The “Operations and Maintenance (O&M) and Asset Management” session at the Power Line TransTech India 2024 Conference and Exhibition featured presentations and remarks by Nihar Raj, Head of O&M, Adani Energy Solutions Limited; and Amitanshu Shrivastava, Head of Transmission, IndiGrid. Both sector experts shared their views on the key challenges in the O&M of transmission assets, as well as the best practices and key initiatives in this space…
Emerging O&M practices
Transmission companies are increasingly focusing on sustainable O&M, particularly with the construction and operation of high voltage networks. Significant strides have been made in operating high voltage direct current links, with several ongoing expansion projects. However, the introduction of new technologies, combined with the need to phase out obsolete systems, presents challenges to the seamless operation of these networks. To address the issues and enhance decision-making, risk predictability and asset longevity, transmission companies are leveraging data analytics and advanced technologies.
One of the key initiatives involves the incorporation of weather analytics into maintenance protocols to mitigate weather-related risks. By linking preventive maintenance activities with weather data, companies can better plan their workforce and adjust operations if conditions are unfavourable. Real-time weather monitoring solutions support effective risk management, while drone-based inspections enhance safety and predictive maintenance efforts. Moreover, the Asset Health Index Platform offers health assessments at portfolio, substation and equipment levels, allowing for more informed decision-making regarding asset management.
Reliability, robust risk mitigation plans and the adoption of digital technologies are essential for ensuring optimal asset performance. The shift toward predictive maintenance is a top-driven strategy supported by upper management in many transmission companies. This approach focuses on utilising pattern-based analysis, leveraging artificial intelligence (AI) tools and conducting studies to anticipate maintenance needs and potential failures. Moreover, the innovative “zoning” concept divides transmission lines into segments representing 10 per cent of the line’s length, allowing for performance monitoring within each zone. Issues can be identified through data visualisation tools, enabling targeted interventions based on specific problem areas. Digitalisation is being embraced for every installation, utilising supervisory control and data acquisition systems to mine data for challenges that might otherwise go unnoticed. Furthermore, centralised data on critical applications allows for early detection of anomalies in equipment, such as circuit breakers, enabling rapid corrective action.
Drones are being implemented for inspections, moving towards unsupervised learning, where drones equipped with edge devices can autonomously report detected anomalies. A novel safety feature has also been introduced – if a worker falls from a transmission tower and remains inactive for over a minute, an automatic alert is triggered to initiate help.
The O&M of transmission assets faces several challenges, including changing climate patterns, unauthorised construction beneath transmission lines, the lack of coordination in infrastructure development and frequent regulatory changes. To mitigate these challenges, transmission companies are adopting cutting-edge technologies such as AI, machine learning and satellite-based vegetation management. These tools help manage risks associated with lightning strikes and thunderstorms that can affect insulators and end equipment. Additionally, protective structures have been installed to safeguard critical transmission lines from landslides and snow avalanches.
Overall, transmission companies are actively leveraging data analytics, digital tools and predictive maintenance strategies to overcome the evolving challenges in the O&M of transmission assets. By adopting innovative technologies such as AI, drones, and internet of things-based sensors, these companies are enhancing asset reliability, improving safety and ensuring the long-term sustainability of their operations. Proper O&M practices are crucial for enhancing the overall reliability and safety of the transmission sector, ultimately contributing to a more resilient and efficient energy infrastructure. As these companies continue to refine their O&M practices, they underscore the critical role of advanced analytics and technology in promoting operational excellence and safeguarding the integrity of the transmission network.
Click to read the TransTech Special Section from the October issue.