Study on calculation method and simulation software of the electromagnetic environment of the substation’s key equipments

The electro magnetic compatibility (EMC) is serious in the substation, so studying the electromagnetic environment of the key equipment in the substation is very important. We introduce the simulation and calculation of the power-frequency electromagnetic fields of bus and lines between equipments, transient high-frequency electromagnetic fields of the key equipment during switch operation or over-voltage, then we can take protective measures for the EMC.