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电网技术  2011 

变压器铁心剩磁估量

, PP. 169-172

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Abstract:

实现同步关合技术的关键是有效预估变压器分闸后铁心中的剩磁,提出了一种变压器铁心剩磁估量方法,依据变压器空载合闸后在变压器一次侧检测到的电压电流数据和空载合闸角,寻找变压器的铁心饱和时刻,估量变压器分闸后铁心中的剩磁。通过实验室物理模型就变压器空载合闸进行了数百次实验,依据变压器铁心饱和后的电压电流数据和空载合闸角对变压器铁心剩磁给予了估量。基于变压器铁心剩磁估量的结果,获取了变压器分闸角与变压器铁心剩磁的关系特性。

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