Flexible optimization method of multi-objective transfer strategy applied to multi-electric aircraft power outage load

Abstract

The invention provides a multi-objective transfer policy flexible optimization method applied to power failure loads of a more electrical aircraft. The method comprises the steps of 1, generating load scenes by adopting Monte Carlo and multidimensional joint distribution theories according to load running data in various working conditions; 2, performing scene reduction on the generated load scenes by using a Ward system clustering method; 3, building a multi-objective nonlinear power failure load transfer policy flexible optimization model; 4, solving the optimization model by adopting an improved NSGA-II algorithm to obtain a Pareto front of the power failure load transfer policy flexible optimization model after fault occurrence of a power generator; and 5, processing the Pareto front obtained in the step 4 by utilizing a technique for order preference by similarity to ideal solution, and finally obtaining a Pareto optimal compromise solution at the moment. According to the method, targeted transfer schemes can be generated for the power failure loads in different working conditions and different power generator fault positions; and results have scientificity and universality.

Description

technical field [0001] The invention relates to the field of operation optimization of the electrical system of a multi-electric aircraft, in particular to a flexible optimization method of a multi-objective transfer strategy applied to a power outage load of a multi-electric aircraft. Background technique [0002] As one of the main means of aircraft power replacement, the concept of the More Electrical Aircraft (MEA) is not only important for improving fuel efficiency and aircraft system operation reliability, but also for the integration of key equipment and components. Reuse has far-reaching value in reducing construction and operation and maintenance costs, enhancing design flexibility and improving the maintainability of equipment. Considering that the proportion of the electrical system in the energy supply of the MEA is gradually increasing, it is of great significance to study the safety of the aircraft electrical system during operation to ensure the normal operati...

AI Technical Summary

Problems solved by technology

However, such a transfer strategy does not flexibly take into account the actual load requirements of the MEA when it operates under different working conditions and the overall security of the system after transfer, which has certain disadvantages

[0003] In view of the fact that the current multi-electric aircraft load transfer strategy does not consider the overall operation safety and power quality of the electrical system, this invention introduces the concept of flexibility in the industrial process system, and measures it by the node voltage flexibility parameters of the MEA electrical system under different operating states The safety margin of the system operation, combined with the network loss minimization requirements, constructed a multi-objective nonlinear load transfer strategy flexible optimization model under different operating conditions and different generator failures, and finally obtained a scientific The optimization strategy of load transfer is beneficial to improve the power quality and safety margin of network operation

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