INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1035
SOLAR IN AUTONOMOUS ELECTRICAL NETWORKS AND USE OF WIND
ENERGY SOURCES
Narimanov Baxodir Absalomovich
Senior Lecturer of Jizzakh Polytechnic Institute
Annotation:
The article discusses issues related to the use of solar and wind installations as
primary sources of energy, which make it possible to create completely autonomous power
plants that provide guaranteed year-round coverage of electrical loads in various climatic
conditions.
Key words:
renewable energy sources, autonomous networks, solar installations, wind
installations, energy characteristics.
INTRODUCTION
In many countries of the world, powerful renewable energy systems are based, as is known,
on the use of mono-wind, mono-solar photovoltaic or monosolar heat generating complexes.
At the same time, there are numerous examples of the simultaneous use of two or more types
of RES. In Canada, to provide power to remote villages, hybrid schemes are used - wind-
diesel and wind driven. Hydrogen is used to generate electricity in internal combustion
engines. The wind-generating scheme is being applied at the Prince Edward Island
WindHydrogen Village and in the city of Ramea. The power of the hydrogen generator is 250
kW. It saves 120 thousand liters of fuel annually, thereby preventing emissions into the
atmosphere: CO
2
– 320 т, NO
x
– 6,8 т, SO
2
– 0,6 т [1].
Experience in operating complex renewable energy systems abroad
The TAFE Tasmania Institute (Australia) has a complex consisting of two wind turbines, an
electrolyzer and a diesel plant, which is adapted to work with hydrogen.
An example of the effective use of a wind-diesel energy complex: on Fair Island (Scotland)
for a village with a population of 70 people, a power plant with two diesel power plants was
built, the first (power - 20 kW) was sufficient for electricity supply in summer, and the other
(50 kW) - for electricity supply in winter (see Table 1). Wind conditions on the island are
very favorable. The average wind speed is 9.6 m / s. In June 1982, a 50 kW wind farm was
installed there. Since then, energy production has increased 3.7 times. The operation of the
VDU on Fair Island showed that the cost of electricity received from the diesel power plant
was 8 cents / kWh, and from the wind farm 3.5 cents / kWh. A special device was developed
for this station, which showed when the energy meter switched to a higher tariff[2].
Table 1 Energy production at an integrated wind-diesel plant (WDP) (Fair Island) for a
year of operation
Energy production on Fair
Island in one year
Power generation
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1036
Power plant
abs. number, kW h
Relative quantity, %
Integrated VDU
Wind farm
DES
185 024
168 895
16 147
100,00
91,28
8,72
The study found that the most likely hours of sunshine are distributed symmetrically around
noon [3].
Analysis of complex renewable energy systems
In the course of the study, scientists established the averaged values of the intensity of solar
radiation h
s
with the distribution of the duration of sunshine (S) symmetrically relative to
noon. It is proposed to determine the intensity of solar radiation as
Where, h
0
= 1360 Вт/м
2
– solar constant; b
s
– coefficient depending on the season is given in
table. 2; S
0
– possible duration of sunshine (day length), [h].
Coefficient b
s
shows the fraction of the solar constant arriving on a horizontal surface at noon.
The product of the coefficient b
s
by the solar constant allows you to determine the intensity of
solar radiation at noon. Coefficient b
s
has a pronounced annual course and is of greatest
importance in the summer.
Tab 2
Parameter of the equation of the intensity of solar radiation "within the day" in the
southern Urals
Param
eters
Monthly
1
2
3
4
5
6
7
8
9
10
11
12
b
s
0,3 0,4 0,45 0,5 0,55 0,6 0,55 0,5 0,45 0,4 0,3 0,2
From the average intensity of solar radiation, given for the corresponding duration of
sunshine, it is easy to determine the solar radiation for a given time
S:
For an objective assessment of the incoming solar energy, it is necessary to know the
probability of the appearance of the sunshine duration, which characterizes its supply p(S).
The probabilistic characteristic of the daytime sunshine duration is determined for each
month according to the observations of the meteorological service.
It is known that the specific power of the wind flow is represented as an average value for the
calculation period and it is necessary to know the average value v
3
. This requires knowing the
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
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page 1037
distribution of the frequency of the wind speed, which can be determined for each month
from the observation data[3-4].
It is known that the specific power of the wind flow is represented as an average value for the
calculation period and it is necessary to know the average value v
3
. This requires knowing the
distribution of the frequency of the wind speed, which can be determined for each month
from the observation data.
Then, by empirical repeatability (t
¿
(v)
) or the differential function f (v) of the wind speed
distribution, you can determine the expected average power of the wind flow for the design
period, W /м
2
[8],
It is recommended to determine the average value of the wind flow power per day. Then the
wind speed at which the average daily wind power is expected is presented as the energy
characteristic of the wind. The dependence of the energy characteristic of the wind flow on
the average wind speed (see Fig. 2) is well approximated by an equation of the form
Where v
ср. м
– average wind speed per month, м/с
Figure 2. Dependence of the energy characteristics of the wind flow on the average wind
speed
The lack of research was the lack of an implemented system for the integrated use of various
types of RES for a full-scale approbation of theoretical calculations [4].
CONCLUSIONS
In general, the complex use of renewable energy sources has been limited until recently due
to objective circumstances and the uncompetitiveness (high cost) of equipment for large-scale
use. However, the increase in tariffs for energy services and fossil fuels brings the issue of
increasing the efficiency of using available renewable resources to a new level. In connection
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
https://www.academicpublishers.org/journals/index.php/ijai
page 1038
with the above examples, the problem arises of continuing research and finding optimal
solutions for the complex application of renewable energy sources proposed in this study.
Based on this, the following conclusions can be drawn:
-
the use of solar and wind installations as primary energy sources makes itpossible to
create fully autonomous power plants that provide guaranteed yearround coverage of
electrical loads, at least for small consumers, in various climatic conditions;
-
the most effective are combined installations that optimally (depending onclimatic
conditions) combine solar and wind installations;
-
development of work is required on experimental development and
furtherimprovement of mathematical models of autonomous power plants on renewable
energy sources, which are the necessary basis for substantiating their optimal configurations,
taking into account significantly different real climatic operating conditions and consumer
characteristics.
REFERENCE:
1.
Suyarov A. Power Loss Minimization in Distribution System with Integrating
Renewable Energy Resources //International Journal of Engineering and Information
Systems (IJEAIS). – 2021. – Т. 5. – №. 2. – С. 37-40.
2.
Hasanov M. et al. Optimal
Integration of Photovoltaic Based DG Units in Distribution Network Considering
Uncertainties //International Journal of Academic and Applied Research (IJAAR), ISSN.
– 2021. – С. 2643-9603.
2.
Boliev A. M. INCREASING THE ECONOMIC EFFICIENCY OF THE RENEWABLE
ENERGY SYSTEM IN UZBEKISTAN //Journal of Academic
3.
Research and Trends in Educational Sciences. – 2022. – Т. 1. – №. 4. – С. 130135.
4.
Джуманов А. Н. и др. ИЗМЕРИТЕЛЬНЫЕ ТРАНСФОРМАТОРЫ
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ТОКА //World science: problems and innovations. – 2021. – С. 76-78.
