Tariff of Electricity in India _ Electrical Engineering
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7/30/2019 Tariff of Electricity in India _ Electrical Engineering
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8/30/13 Tariff of electricity in India | Electrical Engineering
www.electrical4u.com/tariff-of-electricity-in-india/
Prevous .....................
Ionization Process
Ohm's Law
Resistances in Series and Parallel
Coulomb's Law
Static Electric Field
Electric FluxGausss Theorem
Working Principle of Potentiometer
Electrical Power Factor
Tariff of Electricity in India
Fleming Left and Right Hand Rule
Lenz Law of Electromagnetic Induction
Faraday Law of Electromagnetic Induction
RL Circuit
RL Series Circuit
RL Parallel Circuit
Tariff of electricity in India
Recommend this on Google
Tariff refers to the amount of money the consumer
has to pay for making the pow er available to them
at their homes. Tariff system takes into account
various factors to calc ulate the total cost of the
electricity.
Before unde rstanding tariff of electricity system
in detail a slight overview of the entire power
system structure and hierarchy in India would bevery fruitful. The electrical power system mainly
consists of generation, transmission and
distribution. For generation of electrical pow er we
have many PSUs and private owned
generating stations (GS). The electrical
transmission system is mainly carried out by
central government body PGCIL(Power grid
corporation of India limited). To facilitate this
proce ss, India is divided into 5 regions :
Northe rn, Southern, Easte rn, Western and
North easte rn region. Further within ev ery
state we have a SLDC (state load dispatch
centre).The distribution system is carried out
by many distribution companies (DISCOMS)
and SEBs (State e lectricity b oard.)
Types:There are two tariff systems, one for the
consumer which they pay to the DISCOMS and
the other one is for the DISCOMS which they
pay to the generating stations.
Electrical Drivesiemens.co.in/Drive-Technologies
Siemens offers energy-efficient motors for a wide range of uses.
Electrical EngineeringThis is an online electrical engineering study site
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8/30/13 Tariff of electricity in India | Electrical Engineering
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RLC Circuit
Series RLC Circuit
Parallel RLC Circuit
Resonance in Series RLC Circuit
Complex Power
Resistor
Vector Algebra
Single Phase Power
Single Phase Power Equations
Reactive Power
Three Phase Power
Seebeck Effect and Seebeck Coefficient
Varistor
Voltage Divider
Kelvin Bridge
Let us first disc uss abou t the tariff of
electricity for the consumer i.e the cost
consumer pay to the DISCOMS. The total cost
levied o n the c onsumer is divided into 3 parts
usually referred as 3 part tariff system.
Total cost of electrical energy = fixed cost
+semi fixed cost + variable cost = (a + b*KW
+c* KWh ) Rs.
Here a = fixed co st inde pendent of the
maximum demand and actually energy
consumed. This cost takes into account the
cost of land, labor, interest on capital cost,
depreciation etc.
b = constant which when multiplied by
maximum KW demand gives the semi fixed
cost. This takes into acc ount the size of powe r
plant as maximum de mand determine s the size o f pow er plant.
c = a constant which w hen multiplied b y by actual energy c onsumed KWh gives the running cost. This
takes into acc ount the c ost of fuel consumed in producing power.
Thus the total amount paid by the consumer depends on its maximum demand, actual energy
consumed plus some co nstant sum of money.
Now elec trical ene rgy is generally expresse d in terms of unit, and 1 unit = 1KWhr (1 kw of power
consumed for 1 hr ).
IMPORTANT : A ll th ese costs are calculate d
on active power consum ed. It is mandatory
for th e consum er to m ain tain a power
factor of 0.8 or above otherwise pen alty is
levied on them depending on the deviation.
Let us now disc uss about the tariff system existe nt
in India for the DISCOMS. It is regulated by CERC
(central electricity regulatory commission). This
tariff system is called Availability based tariff
(ABT).
As its name suggest it is a tariff system whic h
depends on the availability of power. It is afrequency based tariff mech anism whic h te nds to make the power system m ore stable and rel iable.
This tariff mechanism also has of 3 parts: Fixed charge + capacity charge + UI (Unscheduled
interchange).
The fixed charge is same as that discussed above. The capacity charge is for making the power
available to them and depends on the capacity of plant and the third one is UI. To understand the UI
charges let us see the mechanism.
Mec hanism o f ABT
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The Generating stations commit a day ahead abo ut the schedule po wer w hich they can provide to the
regional load dispatch c entre (RLDC).
The RLDC conveys this information to various SLDC which in turn collects the information from
various state DISCOMS about the load demand from various ty pes o f consumers.
The SLDC sends load d emand to RLDC. And now RLDC allocate s the po we r accordingly to the various
states.
If ev ery things goes well , power demand is equal to power supplied and the syste m is stable and
frequency is 50 Hz. But practically this rarely happens. One or more state o verdraw s or one or more GS
under supplies. This led to deviation in frequency and system stability. If demand is more than supply
frequency dips from no rmal and v ice ve rsa.
UI charges are incentive provided or penalties imposed on the generating stations. If the frequency is
less than 50 Hz, implies demand is more than supply, then the GS which supplies more power to the
system than committed is given incentives. On the other hand, if frequency is above 50Hz, implying
supply is more than demand, incentives are prov ided to GS for backing up the generating powe r. Hence
it tries to maintains the system stable.
Time of day: Usually during day period th e demand for powe r is very high and the supply remains the
same. Consumers are discouraged to use excess power by making the cost high. Contrary to that
during night time, demand is less compared to supply and hence consumers are encouraged to use
power by pro viding it a t cheape r rate. All these are do ne to make/ke ep the power sy ste m sta ble .
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Solar Power Plantwww.sse-china.com/Solar_Power_Plant
One Stop Solution for Solar Power Plant, Reliable EPC Contractor!
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