配电网电磁式柔性互联装置的快速投切方法

A fast switching method for a distribution electromagnetic soft interconnection device

传统的配电网电磁式柔性互联装置采用机械式有载调压开关,存在着调节速度有限、不能频繁投切、存在机械磨损且容易产生电弧等缺点。针对这一问题,对电磁式柔性互联装置的切换开关结构进行了改进,提出了对应的快速投切方法。提出的电子切换开关结构由反并联晶闸管开关抽头和串联的多耦合电感两部分构成,可以跨多级调节,不仅能有效抑制抽头切换时的短路电流水平,实现可靠投切,还可以减少调节支路,缩减调节次数,缩短投切时间。最后,搭建了Matlab/Simulink仿真模型,验证了快速投切方法的可行性。

The traditional electromagnetic soft interconnection device of a distribution network uses a mechanical on-load voltage regulating switch,which has some disadvantages such as limited regulating speed,less frequent switching,mechanical wear and it is easy to produce an arc.To overcome these disadvantages,the structure of the switching switch of the electromagnetic soft interconnection device is improved,and a corresponding fast switching method is proposed.The proposed electronic switch structure consists of reverse parallel thyristor switch taps and series multi-coupling inductors,which can be adjusted across multiple levels.It can not only effectively restrain the short circuit current level during tap switching and realize reliable switching,but also reduce the regulation branch,reduce the number of regulations,and shorten the switching time.Finally,this paper builds a Matlab/Simulink simulation model to verify the feasibility of the fast cutting method.