Thanks.berkeman said:
Inrush current in a transformer chain is the surge of current that flows into the transformers when they are first energized. This high initial current is caused by the magnetizing of the transformer cores and charging of the capacitance in the system.
Inrush current in a transformer chain is a concern because it can cause voltage dips, nuisance tripping of protective devices, and damage to the transformers and other equipment in the system. It can also lead to increased energy consumption and reduced efficiency.
Inrush current in a transformer chain can be mitigated by using inrush current limiters, such as resistors, reactors, or electronic devices. These devices help to limit the peak current during startup and reduce the impact of inrush current on the system.
The magnitude of inrush current in a transformer chain is influenced by factors such as the transformer size, voltage level, impedance, and the point on the voltage waveform at which the transformer is energized. Additionally, the saturation level of the transformer cores and the presence of harmonics can also affect the inrush current magnitude.
Inrush current in a transformer chain can impact the overall system performance by causing voltage fluctuations, thermal stress on the transformers, and increased losses in the system. It can also lead to operational issues, such as equipment malfunction and reduced system reliability. Therefore, it is important to properly manage and mitigate inrush current in transformer chains to ensure the smooth operation of the system.