For PCS installed near strong electromagnetic environments such as substations, an enhanced anti-interference design scheme is proposed, including the highest level of shielding, comprehensive filtering, enhanced protection, and optimized grounding. When interference enters your system, it can cause data errors, equipment resets, or even complete system failures. Sensitive devices, such as routers and switches, are especially vulnerable. A Smart Power Distribution Unit. At the nerve endings of smart grids, Power Line Carrier Communication (PLC) is infiltrating every corner in the form of "invisible blood vessels. " This technology, which utilizes existing power lines for data transmission, has become a core communication means in scenarios such as smart meters. The auto-disturbance rejection control (ADRC) system has the advantages of small overshoot and stability errors, fast response speeds, excellent anti-interference ability, and robustness.