#Huawei #Brazil #Johannesburg #CEMIG #450MHz

Introduction

In an era marked by the increasing complexity of distribution network services, Cemig has taken a significant step forward by partnering with Huawei to implement a groundbreaking 450 MHz private wireless network. This initiative is particularly timely given the challenges faced by energy distribution, especially in Brazil, where a significant amount of distribution equipment relies on leased public networks for data backhaul.

The Challenges with Current Systems

Cemig's reliance on public networks has been fraught with risks due to several pressing issues:

• - Coverage Gaps: The coverage provided by mobile operators in Brazil is approximately only 50%. Many distribution devices situated in remote and underserved areas frequently find themselves without communication coverage for extended periods. This lack of connectivity can lead to prolonged delays during faults and require personnel to travel considerable distances for maintenance and inspections, severely impacting operational efficiency.
• - Unreliable Networks: The service level agreements (SLAs) for public networks were not designed to support the specific needs of electricity networks. Particularly during the rainy season, adverse weather conditions can lead to frequent disruptions of base stations or microwave links. The connectivity rate for distribution devices can plummet from 90% to around 60%, hindering remote control commands.

Thus, the interruption in communications necessitates on-site manual operations by personnel, significantly delaying power restoration and reducing reliability, leading to substantial economic losses.

Collaborating with Huawei

To address these challenges, Cemig undertook comprehensive technical evaluations and global case studies. Huawei was ultimately selected as the strategic partner for the rollout of Latin America's first commercially viable private wireless network in the energy sector operating at 450 MHz.

Benefits of the Private Wireless Network

Following extensive field tests, Cemig has experienced firsthand the numerous benefits conferred by the private wireless network:
1. Improved Power Reliability: With the implementation of the private wireless network, terminal connectivity has surged to 99%, with communication reliability reaching an impressive 99.99%. This enhancement marks a significant improvement in Cemig's electricity distribution service levels.
2. Mitigated Business Risks: The network effectively reduces line losses, along with SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index), thus helping Cemig avoid regulatory penalties.
3. Guaranteed Investment Returns: The network boosts energy service delivery, ensuring compliance with ANEEL’s regulations while providing favorable returns on investments.
4. Expansion of Core Production Applications: As a fundamental communication infrastructure for energy production operations, the network facilitates reliable last-mile connectivity for today's distribution automation. Moreover, it is poised to support future core applications, including mass integration of smart meters, rapid adoption of distributed photovoltaics, and complex microgrid management, facilitating the transition from conventionally managed energy generation to dynamic interactions among sources, grids, loads, and storage.

Conclusion

This collaboration between Cemig and Huawei illustrates a robust commitment to modernizing energy distribution and increasing efficiency in Brazil's energy sector. The joint venture is expected to normalize high-quality communication networks that are critical for the future of energy management and sustainability in the region. For more insights, visit Huawei's case study page.

As global energy demands intensify, innovations like the Cemig-Huawei network will play a vital role in ensuring reliable and sustainable energy solutions across challenging terrains.