中文摘要：

为了研究型船舶独立电力系统的电压稳定问题，将基于稳定域边界二次逼近的暂态电压分析方法应用到新型船舶独立电力系统的暂态电压稳定分析。通过建立系统暂态分析的数学模型，利用牛顿法求取故障后系统主导不稳定平衡点（CUEP），采用基于稳定域二次逼近的稳定判据，进行系统暂态电压稳定分析。同时，考虑不同故障位置对于求解CUEP过程中电动机和直流系统控制器状态量计算的影响。通过简化的新型独立电力系统模型对上述方法进行验证。研究结果表明：该分析方法能够获得暂态电压稳定裕度指标，准确判断该独立电力系统的暂态电压稳定状态。

英文摘要：

In order to study the voltage stability of new ship isolated power system （IPS）, transient voltage stability analysis method based on second-order approximation of stability boundary was applied to transient voltage stability analysis for the new isolated power system. The method modeled power system acquired controlling unstable equilibrium point （CUEP） after fault was removed by Newton iteration method. The transient voltage stability analysis could be realized by transient voltage stability criterion based on second-order approximation of stability boundary. The influence of different fault position to quantity of state calculation of motor and DC system controller was also considered. Using simplified new IPS, the correctness of the method was validated. The results show that the method can obtain transient voltage stability allowance and estimate IPS transient voltage stability state. Key words：isolated power system; transient voltage stability; stability margin; second-order approximation