基于Simulink仿真的断路器辅助触点多工况模拟器设计

Design of Multi-condition Simulator for Auxiliary Contacts of Circuit Breaker Based on Simulink Simulation

断路器辅助触点异常工况及该工况下母线发生区内外故障试验是母线保护装置动模检测的重要项目。为此提出了一种断路器辅助触点多工况模拟方案,可便捷地实现断路器辅助触点正常、反接、常开、常闭、无效等运行工况。基于MATLAB/Simulink搭建了仿真算例,对该方案进行仿真验证,结果表明该设计方案有效可行。

The abnormal working conditions of auxiliary contacts of circuit breakers and the fault tests inside and outside busbar occurring under these conditions are important items for dynamic model detection of busbar protection devices. A multi-condition simulation scheme for auxiliary contacts of circuit breakers is proposed, which can conveniently realize normal, reverse, open, closing and invalid operation conditions of auxiliary contacts of circuit breakers. A simulation example is built based on MATLAB/Simulink, and the proposed design scheme is verified by simulation. The experimental results show that the design scheme is effective and feasible.