The Development Of Insulated Monitoring Device In Secondary AC Circuit

The secondary circuit plays an important role in guaranteeing the security of power product and supplying high-quality electrical energy for customers. However, there has not been an on-line monitoring device that can monitor the multipoint earth of the secondary AC circuit. RSJ820 insulation monitoring device of the secondary AC circuit can prevent this problem effectively, and improve the security and stability of the power network. The product fills the gap in insulated monitoring of the secondary AC circuit in power system.Firstly, this paper discusses the working principle of the insulated monitoring device of RSJ820 secondary AC circuit, and introduces the basic model structure of XC68HC912DG128 microcontrollers. Secondly, it expatiates several evolution arithmetic of rapid speed and the several feasible schemes of software optimization in the nested real time system, and design a programming structure which use the multitask idea. At the same time, it brings forward the ideology of the software hiberarchy structure and the hardware modularization. Moreover, it introduces the sine wave - producing schemes and the anti-jamming measures. The locale running proves that RSJ820 achieve the design purpose and meet the demand of the practice run.