Discharge in dielectric liquid is an active field of research involved in many technological applications. Such multiple discharges are often applied during an experiment and that the electrode and liquid are altered by these stochastically behaving discharges. Therefore, it is important to address the variation of discharge characteristics as a function of discharge occurrence. In this study we analyze the electrical characteristics of multiple discharges run at low repetition rate (5 Hz) in a liquid of known initial composition using an electrode with a specific geometry. The discharges are run continuously until they fail to occur due to the increase in gap distance, and the recorded voltage and current waveforms are processed using an algorithm in order to determine the probability of discharge occurrence, breakdown voltage, discharge current, and discharge delay. The injected charge and energy of each discharge are also calculated. Furthermore, the effects of applied voltage, pulse width, electrode configuration, and liquid composition on the characteristics of the discharge are investigated. The obtained results demonstrate that the highest and lowest numbers of occurred discharges are achieved using the plate-to-plate and pin-to-pin configurations, respectively. Moreover, the composition of the liquid has an appreciable effect on the discharge current, as well as on electrode erosion. For discharges in water and cyclohexane, we measured the lowest and highest current, respectively. As for the erosion rate, it was comparable for the three liquid hydrocarbons but relatively smaller than that in water. The plot of breakdown voltage as a function of discharge current varies depending on the discharge parameters and displays regions that may be linked to the ignition mechanisms. The original data reported herein is of great significance for various applications that utilize repetitive discharges in liquid.

介电液体中的放电是一个活跃的研究领域，涉及许多技术应用。在实验期间经常应用这种多次放电，并且电极和液体被这些随机行为的放电改变。因此，重要的是解决作为放电发生的函数的放电特性的变化。在这项研究中，我们使用具有特定几何形状的电极分析了在已知初始成分的液体中以低重复率 (5 Hz) 运行的多次放电的电气特性。放电持续进行，直到由于间隙距离的增加而无法发生为止，并且使用算法处理记录的电压和电流波形以确定放电发生的概率、击穿电压、放电电流、和放电延迟。还计算每次放电的注入电荷和能量。此外，还研究了施加电压、脉冲宽度、电极配置和液体成分对放电特性的影响。获得的结果表明，分别使用板对板和针对针配置实现了最高和最低数量的放电。此外，液体的成分对放电电流以及电极腐蚀有明显影响。对于水和环己烷中的放电，我们分别测量了最低和最高电流。至于侵蚀率，三种液态烃的侵蚀率相当，但比水中的侵蚀率要小。作为放电电流函数的击穿电压图根据放电参数而变化，并显示可能与点火机制相关的区域。本文报告的原始数据对于利用液体中重复排放的各种应用具有重要意义。