The document summarizes a study on reducing CO2 emissions from thermal power plants through load dispatch scheduling. It presents equations to calculate CO2 emissions from power plants and describes using evolutionary algorithms to optimize load scheduling across three power plants. The results show evolutionary techniques achieved the lowest overall CO2 emissions of 8,426 tons compared to other methods, while maintaining the same total power output. The conclusion is that properly selecting which plants generate power through load scheduling can reduce CO2 emissions without additional equipment.

1. International Journal of Electrical Engineering and Technology (IJEET),
INTERNATIONAL JOURNAL September – October (2013), ISSN 0976 – 6545(Print),
OF ELECTRICAL ENGINEERING &
ISSN 0976 – 6553(Online) Volume 4, Issue 5,
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TECHNOLOGY (IJEET)
ISSN 0976 – 6545(Print)
ISSN 0976 – 6553(Online)
Volume 4, Issue 5, September – October (2013), pp. 126-129
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IJEET
©IAEME
REDUCTION IN CO2 EMISSION FROM THERMAL POWER PLANT BY
USING LOAD DISPATCH SCHEDULE
S. R. Vyas1, Dr. Rajeev Gupta2
1
2
Research Scholar, Mewar University, Chhitorgrah. India
Dean EC Dept., University College of Engg. RTU, Kota. India
ABSTRACT
Reduction in the emission of the CO2 gases from the thermal power system operation is the
very huge task for the pollution control department of power plant. There are so many methods are
used for the reduction of the CO2 emission from the power plant. All the methods require so many
equipment and additional arrangement for the reduction in CO2 emission from the power plant. On
the other hand if we reduce the emission with arraigning load in proper schedule than there are no
additional arrangement and equipment require. In this method we can use the optimum output in
terms of emission from the different power plant. Overall emissions reduce for the given output of
power with same equipment by load dispatch scheduling.
Key Word: Load dispatch, Emission, Scheduling.
INTRODUCTION
Power generation system is the mirror for any developing country. Any development in
country is directly related with the development in the power system generation and increase in the
power plant. There are different types of power plants are used for the electrical power generation. In
India major part of total electrical power generation is form the thermal power plant. Now with the
development number of power plant must be increased to fulfill the requirement of load. But due to
this increase so many problems arise. Major problem is the pollution from the power plant. In
thermal power plant there are so many factors related with the pollution. Green house gases emission
from the thermal power plants take main part in air pollution. CO2 gas creates major effect on the
environment among the all flue gases generated from the thermal power plant. So reduction in the
amount of CO2 emission from the thermal power plant is the major task for the pollution control
board and authority with the same electrical power generation. Now there are many filter and
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2. International Journal of Electrical Engineering and Technology (IJEET), ISSN 0976 – 6545(Print),
ISSN 0976 – 6553(Online) Volume 4, Issue 5, September – October (2013), © IAEME
accessories are used from the reduction in the CO2 emission from the thermal power plant. All these
arrangements require additional equipment so overall cost is also increased with this additional
modification. Now in advance management system emission can be reduce by the proper load
arrangement among the all power thermal power plant units which are connected in the same grid. In
this paper this load dispatch used for the reduction of CO2 gas emission from the thermal power
plant.
Problem Formulation
A three-generator system has been considered for the load dispatch for the reduction in CO2
emission. General equation for the emission calculation for the individual power plant unit is as per
given below.
NG
F1 =
∑ (a i Pg i 2 + b i Pg i + c i )
kg/h
i =1
Where ai, bi and ci are CO2 coefficients and NG is the number of generators and F1 is total CO2
emission from the each thermal power unit.
Our requirement is to minimize the value for the F1 for the each plant at given. At different
value of load generating output of plant may be differing but the overall value for the F1 must be
minimal. So our problem is to minimize the value of F1 with load. For the above there are so many
methods has been used. Some of them used here for the optimization and then compare for the selection
of best method.
METHODOLOGY
Different methods for the minimization of emission is as per given below. Classical Method,
Weight Method, Genetic Algorithms, Evolutionary Method. Computerized program developed for the
above methods with Mat lab language. Data for the generator is as per the given below. Here we
consider three units for the calculation and their maximum and minimum capacity is as per table.
No. of
Generator
1
2
3
Table: 1
Generator rating
Maximum
in
Value in
Mw.
Mw.
210
240
210
238
120
100
Minimum
Value in
Mw.
90
85
20
CO2 emission coefficient for the each three plants are as per given in table 2.
Sr.No.
Table: 2
CO2 emission coefficient for the plant
ai
bi
ci
1
0.265110
-61.01945
5080.148
2
0.140053
-29.95221
3824.770
3
0.105929
-9.552794
1342.851
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3. International Journal of Electrical Engineering and Technology (IJEET), ISSN 0976 – 6545(Print),
ISSN 0976 – 6553(Online) Volume 4, Issue 5, September – October (2013), © IAEME
Table: 3
Loss coefficient for the given plant
di
fi
Sr.No.
gi
1
0.000134
0.0000176
0.000183
2
0.0000176
0.000153
0.000282
3
0.000183
0.000282
0.00162
RESULT
Comparison of result for above methods are given below
CO2 Emission
8426
9391
9168
8925
Method
Evolutionary
Genetic
Wait age
Classical
9500
9000
CO2 EMISSION
8500
8000
Classical
7500
Weightage
7000
Genetic
6500
Evolutionary
6000
5500
300
350
400
450
GENERATION MW
CONCLUSION
Result shows that Emission is low with the help of Evolutionary technique. In all methods
total output is never change but the emission of CO2 gas is reduced with the proper selection of their
generating station. Best result shows the lesser emission of CO2 gas form the generating unit at same
load. This will reduce the overall generation of CO2 gas for the Power system.
128

4. International Journal of Electrical Engineering and Technology (IJEET), ISSN 0976 – 6545(Print),
ISSN 0976 – 6553(Online) Volume 4, Issue 5, September – October (2013), © IAEME
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