How can a PCS energy storage system resist strong electromagnetic interference (near a substation)?

PCS installed near strong electromagnetic environments such as substations face extreme radiated and conducted interference, necessitating enhanced anti-interference design. Measures include:

1. Highest level shielding: Cabinets must employ high shielding effectiveness (e.g., SE>60dB), using thick plates, welded joints, and rigorously treating all openings.

2. Comprehensive cable shielding and filtering: All incoming and outgoing cables must be shielded, with the shielding layer lapped and grounded at both ends. High-performance filters are installed at ports; for example, larger, higher impedance common-mode inductors (e.g., CMZ series) are used at power ports.

3. Enhanced port protection: Surge and EFT protection levels for all interfaces (power, signal, communication) must be improved, for example, using higher current-throughput MOVs and TVS.

4. Internal circuit isolation and reinforcement: Sensitive circuits use isolated power supply and signal transmission; filtering and protection are added to critical circuits such as reset and sampling.

5. Grounding system optimization: Establish an independent, low-impedance grounding grid and ensure good connection to the substation's main grounding grid to guarantee potential balance. An on-site EMC assessment may be required after actual installation.