摘要
介绍了继电保护用光耦隔离开入回路的工作原理,通过Multisim软件对开入回路进行仿真分析。对55%、70%额定电压输入时的最坏情况进行计算,优化开入回路中元器件参数以符合设计预期。根据仿真计算结果,对失效电路进行改进,并经实测结果,验证了改进方案的准确性。
This paper introduced the principle of binary input circuit that uses opto-coupler in relay protoection and analyzed the simulated circuit using Muhisim software with manual calculation. It computed the worst-case condition at 55% and 70% rated input voltage, and optimized the circuit component parameters to make it run as expected. It changed the circuit compoments that run abnormally based on the simulation. The test results show that the improvement is correct.
作者
石建
徐丽青
岳峰
SHI Jian XU Liqing YUE Feng(Guodian Nanjing Automation Co., Ltd., Nanjing 211153, China)
出处
《电器与能效管理技术》
2017年第12期55-57,共3页
Electrical & Energy Management Technology