新型叠加强励励磁回路的电磁暂态特性与励磁变压器容量分析

为了克服传统自并励励磁系统技术上的缺陷,介绍了一种新型叠加强励励磁方式,并研究了新型叠加强励励磁回路的电磁暂态特性,以及叠加强励励磁系统励磁变压器的容量问题。通过电磁暂态仿真,发现叠加强励可以使得励磁电压和励磁电流增大,并且励磁电压和励磁电流的响应速度很快。对三绕组励磁变压器和传统双绕组励磁变压器的容量分别进行了计算,计算结果表明,采用叠加强励三绕组励磁变压器可以减小励磁变压器的容量。

Analysis of electromagnetic transient characteristic of new type superposition strong excitation circuit and excitation transformer capacity

In order to overcome technical flaws of the traditional self-shunt excitation system, this paper introduces a new way of stack trengthen excitation and discusses the electromagnetic transient characteristics of the new type superposition strong excitation circuit, and calculated the excitation transformer capacity. Through the electromagnetic transient simulation, found that superimposed strong excitation can indeed make the excitation voltage and excitation current increase, and the excitation voltage response speed very quickly. Three winding transformer and traditional double winding transformer capacity were computed respectively. The calculation results shows that the superposition of strong excitation winding transformer can reduce three of the excitation transformer capacity.