Instantaneous Overcurrent Protection Unit Hardware System Design Of DSP-based Adaptive Voltage

In order to overcome the fault of the action capability of traditional voltage instantaneous trip protection influenced by the moving mode change, the method to have been put forward utilization online real-time computation system power supply synthetical impedance to realize the microcomputer adaptive instantaneous trip protection. With the development of the technology of relay protection, put forward the higher requirement of the real time capability of the protection.So the instantaneous trip protection based on DSP was put forward in this design.Integrated motor protection device market is often only for industrial and mining enterprises, and can not fully meet the needs of the vocational teaching. Modern vocational education has his own characteristics, students and guidance teachers are less difficult to ensure the safety of the students’ practical training. In this design introduction the developing actuality and the coming development direction of relay protection. And we also introduced how to use DSP to meet the designing requirement of the design objective, in this part mainly introduce how to the design scheme and realize the selection procedure of the hardware.Design first introduced in relay protection in the current development at home and abroad and its future development direction. Adaptive quick-break protection theory, analysis, and introduces the theory and algorithms used in the design. Next also introduces the application of digital signal processor (DSP) to achieve the design requirements of the design task, this section introduces the design choice and hardware selection and implementation process of the hardware.