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水冷电抗器多物理场耦合仿真研究

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电抗器能够抑制电网中的电压波动,改善电能质量.在电抗器的运行过程中,电抗器的绕组和铁芯会产生大量的损耗,这些损耗所产生的热量若不能即使排出则会影响电抗器的正常运行甚至导致变流器损坏.本文通过建立电磁-热-流耦合仿真模型,研究了水电一体式电抗器以及水电分离式电抗器的散热性能.多物理场耦合仿真能够精确的得出电抗器损耗大小及分布情况.为精准计算变流器内部整体损耗提供了依据,降低了变流器冷却系统的设计余量,从而达到降本增效的目的.研究结果表明:水电一体型电抗器冷却空气换热量占比 1.2%,水电分离型电抗器冷却空气换热量占比 13.6%.
Research on Multi-Physics Field Coupling Simulation of Water-Cooled Reactors
The reactor can suppress voltage fluctuations in the power grid and improve power quality.During the operation of the reactor,a large amount of losses will be generated by the winding and core.If the heat generated by these losses cannot be discharged in time,it will affect the normal operation of the reactor and even cause damage to the converter.In this paper,by establishing an electromagnetic-thermal-fluid coupling simulation model,the heat dissipation performance of the integrated water and electricity reactor and the separated water and electricity reactor is studied.Multi-physics field coupling simulation can accurately obtain the size and distribution of reactor losses.It provides a basis for accurately calculating the overall loss inside the converter,reduces the design margin of the converter cooling system,and thus achieves the purpose of cost reduction and efficiency increase.The research results show that the proportion of cooling air heat exchange of the integrated water and electricity reactor is 1.2%,and the proportion of cooling air heat exchange of the separated water and electricity reactor is 13.6% .

water-cooled reactorthermal designloss calculationmulti-physics fieldsimulation calculation

杨兴隆、孙保涛、王婷

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株洲变流技术国家工程研究中心有限公司,株洲 412001

水冷电抗器 热设计 损耗计算 多物理场 仿真计算

2024

环境技术
广州电器科学研究院有限公司

环境技术

CSTPCD
影响因子:0.995
ISSN:1004-7204
年,卷(期):2024.42(9)