CHAPTER VII

ENERGY CONSERVATION

10700 Monitoring of Energy Conservation

1. The Staff connected with electric traction shall make every effort to avoid wastage in use of electricity through constant vigil.

2. One Senior Administrative Grade Officer of Electrical Department shall be nominated by Chief Electrical Engineer to be incharge of matters pertaining to Energy Conservation. The officer shall :

Monitor pattern of consumption of electrical energy on electrified divisions based on the reports from Divisions:

Plan for Energy Conservation measures and monitor their implementation; 

Provide guidance to Divisional Officers; 

Arrange for training of officers and supervisors; 

Discharge other related functions.

3. Sr. DEE (Tr D) and Sr. DEE (OP) shall hold monthly meetings to analyze energy consumption and maximum demand for the preceding month vis--vis earlier months. The figures should have a relation to the traffic moved. In the event of maximum demand and energy consumption being found disproportionately high, a detailed investigation should be made and corrective action, if any, should be advised to concerned departments.

10701 Energy Conservation Measures

While development of better designs and use of energy efficient equipment will bring about reduction in energy consumption, yet on the existing systems the following measures listed below will contribute to conservation of electrical energy in traction. While working to these recommended measures no compromise shall be made with the safe and reliable operation of equipment and train services.

10702 Energy Conservation Measures for Traction Installations

1. Shunt capacitor banks shall be provided at traction sub-stations, where not done, to reduce maximum demand and line losses. Priority should be given to the sub-stations feeding large marshalling yards.

2. Standby traction transformers should be kept de-energized to save on no load losses.

3. Demand monitoring equipment, wherever provided, shall be maintained in the working order.

4. Traction Power Controller should co-ordinate with the Section Controller to avoid simultaneous starts of trains, as far as practicable. Bunching of the train in the event of breakdown has to be avoided to the extent feasible.

5. Wherever standby emergency power supply is also derived from OHE, the associated auxiliary transformer should be kept isolated from 25 kV side to avoid no load loss. This, however, shall not be applicable for power supply to signals where changeover has to be immediate.

6. Ensuring of good electrical contact to attain low resistance at conductor joints (splices) and parallel groove (PG) clamps through periodical inspection and maintenance.

7. Connections to buried rail opposite sub-stations for return current are prone to corrosion leading to increased resistance and loss of energy. These connections should be inspected periodically and maintained to obtain good electrical connection.

10703 Energy Conservation Measures for Rolling Stock

1. Drivers/Motormen are expected to be well - conversant with the road to make the best use of down gradients to effect maximum possible saving in energy consumption.

2. In level sections and particularly in suburban sections, coasting should be resorted to as much as possible and brake applied only when essential to control the speed or stop the train. To help Drivers and Motormen "Coasting Boards" are fixed at appropriate points on suburban sections. In some Railways, time totalizes have been provided in EMUs.

3. In the undulating terrain, speed may be allowed to drop down when going up a short up-gradient. After passing over the crest, the train will automatically pickup the speed with power off when going downhill, so that it attains maximum permissible speed on the section when it arrives at the foot of the next up-gradient. This feature should receive special emphasis during learning the road period.

4. Re-scheduling of booked speed of EMU to help conservation of energy.

10704 Energy Conservation Measures for Maintenance Installations

1. Switch off lights, fans and air conditioners when not required.

2. Keep standby transformers deenergized from HV side.

3. Check idle running of machines.

4. Check' leakage and misuse of compressed air.

5. Check leakage and wastage of water.

6. Maximise use of natural day light in service building to reduce need for electric light.

10705 New Developments

1. The traction staff should keep themselves fully abreast of technological developments like 3 phase drive Electric locos being made elsewhere, within the country and abroad, in respect of efficient utilization of electric power in traction applications and try to derive benefits from such developments.

2. Electric locomotives simulator : Training of Drivers on simulator can help drivers in running of trains with optimum consumption of energy.

3. On Board Power factor correction Equipment on Electric Locomotive.