O&M Practices for Substation Equipment and Distribution Lines

Planned maintenance schedules for several elements of the power distribution systems are carefully drawn up through the power distribution utility even before the installation work is completed. In During plant shut-downs for whole maintenance and before re-energisation, the sub-transmission and distribution plants are subjected to certain testing and inspection procedures. This also applies to the cable route which has been de-energised for a long period of time. Such planned shut down of the plant to be tested and network reconfiguration ensure continuity of supply to consumers although the testing takes place.

The power distribution utility must formulate like planned outage schemes at various times of the year (depending upon the load demands) for various maintenance periods in such a fashion in which consumer supply is least affected. This also includes putting in place a system for handling customer complaints about power supply breakdowns.