本文提出了一种基于永磁机构的同步开关的原理、实现及实际应用。该系统采用 高速和高精度A/D 采集与多处理器设计,可实现对10KV 电网电参数的监测、分析,并按 控制策略实现断路器最佳投切点的动态选取。系统参数和状态可通过键盘设置和查询,并由液晶屏显示结果。同传统的断路器投切相比,该系统能够有效地减少断路器投切过程中的暂态过程,因而具有实际应用价值。 关键词:永磁机构;同步开关;多处理器; Abstract: The theory, realization and application of permanent magnetic synchronous switch are proposed in this paper. High-speed and high-precision A/D sampling and multi-processor systems is designed in the system. It can be used to monitor and analyze the electrical parameters of 10KV power net, and realize the dynamic selection of the best closing time for circuit breakers according to control strategy. The system parameters and states can be set and checked by the keyboard, and the results can be displayed on the LCD. Result shows that the system can reduces the transient processes during the close processes of circuit breakers compared with traditional methods, so it can be applied for practical usages. Key words: permanent magnetic mechanism; synchronous switch; multi-processor