Comprehensive optimization method of simulation credibility evaluation model of electric propulsion system

Abstract

The invention discloses a comprehensive optimization method of a simulation credibility evaluation model of an electric propulsion system. The comprehensive optimization method comprises the following steps: decomposing the electric propulsion system into multiple subsystems; decomposing the subsystems under various standards of a simulation system with an establishment process of system simulation as an evaluation standard until obtaining a minimum unit; carrying out topology modeling on the electric propulsion system; collecting branch voltages, a phase angle, active power and passive power of the electric propulsion system; adopting corresponding intelligent algorithms to optimize different attributes of the electric propulsion system to obtain a credibility evaluation optimization model; collecting data of an actual system under the same working condition, and using the credibility evaluation optimization model to test the actually collected data to obtain credibility; if the credibility is smaller than a credibility index n, carrying out topology modeling on the electric propulsion system again; and if the credibility is larger than the credibility index n, the credibility evaluation is terminated. The comprehensive optimization method disclosed by the invention is high in stability and is high in reliability.

Description

technical field [0001] The invention belongs to the field of electric propulsion systems and simulation evaluation models, and in particular relates to a comprehensive optimization method for simulation credibility evaluation models of electric propulsion systems. Background technique [0002] In recent years, simulation technology, as the most advanced science and technology, has been widely used in various research fields due to its advantages of good economy, high safety and strong operability, and it has also brought huge economic benefits. Simulation technology is also known as another new method of dissecting the real world besides theoretical research and physical analysis, and has become another technical means to correctly understand the objective world. Therefore, the use of simulation technology to study the actual system can not only effectively reduce the cost of scientific research, shorten the development cycle, but also speed up the pace of improving the perf...

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Problems solved by technology

[0004] At present, the model construction problem of simulation reliability is mainly reflected in two aspects. One is that the actual system has no potential failure problems, but the simulation model results have found potential failure problems, and the operation department has to lower the operating limit, resulting in huge economic losses. ; Second, there are potential faults in the actual system. The simulation model does not describe it correctly, and it is impossible to formulate corresponding control measures, which brings hidden dangers to the safe operation of the power system.

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