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Cemig and Huawei's Groundbreaking Partnership in Brazil

In a significant move for Brazil's energy sector, Cemig, a leading power utility, has announced a collaboration with Huawei to deploy the first commercial private wireless network operating in the 450 MHz band in Latin America. This initiative comes as the complexities of managing distribution networks increase, presenting both challenges and opportunities for innovation.

The Necessity for Change

Historically, Cemig relied heavily on leased communication channels from public networks to transmit data from distribution network equipment. However, this model posed various risks, including:
1. Network Coverage Gaps: In Brazil, mobile operators' network coverage is around 50%. Numerous distribution network devices located in remote and sparsely populated areas were often out of range, resulting in delayed response to faults and significant operational inefficiencies.
2. Reliability Issues: The service level agreements (SLAs) provided by public networks did not accommodate the specific needs of energy distribution operations. During the rainy season, adverse weather frequently disrupted base station services or interrupted microwave link communications, reducing the connectivity of distribution devices from 90% to nearly 60%. Consequently, remote control commands failed to reach equipment, necessitating manual interventions by personnel, extending outage times and affecting service reliability.

These challenges underscored the critical need for a dedicated and reliable communication framework.

The Innovative Solution

To address these issues, Cemig conducted a thorough technical assessment and studied international best practices. The decision was made in favor of partnering with Huawei to launch a dedicated private wireless network that promises to revolutionize operational capabilities in the electrical sector. This decision was bolstered by real-field trials, where Cemig witnessed firsthand the benefits of implementing such a network.

Huawei proposed a solution that not only addressed Cemig's current network modernization requirements but also included scalability for future renewable energy integrations. This partnership is not merely technological; it is also strategic for the long-term growth and sustainability of Cemig.

Tangible Benefits of the Deployment

The private wireless network is expected to yield multiple advantages, including:
1. Enhanced Supply Reliability: With the private network, connection rates for distribution devices will reach 99%, leading to a remarkable 99.99% reliability in communication. This improvement ensures a higher quality of service in electricity distribution.
2. Risk Mitigation: The wireless network will significantly decrease electricity loss in transmission lines and improve reliability metrics such as SAIDI and SAIFI, enabling Cemig to avoid regulatory penalties.
3. Return on Investment: The investment in this network aligns with the regulatory requirements of Brazil’s National Agency of Electric Energy (ANEEL), offering favorable ROI prospects for Cemig.
4. Operational Advancements: The new network will provide the foundational communication infrastructure necessary for advanced automation processes, facilitating smooth interactions between power sources, electric grids, consumers, and energy storage systems.

Conclusion

This move by Cemig and Huawei not only enhances the operational efficiency of energy distribution in Brazil but also marks a significant step towards modernizing energy infrastructure in the region. By adopting cutting-edge technology, they aim to transition from traditional power generation models towards dynamic systems that support sustainable energy initiatives.

For more details, visit the Huawei Case Study.