本质安全电路中的电火花  

Electric Spark in Intrinsically Safe Circuits

作　　者：袁港 庄小豫 李家磊 YUAN Gang;ZHUANG Xiao-yu;LI Jia-Lei(CenerTech Tianjin Chemical Research and Design Institute Co.Ltd.,Tianjin 300131,China;National Ex-Product Quality Supervision and Inspection Center(Tianjin),Tianjin 300131,China)

机构地区：[1]中海油天津化工研究设计院有限公司,天津300131 [2]国家防爆产品质量检验检测中心(天津),天津300131

出　　处：《电气开关》2023年第1期4-6,16,共4页Electric Switchgear

摘　　要：本质安全电路的电压、电流及储能元件是电火花的重要来源。借助现行的国家标准GBT/3836.4-2021的评定方法,简述了电压、电流的匹配关系及电容、电感元件的储能能力,利用运算放大电路推理出虚拟电容、虚拟电感潜在的危险,为本质安全电路中的电火花评估提供了理论指导。The voltage, current and energy storage elements of intrinsically safe circuits are important sources of electric sparks.Based on the evaluation method of current national standard GB/T 3836.4-2021,the matching relation of voltage and current and the energy storage capacity of capacitance and inductance elements are briefly described.The potential danger of virtual capacitance and inductance is inferred by using operational amplifying circuit.It provides theoretical guidance for the evaluation of electric spark in intrinsically safe circuit.

关 键 词：本质安全型 本质安全电路 储能元件 虚拟电容 虚拟电感 电火花 

分 类 号：TM13[电气工程—电工理论与新技术]