| 变频变压器在半波长变频调谐的应用 |
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| 引用本文： | 周攀,伋玉聪,戴朝波,荆平,赵成勇,汪大洋. 变频变压器在半波长变频调谐的应用[J]. 电力系统及其自动化学报, 2019, 31(1): 71-76 |
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| 作者姓名： | 周攀 伋玉聪 戴朝波 荆平 赵成勇 汪大洋 |
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| 作者单位： | 华北电力大学电气与电子工程学院,北京,102206;国网江苏省电力有限公司信息通信分公司,南京,210024;全球能源互联网研究院先进输电技术国家重点实验室,北京,102209 |
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| 基金项目： | 江苏省电力公司科技项目;国家自然科学基金;江苏省自然科学基金;中央高校基本科研业务费专项 |
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| 摘 要： | 针对半波长交流输电(HWACT)线路的调谐问题,本文提出了基于变频变压器(VFT)的变频柔性调谐装置来获得不同的运行频率,使得输电线路满足半波长交流输电的特性。本文论述了变频调谐和变频变压器各自的工作原理,在PSCAD/EMTDC中建立了基于VFT的半波长交流输电变频柔性调谐等值系统模型,并设计出相应的控制策略。对输电线路的电气距离小于和大于半个基频波长的情况分别进行算例分析,仿真结果证明了所述变频调谐方法和变频变压器的实施应用均是有效的。
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| 关 键 词： | 半波长交流输电 变频调谐原理 柔性调谐 变频变压器 |
Application of Variable-frequency Transformer to Half-wavelength Variable-frequency Tuning |
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| ZHOU Pan,JI Yucong,DAI Chaobo,JING Ping,ZHAO Chengyong,WANG Dayang. Application of Variable-frequency Transformer to Half-wavelength Variable-frequency Tuning[J]. Proceedings of the CSU-EPSA, 2019, 31(1): 71-76 |
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| Authors: | ZHOU Pan JI Yucong DAI Chaobo JING Ping ZHAO Chengyong WANG Dayang |
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| Affiliation: | (School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206, China;Information Communication Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210024, China;State Key Laboratory of Advanced Power Transmission Technology,State Grid Global Energy Interconnection Research Institute,Beijing 102209,China) |
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| Abstract: | To solve the tuning problem existing in the half-wavelength AC transmission ( HWACT ) line , a variable-fre-quency flexible tuning device based on variable-frequency transformer ( VFT ) is proposed in this paper to obtain differ-ent operating frequencies , thus making the transmission line satisfy the corresponding characteristics of HWACT. First , the operating principles of variable-frequency turning and VFT are analyzed , respectively. Then , an HWACT variable-frequency flexible turning equivalent system model based on VFT is established in PSCAD/EMTDC , and the corresponding control strategy is designed. Finally , two numerical examples are analyzed , in which the electrical dis-tance of the transmission line is shorter or longer than one half of the fundamental frequency wavelength. Simulation re-sults show the effectiveness of the proposed variable-frequency turning method and the VFT implementation. |
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| Keywords: | half-wavelength AC transmission ( HWACT ) variable-frequency tuning ( VFT ) principle flexible turning variable-frequency transformer |
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