In current higher education, more and more emphasis is placed on the cultivation of students' practical ability, and experimental education has become a crucial part of science and engineering education. However, with the increase of experimental projects and the number of students in various disciplines, the number of traditional electrical laboratories and experimental instruments is difficult to meet the needs of students, so the concept of simulation experimental teaching that can match the physical object has begun to become the focus of attention of schools. Simulation teaching experiments is a software technology based on the construction of virtual experimental teaching system, is the existing digital and virtualisation of a variety of teaching laboratories, with complementary to the physical laboratory, assisting scientific research work, safe and easy to maintain and other advantages.