多电飞机电气系统可靠性网络拓扑分析法

Topology of power system reliability in more electric aircraft

多电飞机电气系统的拓扑结构是决定其可靠性的关键因素.针对如何定量分析评估多电飞机电气系统拓扑结构可靠性的问题,提出了一种定量分析多电飞机电气系统的拓扑方法及一种适用于多电飞机电气系统可靠性评估的算法.该分析方法从系统承受故障能力的角度出发,对系统结构进行拓扑分析并能得出定量的计算结果;该可靠性评估算法利用欧式距离和熵权对分析结果进行多属性评估研究,能够对不同网络结构系统的可靠性进行排序评定.通过算例计算表明:此分析方法和可靠性评估算法是有效的,余度结构的电气网络结构可靠性较高,是未来多电飞机电气网络结构的发展方向.

The topological structure is one of the key factors affecting the reliability performance of the electrical power system （EPS） in more electric aircraft （MEA）. A topology analysis method was adopted to build a universal algorithm of reliability evaluation. Qualitative results could be obtained through this method. Faults tolerance ability of EPS in MEA was focused in the analysis process. Quantitative indices was obtained through euclideandistance and entropy calculation of the analysis results in the evaluation process, Based on this reliability evaluation platform, qualitative analysis and quantitative indices calculation of different aircraft topological configurations were experienced using a sample system data. Result shows that the reliability level of redundancy power network is better than others and it is the basical configuration prototype of future aircraft power networks.