Optimization method and system for insulation structure of converter transformer valve side sleeve outgoing line device

Abstract

The invention discloses an optimization method of an insulation structure of a converter transformer valve side sleeve outgoing line device. The method comprises the steps of determining factors influencing the insulation structure of the converter valve side sleeve outgoing line device, constructing each optimization objective function based on the factors, constructing an evaluation function based on each optimization objective function, and synthesizing the evaluation function by using a penalty function and a constraint condition to obtain the insulation structure of the converter valve side sleeve outgoing line device; determining the weight of each optimization objective function and solving an unconstrained objective function; and obtaining insulation structure parameters and like of converter transformer valve side sleeve outgoing line device. According to the method, the importance of each optimization objective function is defined by constructing the optimization objective function of each optimization objective, so that the insulation structure of the converter transformer valve side bushing outgoing line device can be optimized.

Description

technical field [0001] The invention relates to the technical field of electrical insulation, in particular to a method and system for optimizing the insulation structure of a bushing outlet device on a valve side of a converter transformer. Background technique [0002] The insulation structure of the valve-side bushing outlet device of the converter transformer is an insulation device connecting the valve-side bushing and the converter transformer winding coil. Therefore, it is necessary to ensure that the insulation structure of the valve-side bushing outlet device has good electrical insulation performance. [0003] At present, the insulation structure of the bushing outlet device on the valve side of the converter transformer is divided into open type and closed type, among which: (1) The open type outlet structure has a simple insulation structure, which is beneficial to the flow of transformer oil and facilitates heat dissipation, and the electric field distribution in...

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Problems solved by technology

[0003] At present, the insulation structure of the bushing outlet device on the valve side of the converter transformer is divided into open type and closed type, among which: (1) The open type outlet structure has a simple insulation structure, which is beneficial to the flow of transformer oil and facilitates heat dissipation, and the electric field distribution in the barrier cardboard is relatively small. Reasonable, but the tangential field strength of the transformer oil along the surface of the insulation barrier is relatively high; (2) The closed outlet structure is composed of special-shaped barriers, the structure is relatively complex, the heat dissipation conditions are poor, and the electric field intensity in the normal direction it bears is relatively high , but the tangential electric field strength along the surface of the barrier in oil is small, which can prevent the surface flashover along the oil-paper interface

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