Research On Control Strategy Of Flexible Switching Regulator In Power Supply System

In power supply operation of the power system and the power plant,the maintenance and fault of the transformer must be switched to change the operation mode of the bus.The change of the operation mode will cause the power supply of the partial load to be interrupted.The operating system and the intelligent switching operating system are mainly to standardize the occurrence of accidents in the switching operation process,and fail to solve the problem that the load is cut off and the switching operation is complicated and inefficient in the switching operation.This paper breaks the traditional method and designs a flexible switching regulator that can perform the switching operation under the condition of charging.Mainly by controlling the inverter to generate a power supply with the same potential as the voltage vector difference between the bus bars,controlling the inverter to reduce its output voltage and gradually adjusting the voltage between the bus bars to change the power flow variation on the transmission line,and finally making the voltages on the two bus bars The amplitudes are equal in phase,and the same potential closing operation of the bus branch is realized.In this paper,the topology of the flexible switching device is determined by the combination of rectification and inverter,and the appropriate circuit parameters are determined according to the mathematical model,so that the energy exchange capacitor can more easily reach the control target,and the double loop of the voltage outer loop and the current inner loop is designed PI regulator and parameters.and using Matlab/simulink to simulate and analyze its model and its control strategy in power system,verify that the control strategy has good dynamic characteristics and static characteristics,fast adjustment speed,small overshoot,Lu Good bar.The flexible switching technology can directly perform the switching operation without affecting the power supply,and can play an important role in ensuring the reliability of the user's power supply,the safety of the switching operation and the improvement of the working efficiency.