POWERGRID : Maintenance Mgmt System

Power Grid Corporation of India is one of the largest transmission utility

companies in the world. It owns and operates 58,000 circuit kms of transmission

lines of voltages ranging from 66 kV to 765 kV AC (765 kV system in operation at

400 kV) and 500 kV HVDC and 105 substations with transformation capacity of

approx. 58,000 MVA. Maintaining these huge network of transmission lines,

sub-stations, and associated systems was a mammoth task for POWERGRID. Moreover

the company was facing pressures from the regulators to maintain a high

availability and low number of trippings. Earlier planning for maintenance,

manpower, inventory, spare required great coordination among 250 maintenance

offices of POWERGRID across India.



With the manual system there was no central databank available, information was
scattered which led to weak planning. Also it was difficult for POWERGRID to do

an organization-wide trend analysis of equipment performance.

To solve these issues POWERGRID developed Maintenance Management System (MMS)

which is a web-based decision support system that connects the entire operations

and maintenance team of the company across the country. For this project

POWERGRID has used Share Point Portal technology and the portal is populated

with complete maintenance and inventory-related information which can be

accessed from any location. The portal has a master and a sub-site for every

region. For data entry, the portal has predesigned standardized user friendly

entry forms for every location. As soon as maintenance of a equipment is done,

employees are required to submit a report on this portal. All maintenance

schedules for Transmission Lines and Substations are maintained on the portal as

well. The portal also issues alert as soon as maintenance of an equipment is

due. The portal has also provided POWERGRID a collaborative platform where

employee from various locations can share their experiences and help others.

Moreover the portal serves as an organized knowledge base for the employees of

the POWERGRID.

Kumud Wadhwa Ch Manager IT

History of previous maintenance done and results of test performed are also

made available on the portal. After implementation of this project POWERGRID is

experiencing significant reduction in downtime and enhanced inventory

management. Also the portal has proved to be an effective decision support

system and the company is able to make efficient new purchases.