中文摘要：

结合风电场的特点,推导了风电场送出线和常规能源送出线非全相运行时健全相电流表达式,研究了风电场和常规能源健全相电流的差异。在此基础上研究了风电场、常规能源送出线非全相运行时潜供电流的特点。研究结果表明风电场在送出线非全相运行时,由于风电场的正、负序阻抗远大于零序阻抗,其健全相电流大于常规能源的健全相电流,引起潜供电流较常规能源增大。在PSCAD中仿真分析了风电机组类型、风电场出力以及投运机组数对送出线非全相运行时健全相电流和潜供电流的影响。

英文摘要：

The current formula of sound phase is derived based on the characteristics of wind farm when its outgoing lines operate in incomplete-phase mode,which is compared with that of traditional power source.The characteristics of the secondary arc currents of outgoing lines are then researched for both wind farm and traditional power source. Results show that,when the outgoing lines of wind farm operate in incompletephase mode,its sound phase current is larger than that of traditional energy source because its positive-sequence and negative-sequence impedances are larger than its zero-sequence impedance,which then makes its secondary arc current larger than that of traditional energy source. The effects of the wind-power unit type,the wind farm power output and the amount of its operating units on the sound phase current and secondary arc current during the incomplete-phase operation of its outgoing lines are simulated in PSCAD.