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三相负荷不平衡对线损的影响有多大

2025-04-02 01:02:43

推荐回答（1个）

回答1：

理论上三相对称负荷时，零线电流等于零。其在线路上的损耗计算公式:有功损失p=3i2r，三相不平衡负荷时零线有电流通过，其计算公式:
p=ia2r+ib2r+ic2r+in2r，因此当负荷不对称时线损将增大。

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