The disadvantages of the traditional three-column core structure three-phase three-component (TPTC) transformer are its incomplete symmetry, the different magnetic circuit length, and the coupling parameters, which lead to each phase voltage error varying differently. In this article, a new structure optimization design of a new type of three-phase three-element combined transformer with a new three-cylinder core structure was proposed. The simulation analysis of the magnetic field distribution and the voltage error characteristics of the voltage transformer with the new three-cylinder core structure was carried out. Compared with the traditional three-column core structure TPTC transformer, the magnetic induction intensity distribution of the voltage transformer with the new three-cylinder core structure is more uniform. The simulation results of the voltage error characteristics under normal load condition also show that with the increase in voltage, the voltage error of the voltage transformer with the three-cylinder core structure changes gently, and the error difference between the three phases is smaller. The TPTC combined transformer with the new three-cylinder core structure has better error characteristics under normal load conditions.

中文翻译：

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新型三筒铁心结构三相三元件组合变压器磁场分布及电压误差特性仿真


传统三柱铁心结构三相三元件（TPTC）变压器的缺点是其不完全对称、磁路长度和耦合参数不同，导致各相电压误差变化不同。本文提出了一种新型三筒铁芯结构的新型三相三元件组合变压器的结构优化设计。对新型三筒铁心结构电压互感器的磁场分布和电压误差特性进行了仿真分析。与传统三柱铁心结构TPTC变压器相比，新型三柱铁心结构电压互感器的磁感应强度分布更加均匀。正常负载情况下电压误差特性的仿真结果也表明，随着电压的升高，三筒铁心结构电压互感器的电压误差变化平缓，三相间的误差差异较小。采用新型三筒铁心结构的TPTC组合变压器在正常负载情况下具有更好的误差特性。