The discharging curves for power frequency voltage and lightning impulse voltage are measured and its fluctuation range caused by variation of air condition is found.

该式能把工频电压和雷电冲击电压下空气隙的放电曲线箍在特定的范围内。

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In the normal fluctuation range of voltage it could realize reactive power balance basically.

在电压正常波动范围内实现无功基本平衡。

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This paper analyzes reasons, effect and allowable range of voltage fluctuation. The pape presents an example and engineering calculation methods for voltage fluctuation.

分析了大功率炼钢电弧炉电压波动和产生原因、影响及允许范，并通过设计实例介绍了电弧波动的工程计算方法及减少电压波动的措施。

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