摘要
基于特定的电路参数及综保设备,分析了交流电串入变电站直流母线正负极及微机综保外部跳闸开入回路的光耦上侧时对微机继电器的影响,使用Multisim仿真模拟了交流扰动时光耦两端的电压波形,验证了理论分析的正确性,提出了对重要的跳闸回路使用大功率中间继电器进行重动的对策,对中间继电器的动作功率和动作时间的选定进行了分析,对工程应用具有借鉴意义。
The study theoretically analyzes how an AC power flow penetration into positive and negative poles of the DC bus in the substation and the optocoupler of the external tripping input circuit of the microcomputer integrated protection impacts microcomputer relay based on specific circuit parameters and integrated protection equipment.Multisim simulation is used to simulate the voltage waveform at both ends of the coupling during AC disturbance,verifying the correctness of the theoretical analysis.The strategy of using high-power intermediate relays for resetting important tripping circuits is proposed,and the selection of action power and action time of intermediate relays is analyzed,which provide useful information for engineering applications.
作者
高嵩
GAO Song(Sinopec Zhongyuan Petrochemical Co.,Ltd.,Puyang 457000,China)
出处
《电工技术》
2024年第13期112-114,共3页
Electric Engineering
关键词
交流扰动
光耦
分布电容
重动中间继电器
AC disturbance
optocoupler
distribution capacitance
resetting intermediate relay
