Transformer multi-target and structural parameter comprehensive optimization design method for transformer
A technology for structural parameters and optimal design, applied in multi-objective optimization, inductor/transformer/magnet manufacturing, design optimization/simulation, etc., can solve the problems of increased field strength at the end of the winding, increased field strength at the end of the winding, and winding deformation and other problems to achieve the effect of optimizing more parameters and reducing difficulty
Active Publication Date: 2021-03-26
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0003] When the transformer operates under the rated load, the internal hot spot temperature will affect its internal insulation performance for a long time. Under overload or short-circuit conditions, the electromotive force on the transformer winding will cause the winding to deform, and the field strength at the end of the winding will increase sharply, further affecting Serious hazards caused by safe operation of transformers
The multi-objective optimization of transformers often has contradictions between the structural parameters of the transformer. For example, too much consideration of the hot spot temperature during transformer operation will lead to a decrease in the short-circuit impact resistance of the windings, and the field strength at the end of the winding will also increase. However, the current multi-objective Comprehensive optimization design research is rarely mentioned
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[0029] The implementation process of the present invention will be further described in detail below in conjunction with the accompanying drawings and cases.
[0030] In the first step, the numerical calculation of the transformer optimization target is as follows:
[0031] Calculation of transformer winding short-circuit electromotive force F:
[0032] Amplitude short-circuit electromotive force F a and the axial short-circuit electromotive force F b :
[0033]
[0034] In the formula, m is the number of layers of the winding wire, when m is an even number, m=m, if m is an odd number, m=m+1; n is the number of turns of each layer of the winding; d ins is the distance between the winding layers; the axis is the geometric center of the transformer winding, ω k is the distance between the kth layer winding and the axis, d t is the winding wire diameter, i km is the short-circuit current amplitude of the primary winding, b is the average magnetic density of each layer of...
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The invention discloses a transformer multi-target and structural parameter comprehensive optimization design method which mainly comprises the following steps: firstly, calculating transformer optimization values, namely transformer winding short-circuit electrodynamic force calculation, transformer hot-spot temperature calculation and transformer winding end part field intensity calculation; taking the hot-spot temperature of the transformer, the porosity of the winding, the short-circuit electrodynamic force borne by the winding and the distance between the windings as constraint conditions, taking the optimization target quantity as a target function, and solving through a particle swarm algorithm model to obtain the transformer optimization structure parameter primary winding turn number, the winding wire diameter, the primary winding layer number and the distance between the winding layers meeting the target function.
Description
technical field [0001] The invention belongs to the technical field of transformer optimization design, and more specifically relates to a transformer multi-objective and structural parameter comprehensive optimization design method. Background technique [0002] Transformer is the most important power transmission and transformation equipment in the power system, and its safe and stable operation is very important to the power system. Due to the influence of internal hot spot temperature and aging, the long-term operation of the transformer will cause its internal insulation to be damaged. If it is used for a long time, the transformer will be damaged in light cases, and it will cause casualties in severe cases. While the voltage level and capacity are increasing, higher requirements are put forward for the optimal design of transformers under multi-objectives. Therefore, it is extremely urgent for the multi-objective comprehensive optimal design method of transformers. ...
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Patent Timeline
Login to View More IPC IPC(8): G06F30/27G06N3/00H01F27/34H01F41/00G06F111/04G06F111/06G06F119/04G06F119/08
CPCG06F30/27G06N3/006H01F27/34H01F41/00G06F2111/06G06F2111/04G06F2119/04G06F2119/08Y02E60/00
Inventor 鲁扬陈德明蔡君懿
Owner SOUTHWEST JIAOTONG UNIV