Abstract
In this paper, the basic structure and design parameters of an oil-immersed air core coupling reactor were given according to the interruption requirement of the 160 kV mechanical direct current circuit breaker, and a field-circuit coupled finite element model was established based on the ANSOFT simulation platform. The prototype test results verified the correctness of the simulation calculation method. The coupling reactor design was optimized to minimize the total volume, taking equal height and heat flux design parameters as the optimization object, and the influence of the insulation distance between the oil tank and encapsulations on the secondary current of the coupling reactor were analyzed. Meanwhile, a combined optimization method about the reactor body and oil tank was proposed, and the optimization contour surface was plotted, which described the relationship between the total volume of the coupling reactor and structure parameters of the reactor body and oil tank. According to the optimization design results, the total volume was only 89% compared with the initial design parameters, and the correctness was verified by the simulation results.
Highlights
With the development of flexible direct current transmission technology and the progress in power electronics technology, high-voltage DC transmission has been widely used in long-distance high power transmission, cable transmission, and non-synchronous communication of AC systems [1,2,3]
In the ANSOFT, so the actual structure of the reactor body could be equivalent to a 2D model, and the height, radial width, and turn number of encapsulations were equal to the actual design parameters
The structure type type and and initial initial design design parameters parameters of the oil-immersed oil-immersed air core coupling coupling reactor reactor were given, and a field-circuit coupled finite element model was established based on the the ANSOFT
Summary
With the development of flexible direct current transmission technology and the progress in power electronics technology, high-voltage DC (direct current) transmission has been widely used in long-distance high power transmission, cable transmission, and non-synchronous communication of AC systems [1,2,3]. In References [10,11,12], a combined thermal–electromagnetic optimization method is put forward, and the relationship between the volume of the reactor and geometric factors can be obtained under the conditions that the inductance and maximum temperature rise remain. In the [14],when a design method for the coupling is percentage total volume over minimum the shape proportion deviates reactor from the proposed that can realize the same thermal and stress distributions for the inner encapsulation, optimal value. Same thermal and stress test distributions forcorrectness the inner encapsulation, this method is taking the total volume of the coupling reactor as the optimization object, the influence mainly concerned with the dry-type air core reactor. The structure type and initial parameters of an oil-immersed air core coupling
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