Abstract
Compared with fixed value high voltage shunt reactor, the controllable shunt reactor can increase the transmission capability, suppress the over voltage and provide dynamic voltage support for the UHV/EHV AC transmission line application. Among various controllable reactor schemes, the magnetic saturation type controllable reactor is remarkable for its low cost and low footprint. According to the direction of flux, which is generated by control winding, the magnetic saturation type controllable reactor can be categorized into two types: Magnetically Controlled Reactor (MCR) and orthogonal-flux type controllable reactor. In this paper, the orthogonal flux controllable reactor will be presented. Firstly, the basic concept of orthogonal flux type controllable reactor is introduced and the magnetizing behaviors under different DC magnetizing strength are deduced. Secondly, the mathematic model of the orthogonal flux controllable reactor is established by using Matlab/Simulink. Finally, the performance of the designed controllable reactor is analyzed based on the model.
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