There is very good scope for saving Energy in Industrial Electrical Systems if proper steps are taken.

Firstly, attempt must be made to understand the power consumption pattern.

After having understood the power consumption pattern, analyse the consumption pattern and identify points of wastage, and take suitable steps to avoid this wastage by fitting suitable energy saving devices.

Provide necessary instruments for monitoring the performance of all major load points, individual motors, individual transformers etc. to monitor the consumption.

Provide separate lighting transformer for control of lighting systems.

Avoid idle running of motors/machines.

Locate substation near the load centres to minimize energy losses in cables and also improve voltage levels.

Install capacitors with automatic power factor control panel to maintain a power factor of not less than 0.9. Install capacitors near the load points wherever possible or at the sub distribution board. The best practical method would be to intall capcitors at larger capacity motors and at the substation for all other loads.

Identify underloaded motors and examine the possibility of replacing them with the appropriate capacity motor or altenatively fix retrofitting devices that are available to save energy.

Identify under-loaded transformers and redistribute the load to achieve optimum loading conditions.

Select and use energy efficient motors and transformers having less losses, for new installations. Where it is economical, it is worthwhile replacing the existing motors/transformers.

Incorporate warning system in the maximum demand indicator so as to take steps to keep the same within the allowed limit.

Transfer the operation of high capacity loads to lightly loaded shift hours to reduce maximum demand to flatten the load curve and maintain a high load factor.

Stagger starting and operation of high capacity motors.

Balance the loads on all three phases within ± 1%, as voltage imbalance results in higher losses.