Substation digitalization

Operators today are confronted with escalating challenges, including aging infrastructure, a blend of equipment generations, increasing load volatility due to renewables, heightened expectations for transparency, reliability, and safety, as well as rising demands for cybersecurity and regulatory compliance. These complex factors render manual processes and fragmented systems inadequate. By implementing substation digitalization, operators gain continuous awareness, predictive insight, and coordinated control, which collectively help mitigate risks and reduce the likelihood of outages.

Transformers are critical to substation stability, and their health directly affects grid performance. Online monitoring provides continuous insight into key parameters such as:

• Thermal behavior and hotspot temperature
• Mechanical condition and vibration
• Electrical stress and partial discharge
• Chemical indicators like moisture or DGA values

This intelligence enables early detection of age-ingrelated issues, supports predictive maintenance, and reduces unplanned outages—aligning with Noedra Node’s goal of turning transformer data into operational foresight.

Siemens Energy provides vendor-agnostic, future-ready solutions for substation modernization—combining sensors, analytics, control systems, SCADA/HMI, PAC engineering, and integration services within the Noedra Node suite. This ensures:

• Secure, interoperable system design
• Faster project delivery
• Reduced operational complexity
• Longterm resilience and lifecycle support

Whether upgrading transformers, switchgear, SCADA, or entire PAC architectures, Siemens Energy delivers a comprehensive pathway from strategy to execution.

The process bus replaces traditional copper wiring with high-speed fiber-optic communication, allowing for digital acquisition of current and voltage data through merging units. This leads to less wiring, fewer engineering errors, enhanced signal quality and synchronization, and a scalable, modular architecture that meets future grid requirements. The Noedra Node suite delivers this streamlined, intelligently coordinated substation solution—making it easier to manage, maintain, and expand your digital substation for years to come.

Digital substations are required to meet more rigorous cybersecurity standards as grid connectivity continues to increase. The Noedra Node suite features an integrated digital layer that ensures secure communication among PAC, SCADA, and field assets. It also enhances access control and data governance, making it easier to comply with regulatory frameworks like NERC CIP or EU NIS. Additionally, it helps reduce vulnerabilities typically associated with legacy hardware and gaps in patch management. These capabilities support sustainable, future-ready operations that align with current regulatory expectations.