Thursday, August 27, 2009

India's Power Transmission

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India's power woes do not end with generation imbalances.. the problem with electricity is that it cannot be stored.. hence the peculiar importance of POWER TRANSMISSION



Indian transmission can be divided into 3 parts:

a. inter-state transmission [220kv to 765kV]
b. sub transmission [33kV to 220kV]
c. primary transmission [below 33kV]

POWERGRID wheels about 45% of the total power generated in the country on its transmission network.POWERGRID has a pan India presence with around 71,500 Circuit Kms of Transmission network and 120nos. of EHVAC & HVDC sub-stations with a total transformation capacity of 79,500 MVA.

200 crores PAT and 2,500 crores market cap, RPGoenka's KEC International is one of the largest Power Transmission EPC companies in the world with work in India, Middle East and Africa.

90 crores PAT and 1,000 crores market-cap, this companyexecute total turnkey jobs that involve setting up both transmission lines and substations

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TRANSFORMERS
Some of the major listed TRANSFORMER manufacturers are:


BHEL
ABB
Areva
Crompton
EMCO
IndoTech
TRIL
Voltamp
IMP Powers




A transformer is a voltage changer.

Electricity is generated at 11kvA but it's uneconomical to transmit it at such low voltage. Hence you need a step up transformer and then a step down transformer once it is to be distributed to the end user.

70% of demand for transformers comes from SEBs (State Electricity Boards) and balance 30% from private industries/ large factories









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Power Cables

Conductors are bare open non-insulated cables which are used to wheel high tension power.

Power cables are high tension, medium tension and low tension.

Cable market is largely divided into two types of users: Industrial and Domestic.

Cables are sold in kilometres.
In the case of a cable manufacturer, the metal drawing capacity determines the capcaity utilisation.
Contracts of power cable do not have price escalation clause.
Copper, aluminium & PVC are main input costs.

Havells



KEI


Paramount


Finolex




Cords Cable



RPG

Torrent Cables



Universal Cables

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