In such cases, a two tapped Petersen coil is enough for automatic adjustment to ensure over-compensation to the network. For the networks with capacitive current greater than 100A, the Petersen coil s should consist of a fixed part and an auto-tuned part. 对于电容电流大于100A的电网,消弧线圈由固定容量和自动调谐两部分组成。