Structure Parameters Optimization of the Rain Cover and Ventilation Duct of Dry Air Core Reactor under the Forced Air Cooling Condition

Liu, Jianben; Yuan, Fan; Zhou, Bing; Yang, Shouwei; Lv, Kai; Tang, Bo

doi:10.1002/tee.23568

Cited by 3 publications

(1 citation statement)

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“…A thermal load optimization technique based on the heat dissipation characteristics of the encapsulations of the air-core reactor is introduced in [18] to enhance metal conductor utilization, whereby a fluid-thermal coupled FEM model is built to obtain detailed temperature field distribution results. The structure parameters of rain cover and the ventilation duct of the air-core reactor under forced air cooling are optimized based on a quantum genetic algorithm, with a fluid field-temperature coupled FEM model established to estimate the temperature distribution in [19]. A thermal efficiency optimization method using a dry-type core reactor based on the particle swarm optimization algorithm is proposed in [20].…”

Section: Introductionmentioning

confidence: 99%

Thermal Simulation and Analysis of Dry-Type Air-Core Reactors Based on Multi-Physics Coupling

Wu,

Chang,

Zhang

et al. 2023

Energies

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A reactor is an important piece of equipment used for reactive power compensation in power system and has a significant impact on the safe operation of power system. Thermal behavior is one of the main causes of reactor failures. For an accurate analysis of the thermal behavior of reactors, electromagnetic–thermal–fluid multi-physics coupling modeling is chosen. However, there is a huge difference in size between the overall structure of the reactor and its insulating material, which makes it difficult to perform mesh generation, resulting in dense mesh and significantly increased solution degrees of freedom, thus making the solution of the reactor’s multi-physics field model very time-consuming. To address this, this paper proposes a simplified processing method to accelerate the solution calculation of the reactor’s multi-physics model. This method calculates the equivalent turns of each encapsulate with parallel coils in the reactor, simplifying the encapsulate into a single-layer coil, thereby greatly reducing the division and solution degrees of freedom of the multi-physics model, and thus accelerating the simulation calculation. Taking a BKDCKL-20000/35 dry-type air-core shunt reactor as an example, the outer diameter of the coil is nearly 12,000 times bigger than the coil insulation, which is a huge size difference. Both refined models and simplified models are established. Compared to the simulation results of the detailed model, the simplified model demonstrates good accuracy; the maximum relative error of temperature is just 2.19%. Meanwhile, the computational time of the simplified model is reduced by 35.7%, which shows promising effectiveness and significant potential for applying the optimization design and operation prediction of dry-type air-core shunt reactors for enhanced thermal performance.

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Section: Introductionmentioning

confidence: 99%