观察此长线或利用仪表来显示电流的方向和量级。
View the magnetic field lines or use a meter to show the direction and magnitude of the current.
理论分析与仿真验证都证明新原理不受长线路分布电容电流的影响，具有很高的灵敏性和可靠性。
Theoretical analysis and simulation prove that the proposed protection principle will not be affected by distributed capacity current of transmission line and has higher sensitivity and reliability.
发电机带长线路甩负荷时，因容性电流对发电机产生助磁作用从而使发电机发生自励磁和过电压。
Self-excitation and over-voltage caused by generator load rejection with long lines occurs because of the capacitive current has a function to help the magnetic excitation of the generator.
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