India: Electricity theft & inferior equipment?

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Are these admissions of electricity theft in India?
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http://www.guardian.co.uk/global-development/poverty-matters/2012/aug/01/india-power-struggle

Transmission losses are huge: some result from ageing infrastructure, but many
are due to electricity theft by
politically connected individuals who give away electricity cheaply, or even for
free, in return for votes. Customers
who fail to pay bills on time not least state-owned companies are another
culprit.

And Inferior equipment?
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http://www.brisbanetimes.com.au/opinion/politics/indias-disastrous-blackout-is-a-sign-of-wider-power-failure-20120802-23iad.html

Serious allegations of corruption resulting in inferior equipment being bought,
including high-voltage switch gear and
protection devices, have surfaced in the past.

The authorities have also been blamed for the hasty implementation of unproven
and unreliable technology across the
national grid. As usual, the government dismissed all criticism.

But now that the skeletons are tumbling out of the cupboard, it is time the
policymakers handled the entire issue in
disaster management mode.


--
Don McKenzie

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Re: India: Electricity theft & inferior equipment?

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including high-voltage switch gear and
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and unreliable technology across the
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In an electric system, the production must be exactly as large as the
consumption (+losses). When the consumption increases, the production
should increase by the same amount. Failing this, the generator speed
will drop, dropping the network frequency and finally the frequency
protection in each generator will disconnect the generator from the
network. With tripping generators, large unexpected currents will flow
in interconnects, finally tripping the line, causing even higher
currents in remaining interconnects...

If load shedding is not performed quickly, more and more generators
and interconnect will trip, causing a constantly spreading network
crash.

Reading between the lines, it appears as if the regions refused to
drop loads, hence the blackout was spreading all over the country.

To start a dead network, typically a hydroelectric power plant is spun
to nominal speed, some local load added, then the next generator is
synchronized to this local network and local load is added to it. This
procedure is repeated, until all generators and loads are on-line
again. This can take quite a while to spin out some power plants, a
SCRAMed nuclear power plant can take a day or two.
 

Re: India: Electricity theft & inferior equipment?


snipped-for-privacy@downunder.com schrieb:

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Hello,

the problem is to add the locals loads gradually and to avoid overloads
during that procedure. All refrigerators and airconditions on the dead
network will start immediately if power ist restored.

Bye


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