基于高频激励法的输电线路融冰激励源研究  

Research on Transmission Line De-icing Source Based on the Method of High-frequency Excitation

作　　者：荆群伟 周羽生[1] 罗屿[1,2] 刘亮[1] 

机构地区：[1]长沙理工大学智能电网运行与控制湖南省重点实验室,湖南长沙410114 [2]国网输变电设备防冰减灾技术重点实验室,湖南长沙410007

出　　处：《电力科学与工程》2015年第10期11-15,共5页Electric Power Science and Engineering

基　　金：国家自然科学基金(51407013);湖南省高等学校创新平台基金资助项目(14K001)

摘　　要：针对当前输电线路融冰技术的缺陷,国外有学者提出了一种在线高频激励融冰方法。此方法具有可实现在线融冰、融冰电流小和融冰效率高等优点,但成套融冰设备未得到深入研究。为推进此融冰方法在输电线路中的实际应用,提出一种针对500 kV交流输电线路的移动式高频融冰激励源设计方案,重点分析并计算了移相变压器与功率单元相关参数,并运用MATLAB对级联式高频激励源进行仿真。结果表明,此方案可行且具有谐波含量低、输出电压稳定等优势。Considering the current defects of transmission line melting ice technologies, some foreign scholars have proposed a new online high-frequency excitation method of melting ice which has the advantages of online deicing,small deicing current and high deicing efficiency; but the complete sets of equipment for deicing still need more research. To promote the practical application of this method in the power system, this paper proposes a portable high-frequency excitation design program used in 500 kV transmission line, and focuses on the analysis and calculation of the phase-shifting transformers and power unit parameters. Then cascaded high-frequency excitation is simulated with MATLAB. The results show that this scheme is feasible and has many advantages such as low harmonic contents and stable output voltage.

关 键 词：高频激励融冰 高频融冰激励源 移相变压器 功率单元 MATLAB 

分 类 号：TM731[电气工程—电力系统及自动化]