Because the clamp effect of DC voltage source, AC side output the rectangular wave voltage waveform, and it has nothing to do with the load impedance Angle.

由于直流电压源的钳位作用，交流侧输出电压波形为矩形波，并且与负载阻抗角无关。

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Closure construction of side spans have very little effect on nonlinearity, so effects of nonlinearity can not be considered in these load cases.

边跨合拢阶段对非线性的影响非常小，在这几个工况可以不考虑非线性的影响。

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Closure construction of side spans and the remove of crane have very little effect on nonlinearity, so effects of nonlinearity can not be considered in these load cases.

边跨合龙阶段与拆除吊机阶段对非线性的影响非常小，在这几个工况可以不考虑非线性的影响。

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