This paper gives a complete plan for sending data safely in automatic substations. It does this by handling the problems that come up with smart grids becoming more and more connected between computers and the real world. Protocol manipulation, fake data input, and continuous attacks are some of the more advanced threats that traditional security measures can’t stop.  Strong security methods, identity protocols, and failover models are all part of the suggested framework. It is scalable, reliable, and flexible. Under hostile conditions, mathematical formulas prove privacy, availability, and honesty. Experiments show that the system is very good at detecting threats, recovering quickly, and being available most of the time, which makes it resistant to big attacks. The framework improves trust, operating dependability, and long-term safety in important power systems.