Research On Line Protection Experimental Platform Based On Model Design

As an important part of the power system,relay protection plays a decisive role in the safe and stable operation of the power system.As the grid structure becomes more complex,relay protection faces higher requirements.The microcomputer relay protection device has been widely used in the relay protection system,and has gradually become a research hotspot in the field of relay protection.When learning and studying the principles and techniques of relay protection,the method of relay protection experimental platform can reduce the cost and risk of experiment,and can achieve the goal of learning and studying the principle of relay protection.This paper studies the circuit protection experimental platform based on model design.Firstly,on the basis of studying relay protection,the computer-based protection algorithm based on S-function is programmed by MATLAB/Simulink environment,and the microcomputer protection model is built and verified by simulation.Then,by constructing the transmission line model,it is low.The voltage small current simulates “high voltage and large current”,and the signal sampling circuit is designed to collect the fault signal generated by the transmission line model.Finally,the DSP simulation model is built by the microcomputer protection model,and the model can generate the DSP executable code.The project file implements the conversion from the microcomputer protection algorithm model to the control code.The experimental results show that the designed microcomputer protection model can generate DSP control code accurately and quickly.The designed GUI interface can write and improve the microcomputer protection algorithm.When the fault is simulated,the electrical quantity change and protection can be observed.The action signal of the component.Therefore,the experimental platform has certain application value in the study of microcomputer relay protection.Figure[68] Reference[51]...