Study On Device Characteristics And Control System Of Magnetic Valve Controllable Reactor

As a novel dynamic reactive power compensation device, magnetic valve controllable reactor(MCR) has been widely studied in recently years. This paper focuses on the design of MCR and the development of the control system of MCR. In addition, the ways to improve the performance of MCR is also explored.Firstly, the theory of MCR is studied to deduce its mathematical model and get its working process at different moments. The working characteristics of MCR are analyzed, which including harmonic characteristic, control characteristic, dynamic characteristic, loss characteristic.Secondly, the design method of MCR is studied to design a prototype of MCR which the rating voltage is10kV and the capacity is600kVar. The magnetic circuit of designed MCR is simulated by using electromagnetic fields finite element analysis software-Ansoft, while the circuit simulation is analyzed by Matlab.Thirdly, the virtual instrument technology is applied to the controller of MCR. faking industrial personal computer(IPC) as major hardware platform, and LabWindows/CVI as software development platform, the controller of MCR fully based on virtual instrument is designed and implemented. The application of the controller is expanded to other similar products such as thyristor controlled reactor(TCR).Finally, aiming at harmonic problem and slow dynamic response problem of MCR, a new comprehensive operation system which combine fast response MCR and active power filter(APF) is proposed. The new system can compensate reactive power and harmonics of the load. What’s more, the dynamic response speed of MCR is improved by discharging of DC storage capacitor of APF. The principle that improving the dynamic response speed of MCR is analyzed. The control principle of comprehensive operation system is studied. Simulation model is built in Matlab to validate the feasibility of the system.