中文摘要：

潜供电弧零休即潜供电流过零阶段的电弧恢复电压上升率是影响潜供电弧熄弧与重燃的重要因素。以单相接地故障为例，将故障发展过程分为4个阶段并建立相应的电路模型，在每个阶段针对影响恢复电压上升率的因素做了定性分析。针对特高压输电线路进行了仿真计算，得出的结论是：潜供电流不同过零时刻与故障时刻、跳闸时间、短路电弧电阻等因素一样，在燃弧的初始阶段，对恢复电压上升率有较大影响，后期则几乎没有影响，而且随着时间的延长，恢复电压上升率有减小的趋势并最后趋于稳定。而故障点位置对恢复电压上升率的影响，则呈现出线路两端故障时恢复电压上升率大，线路中点位置时最小的V型曲线；随潜供电弧电阻的增加和并联补偿度的减小，恢复电压上升率呈现出增加的趋势；并联电抗器中性点小电抗不仅对恢复电压上升率产生影响，同时也对潜供电流、恢复电压产生影响，均表现出V型曲线的影响规律，且当中性点小电抗取值能够实现完全补偿时上述三者有最小值。

英文摘要：

The rising rate of recovery voltage （RRRV） of secondary arcs during the zero-crossing stage is an important parameter influencing the secondary arc＇s extinguishing and restriking characteristics. Therefore, taking single-phase to ground fault in transmission system as an example, we divided the process of the fault into four stages. For each stage, equivalent circuits were established, respectively, and the factors affecting the RRRV were analyzed qualitatively. Moreover, we simulated an ultra-high voltage （UHV） transmission line. Conclusions are drawn as follows： the zero-crossing time of secondary arc current, the fault time, the trip time, and the resistances of short-circuit arc remarkably affect RRRV in the initial stage of the arc, but hardly affect RRRV in the later stages; as time goes on, the RRRV decreases and eventually tends to be fixed. The effect of fault location on RRRV can be described as a V-shaped curve, i.e. the RRRV is larger while the fault point is at either ends of the line before it reaches its minimum while the fault locates in the middle of line. The RRRV increases with increasing arc resistance and decreasing parallel degree of compensation. If the inductance on neutral of shunt reactor is small, it impacts not only the RRRV, but also the recovery voltage and the secondary arc current, and this impact also shows a V-shaped curve. The RRRV, the recovery voltage, and the secondary arc current have their minimums when the neutral inductance realizes complete compensation.