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.
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)
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
high-frequency excitation melting ice
high-frequency deicing excitation
phase-shifting transformer
power unit
MATLAB
