Internship
DAY 1 (20/05/2013)
AIS- air insulated substation.
GIS- gas insulated substation.
Delhi Transco Limited(DTL), 220kV Mehrauli is an AIS, whereas the one in park street houses both AIS and GIS. The one situated in I.P.Estate, Ring road contains generation sector along with an AIS.
An electricity board generally constitutes of three modules: Generation, Transmission and Distribution.
The state electricity board of Delhi was broken into the above segments in 2002. Generation went under several corporations like IPGCL, BTPS etc. Transmission came under DTL, and Distribution was controlled by BSES (Rajdhani, Yamuna, NDPL).
An Electricity Act was introduced in 2003 for reasons of increased control and reduced theft. This act required each state to modulate its electricity board into the above mentioned components.
Generation sector is usually located away from cities and towns, mainly due to availability of resources, whereas the user/consumer is situated inside the city/town. Here starts the work of power transmission.
To reduce the losses (heat losses mainly), transmission is generally done at high voltages only (220 kV, 400kV, 132kV). Even 765kV transmission has been achieved at some places.
Generation voltage can be as high as 11 kV due to the some constructional constraints of the armature of the generator.
The main idea of transmission is to transfer the power generated almost to the consumer at high voltages only, so that minimum transmission losses takes place, and also the matter of theft is solved too to some extent(maximum transmission losses are around 2-3%).
DTL hand over the power to BSES at 66kV. BSES now takes the responsibility of distributing this power to the consumer.
The role of the DTL is very critical since it cannot afford to experience any faults, cause that would end up affecting a very large area, and Delhi being the capital city should not be having any such power outages.
The handling of high voltages also require more preventive
AIS- air insulated substation.
GIS- gas insulated substation.
Delhi Transco Limited(DTL), 220kV Mehrauli is an AIS, whereas the one in park street houses both AIS and GIS. The one situated in I.P.Estate, Ring road contains generation sector along with an AIS.
An electricity board generally constitutes of three modules: Generation, Transmission and Distribution.
The state electricity board of Delhi was broken into the above segments in 2002. Generation went under several corporations like IPGCL, BTPS etc. Transmission came under DTL, and Distribution was controlled by BSES (Rajdhani, Yamuna, NDPL).
An Electricity Act was introduced in 2003 for reasons of increased control and reduced theft. This act required each state to modulate its electricity board into the above mentioned components.
Generation sector is usually located away from cities and towns, mainly due to availability of resources, whereas the user/consumer is situated inside the city/town. Here starts the work of power transmission.
To reduce the losses (heat losses mainly), transmission is generally done at high voltages only (220 kV, 400kV, 132kV). Even 765kV transmission has been achieved at some places.
Generation voltage can be as high as 11 kV due to the some constructional constraints of the armature of the generator.
The main idea of transmission is to transfer the power generated almost to the consumer at high voltages only, so that minimum transmission losses takes place, and also the matter of theft is solved too to some extent(maximum transmission losses are around 2-3%).
DTL hand over the power to BSES at 66kV. BSES now takes the responsibility of distributing this power to the consumer.
The role of the DTL is very critical since it cannot afford to experience any faults, cause that would end up affecting a very large area, and Delhi being the capital city should not be having any such power outages.
The handling of high voltages also require more preventive