Precision Error Analysis of Wind Turbine and its Control and Protection System Model in a New Type of DC System

With the increasing proportion of new energy connected to the grid and the application of trans-regional ultra high voltage DC transmission technology, the DC form of power system is becoming more and more significant, and the requirements for control and protection systems are becoming higher and higher. Based on the doubly-fed wind power system, the influence of two different converter structures on the output accuracy error of the wind power generator is studied in this paper, and the corresponding model is built in Simulink for simulation verification. The simulation results show that the different structure of the converter will have a great influence on the output accuracy error of the wind turbine, and which structure of the converter should be selected according to the requirements of the actual situation.