The surges, noises, and harmonics that can occur in ESS (Energy Storage System) batteries are mainly as follows:

It is caused by influence.

Surge : High voltage surges can occur due to the switching operation of protection devices in the power conversion unit (PCS) of ESS or battery system, or external factors (e.g. lightning). This can weaken the insulation strength of the system or cause damage.

Noise : Electromagnetic interference (EMI) or radiated electromagnetic waves generated during the power conversion process of ESS can affect the battery management system (BMS) and communication devices. This can cause communication errors or malfunctions in the control system.

Harmonics : Harmonics generated in the power conversion unit (PCS) of the ESS can cause power quality degradation.

This will affect the efficiency of the battery and may cause a decrease in the performance of the system in the long run.

To prevent these problems, it is important to install EMI filters, surge protection devices (SPDs), harmonic filters, etc., and to continuously monitor the insulation status of the system (IMD Monitoring).