Design method for improving heat generation and heat dissipation capacity of each encapsulated coil of reactor

Abstract

The invention relates to a design method for improving the heat generation and heat dissipation capacity of each encapsulated coil of a reactor, which comprises the following steps of: obtaining initial design parameters of the reactor, calculating a mutual inductance matrix of the reactor, and obtaining current of each encapsulated coil by combining total current flowing through the reactor; obtaining the loss of each turn of coil in the encapsulation by adopting an analytical method, and calculating the total loss of each encapsulated coil of the reactor; building a model of the reactor, taking the calculated total loss of each encapsulated coil as a heat source condition in the model of the reactor, and obtaining a temperature field simulation result of the reactor through flow field-temperature field coupling; according to the temperature field simulation result, extracting temperatures, flow fields and encapsulation wall surface heat flux densities under different paths, and forming heat load distribution coefficients among the innermost encapsulation, the outermost encapsulation and the internal encapsulation in combination with a temperature rise calculation method; and obtaining an optimal design result of the reactor. According to the design method, by means of the flow field-temperature field coupling simulation technology of the electric reactor, the temperature risedistribution of all packages of the electric reactor is basically the same, and the utilization rate of metal conductors is increased.

Description

technical field [0001] The invention belongs to the technical field of reactors, and in particular relates to a design method for improving the heat generation and heat dissipation capacity of each enveloped coil of the reactor. The heat dissipation capacity of the reactor coil is improved by optimizing the distribution of enveloped heat load, and the utilization rate of metal conductors is improved. Background technique [0002] With the rapid development of the power system, reactors are more and more widely used in the system. Among them, the dry-type air-core reactor has become the preferred type of large-scale power reactor due to its simple structure, good linearity, and light weight. Currently commonly used reactor design methods include the equal current method, the equal electric density method, and the resistive voltage drop module equal method. One side is adjacent to the inner package, and the other side is adjacent to the large space. Compared with the inner pa...

AI Technical Summary

Problems solved by technology

Currently commonly used reactor design methods include the equal current method, the equal electric density method, and the resistive voltage drop module equal method. One side is adjacent to the inner package, and the other side is adjacent to the large space. Compared with the inner package, it has better heat dissipation conditions and lower temperature rise, which leads to the underutilization of the metal conductor utilization of the reactor.

At present, in engineering design, the optimal distribution of reactor heat load is often guided by the effective heat dissipation area of ​​the reactor’s enclosing wall. Although the utilization rate of metal conductors can be improved to a certain extent, its accuracy needs further verification, which limits its practical application

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