Research On Low Voltage Control At The End Of 10kV Line Based On MCR Type Reactive Power Compensation Devic

Factors such as load fluctuation and insufficient reactive power will cause a decrease in power quality.The compensation of traditional fixed capacitor banks cannot track the dynamic changes of load,and the switching of fixed capacitor banks will generate overvoltage.Frequent switching of fixed capacitor banks will also affect the life of components.This paper analyzes the mathematical model of magnetic-valve controllable reactor(MCR)reactive power compensation device.The response characteristics of MCR reactive power compensation device under PI control strategy are analyzed.The response characteristics of MCR reactive power compensation device under model free adaptive control(MFAC)control strategy are compared and analyzed.The stability,stability margin and steady-state output error of the system under the two control strategies are calculated.The advantages and disadvantages of the two control strategies are compared and analyzed.At the same time,the operation status of 10 k V line under the compensation of MCR reactive power compensation device is described when the system disturbance such as short circuit fault occurs.Through the real-time data of 10 k V line operation,the problem of low voltage control at the end of 10 k V line is analyzed in depth.According to the analysis model of a 10 k V line,the MCR reactive power compensation device is added to the line,and the advantages and disadvantages of the placement scheme are analyzed.The abi lity of MCR reactive power compensation device to resist sudden reactive power shortage is discussed in detail.The advantages and disadvantages of MCR reactive power compensation device and fixed capacitor bank compensation are compared.At the same time,the operation condition of MCR reactive power compensation device is demonstrated when the system disturbance such as short circuit fault occurs.Based on the research and discussion of the principle of MCR reactive power compensation device,this paper analyzes the advantages of MFAC control strategy in the control of MCR reactive power compensation device,applies MCR reactive power compensation device to the treatment of low voltage at the end of the line,and demonstrates the ability of MCR reactive power compensation device to resist sudden reactive power shortage.It provides a strong theoretical support for the application of MCR reactive power compensation device to the treatment of low voltage at the end of the line,and plays an important role in the treatment of low voltage at the end of the line in the future.