高压直流换流器和换流变压器的饱和特性之间的相互作用可以导致换流变压器铁心饱和不稳定现象的发生。
The interaction of HVDC converter with the saturation characteristic of converter transformer can lead to core saturation instability of converter transformer.
并基于直流输电开发研究平台，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了该方法的正确性。
Then base on the former research platform, an simulation of the core saturation instability caused by three-phase grounding fault is processed, thus the new judgment method is validated.
提出了一种判断铁心饱和型谐波不稳定的新方法。
A new method is introduced for judging harmonic transformer core saturation instability.
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