CIGRE India Journal

TPDDL operates in an area of 510 sq. km. with fleet of nearly 120,000 maintainable electrical assets and an installed capacity of nearly 3900 MVA. A major of the O&M effort is currently under way to maintain the required asset availability but it is already clear that the average age of the asset cannot be maintained at its current level due to several constraints like financial and human resource availability limitations as also regulatory constraints. TPDDL is taking the following approaches to maintain the required electrical asset availability inthe coming years:

Gradually renewing the ageing fleet of assets in line with regulatory guidelines, starting with those whose condition is cause for concern and among them, those which are most critical to the maintenance of reliable supply to the consumer.

Key challenges being inability to monitor and respond to asset conditions in real time and planning efficient maintenance execution. Given these challenges, TPDDL is taking the following approaches to extract the most potential from aging assets while ensuring reliability and optimizing costs.

Current Approach: Preventive and Condition Based Maintenance

With a view to bring in a turnaround in commercial, operational and financial performances TPDDL went ahead with implementation of Enterprise Resource Planning (ERP) to achieve excellence in Operational activities.

This paper will elaborate on ERP based maintenance framework and algorithm for risk indexing, condition based maintenance technique deployed for reliability enhancement vis-à-vis life enhancement and utilization of critical assets.

SAP (System Application and Products in Data Processing) is the ERP implemented at TATA Power-DDL. The Plant Maintenance Module of SAP (SAP-PM) caters to the needs for its T&D maintenance and enterprise asset management purposes.