的电力电子元件产生大量的低次谐波会降低电能质量。对此,针对一种18 kV/40 kHz高频高压激励融冰方法设计一套线路阻波方法,在输电线路两端串联接入高频阻波器,采用单频阻波器原理将40 kHz的高频信号限制在高频融冰通道内;对于激励源产生的低次谐波则利用并联有源电力滤波器,确保电能传输质量。仿真结果验证了该高频融冰线路阻波方法的可行性。High frequency high voltage excitation de-icing is a kind of methods of realizing the transmission line on-line power de-icing,using this de-icing technology on transmission line,the excitation device produces both a higher fequency harmonic wave for deicing and a low harmonic waves because of the internal excitation power electronics. This paper designs a set of line resistance wave method for 18 kV /40 kHz high-frequency high-voltage de-icing technology,the high-frequency wave traps access at the transmission line ends,using the principle of single frequency allowing only 40 kHz high frequency signal through in the line of de-icing to ensure the high frequency de-icing. The active power filter is used to suppress the low-order harmonics because of the internal excitation power electronics to ensure the quality of power transmission. By simulation,the correctness of preventing wave method for high-frequency high-voltage de-ice lines was verified.

关 键 词：高频激励 高频阻波器 低次谐波 有源电力滤波器 谐波抑制 

分 类 号：TM726[电气工程—电力系统及自动化]