民用飞机电源系统电路保护装置选型及适航验证方法研究

Study on Selection of Circuit Protection Devices and Airworthiness Verification Method for Civil Aircraft Power System

随着全电飞机的迅速发展,飞机上的用电设备不断增多,供电线路上发生电气故障的概率也逐渐增大,而供电线路上的保护装置能极大地隔离供电线路的过载或短路故障,因此电气系统的保护器件对供电的可靠性和安全性越来越重要。合适的电路保护装置能有效地提高飞机的安全性,降低飞机灾难性事件发生的概率。对于民用飞机,要取得适航证,选择合适的电路保护装置是适航条款中必不可少的环节。基于此,提出了某飞机电网中保护器件的分类、选用方法及验证所适用的方法。

With the fast development of all electric aircraft,there are more and more electric equipments on aircraft,and the probability of electrical faults occurring on power supply wires is also growing.The protection devices can greatly isolate over-load or short-circuit faults,so the protection devices in an electrical system is increasingly important for the reliability and safety of power supply.An appropriate circuit protection device can effectively improve the aircraft safety and reduce the probability of aircraft disasters.As a result,in order to obtain an airworthiness certificate for civil aircraft,the selection of appropriate circuit protection devices is an essential link in airworthiness items.On this basis,a method is proposed to classify and select protection devices used in the power network of one type of aircraft and further verify its airworthiness.