助航灯光回路绝缘电阻下降模型研究

Research on Insulation Resistance Drop Model in Airfield Lighting Circuit

助航灯光回路作为保障民航飞行的重要设施,其安全运行是非常重要的,绝缘电阻下降是助航灯光回路大部分故障的根源。在大量的现场试验与理论研究的基础上,以上海机场实际数据作为依托,充分结合助航灯光回路的特点,提出了灯光回路绝缘电阻下降规律的模型,给出了在助航灯光回路中绝缘电阻与初始值及时间之间的定量关系,最后根据机场数据进行计算机仿真,仿真结果与实际结果基本一致,证明了模型的正确性。

Airfield lighting circuit operating safely is very important as the significant facilities to protect civil aviation.The decline in insulation resistance is the major cause of failures in airfield lighting circuit.Based on lots of field experiments and theoretical researching,depending on practice data provided by Shanghai airport,and combined with the features of airfield lighting cir- cuit,the text puts forward a set of model for insulation resistance drop in lighting circuit and establishes the quantitative re- lation among insulation resistance in airfield lighting circuit,initial value and time.Finally the computer simulation proceeds ac- cording to airport data.The simulation results are basically consistent with the actual results,and proves the correctness of the model.