天然气输配系统电气设备的本质安全性能优化  

Optimization of intrinsic safety of electrical apparatus of the gas distribution pipeline system

作　　者：郝翔 

机构地区：[1]KKR全球能源基金,上海200001

出　　处：《油气储运》2015年第4期417-421,共5页Oil & Gas Storage and Transportation

摘　　要：应用于天然气输配站中的电气设备必须满足防爆要求,本质安全型电气设备是最佳的防爆形式。以电源为本质安全电气设备为研究对象,通过建立精确的电源电路时变模型,结合实验波形,研究了电感分段放电特性及其分断火花的引燃能力与电路参数的关系。基于最小点燃释放能量理论,以同时满足本质安全特性要求及电气性能指标为目标,提出了一种电感、电容参数优化设计方法,通过数值分析获得了最优化参数的取值范围。实验结果表明:参数优化后的电路,在满足本质安全性能指标的同时,输出纹波电压仅为输出电压的1.25%,也满足了电气性能指标,是一种可行的参数优化方法,大大提高了电气设备的安全性能。The electrical apparatus used in the gas transmission and distribution station shall meet the requirements for anti- explosion. Intrinsically safe electrical apparatus is the best choice against explosion. With the power supply device as object of the intrinsically safe electrical apparatus study, using the precise time-varying model for power and circuit, and combining the experiment waveform, this paper has studied the features of sectional discharge of electrical induction as well as the relations between ignition capability of sectional sparks and circuit parameters in details. Based on the theory of Minimum Ignition Energy and in an aim to meet the requirements for intrinsic safety and electrical performance, an optimization and designing approach for electrical induction and capacity parameters is proposed. Through analysis of numerical simulation, the range to select the optimized parameters has been worked out. The experimental results indicate that, as for the circuit after parameter optimization, it meets the requirements for intrinsic safety, and also meets the requirements for electrical performance, since the input ripple voltage is only 1.25% of input voltage. It is a feasible approach for parameter optimization and can greatly enhance the safety performance of electrical apparatus.

关 键 词：天然气输配管网 电气设备 本质安全 参数优化 

分 类 号：TE978[石油与天然气工程—石油机械设备]