High-voltage switch cabinet insulator electric field optimization method based on quantum genetic algorithm

Abstract

The invention discloses a high-voltage switch cabinet insulator electric field optimization method based on a quantum genetic algorithm. The method comprises the following steps that 1) a high-voltage switch cabinet insulator geometric model is built; 2) the high-voltage switch cabinet insulator model is subjected to electrostatic field simulation to obtain the maximum electric field intensity value, and structural factors for influencing the electric field distribution and the maximum field intensity are determined through changing variable structural parameters; 3) a population is initialized; 4) an objective function is determined, and a fitness degree function is calculated, wherein the objective function of an individual is the electric field intensity corresponding to the parameters; 5) for the individual population consisting of binary gene codes, the variation is carried out after the selection and the full-interference crossing; and 6) whether the quantum genetic operation stop condition is met or not is judged, if the stop condition is not met, the operation returns to the first step, and if the stop condition is met, the corresponding response value is calculated according to the optimized structure parameters obtained in the fifth step, and the maximum electric field intensity value is obtained. The method can realize the optimization on the high-voltage switch cabinet insulator electric field.

Description

technical field [0001] The invention relates to an optimization design method of an insulator electric field, one of the internal structures of a high-voltage switch cabinet, and belongs to the technical field of structural optimization of a high-voltage switch cabinet in a power system. Background technique [0002] As a complete set of switchgear for receiving and distributing network power and controlling, protecting and monitoring electrical equipment, switchgear is widely used in various substations (stations). Since the gas-insulated switchgear adopts a metal-enclosed structure, components such as circuit breakers and switches are sealed in the SF6 gas chamber, but the sensitivity of the SF6 gas insulation performance to the uniformity of the electric field is much greater than that of air, that is, the SF6 under extremely uneven electric field. The breakdown voltage is much lower than that in a uniform electric field than in air. Therefore, in the design of the switc...

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Problems solved by technology

[0003] The sealed feature of the switchgear makes it difficult to measure the electric field performance of the switchgear at work and related factors affecting the electric field performance of the product during the experiment, so it cannot guide the improvement and optimization of the switchgear well, and can only be based on past experience. Make some local modifications, and then manufacture prototypes, experimental tests, and then partial modifications until the product passes the experimental test

This method based on experience and manual repeated processes not only has a long time period, low efficiency, and the performance of the switchgear cannot be guaranteed, but also tends to increase the scrap rate in the manufacturing process and is costly, especially not conducive to the research and development of new products.

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