The digital transformation of substations is completely redefining traditional concepts of protection, control, and automation in the power industry. Among the most innovative architectures in this scenario is Centralized Protection and Control (CPC), which proposes a more integrated, intelligent, and efficient approach to operating power systems.

During the CONPROVE Workshop, Julio Oliveira, from Hitachi Energy, presented the practical experience of the ISA-CTEEP Jaguariúna Project, demonstrating how CPC architecture is being applied in modern digital substations.

The project highlights not only the technological advances enabled by IEC 61850 networks but also the operational, structural, and functional benefits that centralized protection and control can provide.

What is Centralized Protection and Control (CPC)?

Traditionally, protection and control systems are distributed among multiple IEDs installed close to bays and substation equipment.

In a CPC architecture, part of these functions is centralized on high-performance computing platforms, enabling:

Greater integration between functions
Reduced distributed hardware
Simplified architecture
Improved data management
Greater operational flexibility

This approach leverages the full potential of IEC 61850-based digital substations.

The Evolution of Digital Substations

Digital substations are replacing conventional analog connections with high-speed Ethernet communications using protocols such as:

GOOSE
Sampled Values
MMS
PTP

This transformation has enabled:

Significant wiring reduction
Greater interoperability
Advanced diagnostics
Easier expansion
Real-time monitoring

CPC emerges as a natural evolution of this digitalization process.

The ISA-CTEEP Jaguariúna Project

During his presentation at the CONPROVE Workshop, Julio Oliveira detailed the implementation of the CPC concept at the ISA-CTEEP Jaguariúna substation.

The project demonstrated practical applications involving:

Centralized protection architecture
Control system integration
Communication flows to SCADA systems
PTP synchronization
Optimization of control room space

The experience shows how modern digital architectures are changing the way substations are designed and operated.

Protection and Control Flows to SCADA

One of the topics addressed was the integration of protection and control systems with the SCADA environment.

In CPC architectures, data flows become highly integrated, enabling:

Faster supervision
Centralized event management
Improved operational management
Greater information availability
More efficient diagnostics

IEC 61850 plays a fundamental role in ensuring interoperability among the devices involved.

Reduced Control Room Footprint

Another important benefit presented was the significant reduction in the physical infrastructure required within control rooms.

Function centralization provides:

Fewer panels
Reduced wiring
Space optimization
Simplified maintenance
Better operational organization

This advantage becomes especially valuable in substation modernization and expansion projects.

The Importance of PTP Synchronization

Accurate synchronization is one of the cornerstones of modern digital substations.

The presentation also highlighted the use of PTP (Precision Time Protocol), which is essential for:

Sampled Values synchronization
Event timestamp accuracy
Device coordination
Operational reliability

In CPC architectures, synchronization precision directly impacts centralized protection and control performance.

Challenges of Centralized Architectures

Despite its many advantages, CPC adoption also introduces new technical challenges:

Greater dependence on communication networks
Requirement for highly reliable networks
Advanced redundancy requirements
Cybersecurity concerns
IEC 61850 traffic diagnostics
Continuous network supervision

These factors require specialized tools for testing, monitoring, and validating digital architectures.

The Role of IEC 61850 in Centralization

IEC 61850 is the technological foundation that enables CPC architectures.

It provides:

Communication standardization
Data modeling
Interoperability
Real-time communication
Multi-vendor integration

Without this standardization, achieving the integration levels required by modern digital substations would be impossible.

The Future of Digital Substations

Industry trends point toward:

Greater centralization
Increased virtualization
Advanced data integration
Fully digital process buses
Software-driven operational intelligence

The CPC concept represents one of the most significant steps in this evolution.

CONPROVE Workshop: Sharing Real-World Power Industry Experiences

The CONPROVE Workshop brings together specialists, manufacturers, and power industry professionals to discuss real applications, technology trends, and practical experiences related to automation and protection systems.

The presentation of the ISA-CTEEP Jaguariúna Project reinforces the importance of knowledge sharing for the continued evolution of digital substations.