摘要
我国电网建设正处于快速发展时期。大容量、远距离的西电东送与全国联网具有很强的迫切性。为了加快我国电网建设的发展,研究与应用新型输电方式具有非常重要的现实意义。多相输电能够明显地降低导线表面的电位梯度,是提高输送功率密度的重要方法。四相架空输电线路对称性好,线路及杆塔结构简单,在多相输电线路中具有独特的优势。最基本的平衡变压器有如下三种类型:即斯科特变压器、李布郎克变压器与伍德桥变压器。四相四柱式三相变四相变压器是改进型斯科特变压器在四相系统中的推广,它特别适合于四相侧为高压侧的四相输电系统。
Nowadays, the power transmission network is experiencing a period of fast development in China. And the long distance power transmission from west to east China by extremely large amount of capacity as well as interconnecting the whole power network are absolutely urgent to our country. Multi-phase power transmission is an important way to reduce the potential gradient of the transmission conductor surface and increase the power density transmitted. Because four-phase transmission system has the advantages of good symmetry and simple structure of its lines and poles, it has obvious superiority over other multi-phase power transmission system. At present, there are three kinds of balance transformers. They are the Scoot-Teaser transformers, the Le Blanc transformers and the Wood Bridge transformers. The three-phase to four-phase transformer with four-phase four-leg structure is an appliance developed from the Scott-Teaser transformer, it particularly fits for four-phase power transmission systems in which four-phase side is high-voltage.
出处
《电工技术学报》
EI
CSCD
北大核心
2005年第4期9-14,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(50247006)。
关键词
输电系统
多相输电
四相输电
平衡变压器
三相变四相变压器
Power transmission system, multi-phase power transmission, four-phase power transmission,balance transformer, three-phase to four-phase transformer
