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Research on Power System Network Structure and Simulation of Trunk Liner

Author: ChengZhiYong
Tutor: YangShanShui
School: Nanjing University of Aeronautics and Astronautics
Course: Proceedings of the
Keywords: Large passenger aircraft Power supply system LabVIEW Electronic prototype Simulation and verification
CLC: V242
Type: Master's thesis
Year: 2011
Downloads: 112
Quote: 0
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Abstract

Relationship between the structure of the aircraft power supply system to the power supply system reliability, and redundancy and fault-tolerant power supply performance, to carry out the structure of the power supply system, improve mission reliability of the power supply system, and the simulation experiment is a large passenger aircraft for an important part of the design of electrical systems. The structure of large passenger aircraft power supply system and simulation verification technology, the main contents are as follows: First, the structure of the power supply system of a large passenger aircraft. According to the requirements of the aircraft grid redundancy and fault-tolerant design combined with the the aircraft grid commonly used type of structure, designed set based on the structure of large passenger aircraft power supply system of the hybrid grid structure, and on the basis of this structure its AC and DC reconfigurable logic design, reconfigurable control fully consider the impact of the power and contactor normal, abnormal and fault status. The grid structure is clear, correct design of reconfigurable logic, to meet the power requirements of redundant degrees. Next, the reliability of the power supply system. Analysis to compare a variety of reliability analysis method using the Ahmad direct strike disjoint minimal path set algorithm analysis to calculate the reliability of the power supply network. The algorithm logic, computational efficiency, and be able to solve the drawbacks of commonly used reliability calculation operator workload, consuming large. The calculation results show that the power supply system in the case of continuous work 200 hours, all critical busbar power supply unreliability of only 0.04% meet the requirements of the power supply system reliability indices. Then, simulation analysis of the grid structure and control logic. Simulation studies can reduce the cost of design and development cycle of the power supply system. Simulated electronic prototype design based on LabVIEW development environment, the software is able to set the various components of the normal / fault state, simulated under various fault protection action demonstrates the grid dynamically reconfigurable process, correctness of control logic and power supply fault tolerance on the supply ability simulation. Finally, build the power supply system structure simulation and verification platform. The platform is a small supply network simulation aircraft power supply system structure, the set of multi-channel digital control detection with analog waveform acquisition in one, collecting high accuracy with the function of the the simulation grid control and power supply system state detection. Through a variety of the power contactor failure of analog simulation grid, detect its fault protection functions and performance of uninterrupted power supply, verify a large passenger aircraft power supply system structure and the control logic design correctness.

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