emission standard effects on ceed problems considering dominant penalty factors
DESCRIPTION
Since the economic power system operation (EPSO) is concerned to decrease the running charges of electric energy with considering the environmental protection for decreasing atmospheric emissions from pollutant productions at thermal power plants, the combined economic and emission dispatch (CEED) problem is helpful to decide the EPSO in financial aspects based on the minimizing total fuel cost and the total pollutant reduction. This paper presents impacts of the emission standard (EmiStd) in the CEED related to pollutant productions and allowed emissions in the EPSO. Moreover, the CEED has been demonstrated in different performances depended on the emission standard (EmiStd) scenarios for power outputs and total costs. These schemes have also presented in different characteristic computations. Based on the EmiStd scenarios, pollutant emissions have been produced totally around 12,127.45 kg/h to 14,570.74 kg/h. These pollutions have been allowed totally to discharge around 2,724.16 kg/h to 3,685.48 kg/h related to the EmiStd. In addition, total operating costs have been optimized around 17,439.47 $/h to 18,157.39 $/h considered the allowed emission.TRANSCRIPT
The 2013 Annual Meeting of The Institute of Electrical Engineers of Japan, Nagoya University, Nagoya, Japan, March 20-22, 2013
Multiple Food Sources for Composing Harvest
Season Artificial Bee Colony Algorithm on
Economic Dispatch Problem
A.N. Afandi* and Hajime Miyauchi (Kumamoto University)
1. INTRODUCTION
Recent years evolutionary methods are frequent used
to solve optimization problems. A novel method of this
group is Artificial Bee Colony (ABC) algorithm imitated
foraging behavior of honeybees in nature [1]. Presently,
the important challenges of the ABC are devoted to
convergence speed, searching mechanism and real
applications [2], [5]. As part of works to improve the ABC
becomes Harvest Season Artificial Bee Colony (HSABC),
this paper introduces multiple food sources for
composing the HSABC applied to economic dispatch
problem.
2. MULTIPLE FOOD SOURCES
In these studies, a food source expresses a flower
and multiple food sources (MFS) are used to mimic flowers
of harvest season. The MFS is preceded by foraging for
the first food source. The first food source is searched
by using expression (1) adopted from the classical ABC.
One others of the MFS are generated by equation (2)
around the first food source to perform the HSABC.
(1)
(2)
where i is the ith solution of the food source, k
{1,2,3,…,SN}, SN is the number of solutions,
j{1,2,3,…,D}, D is the variable number of objective
function problem, vij is food position, Øij is a random
number within [-1,1], xij is a current food, xkj is random
neighbor of xij, xfj is random harvest neighbor of xkj,
Hiho is harvest season food position, ho{2,3,…,FT},
f{1,2,3,…,SN}, and FT is the total number of flowers
for harvest season.
Contribution of the MFS is shown in economic dispatch
(ED) computation. The ED problem considers an emission
dispatch during minimizing cost as single objective
function of optimization and it is composed to be
Combined Economic Emission Dispatch (CEED) [3], [4].
3. SIMULATION RESULTS
In these works, the MFS is demonstrated in the CEED
considered 283.4 MW of total load of IEEE-30 bus system.
Determining solution is controlled by colony size=100,
food source=50, limit food source=50 and foraging
cycles=100. By considering 0.5 of compromised factor,
the CEED is constrained by equilibrium between demands
and power outputs, maximum and minimum powers of
generating units, and 5% of voltage limit.
A set population is shown in Figure 1 for initiating
50 values of candidate solution in every foraging for
the food. This figure illustrates the random foods for
the MFS at certain position. By indexing in Figure 2 for
all period of cycles, positions of the MFS are performed
on Figure 3, Figure 4 and figure 5. Figure 6 shows the
combined involvement of each food source during
computation captured within fifth iterations.
Fig. 1. Initial population of the candidate solution
Fig. 2. Random index of multiple food sources
-
50
100
150
200
250
0 10 20 30 40 50
Foo
d c
and
idat
es (
MW
)
Population
G1 G2 G3 G4 G5 G6
-
10
20
30
40
50
60
0 20 40 60 80 100
Ran
do
m in
dex
Iterations
j k f1 f2
The 2013 Annual Meeting of The Institute of Electrical Engineers of Japan, Nagoya University, Nagoya, Japan, March 20-22, 2013
Fig. 3. Position of food source 1
Fig. 4. Position of food source 2
Fig. 5. Position of food source 3
Fig. 6. Combined position of multiple food sources
Every position of food source is associated with
population of candidate solution which is explored as
the solution at certain cycle. Combined position of the
MFS is applied to solve the CEED for determining solution
in every cycle. Final solutions of simulation using
combined MFS are given in Table 1 for powers, costs and
emissions. According to this table, generating units
produce 289.7 MW for supplying 283.4 MW of load demand
with 6.3 MW of power loss. The joining power stations
needs 1449.055 $/hr of total payment for fuel cost and
emission cost. By considering 0.5 of compromised factor,
minimum cost value of the CEED is remained in 9
iterations.
Table 1. Numerical Results of computation
Units Power (MW)
Emission (kg/hr)
Fuel cost ($/hr)
Emission Cost ($/hr)
G1 126.274 84.991 312.343 152.269
G2 49.679 69.705 130.127 124.883
G3 28.338 46.903 78.527 84.032
G4 31.696 53.976 111.389 96.103
G5 26.579 45.081 97.398 80.766
G6 27.134 45.104 99.809 80.807
Total 289.700 345.758 829.594 619.461
4. CONCLUSIONS
The simulation results demonstrated successful
application of multiple food sources on economic
dispatch through the CEED problem using IEEE-30 bus as
a test system. By using three food sources, the
convergence speed is quick to select the solution. From
these works, the effectiveness application on the real
sample system is important for future investigations.
References
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