Name
Popuchieva Maria Aleksandrovna
Scholastic degree
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Academic rank
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Honorary rank
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Organization, job position
Kuban State Agrarian University
Web site url
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Articles count: 7
The high speed of solar energy development in the
modern world allows us to assert that in the near
future it will become one of the main sources of
electricity. The authors describe a classification of
solar power plants, which can be of two types –
thermodynamic and photovoltaic, as well as the
features of design and operation of these plants. There
is a structural and schematic solution of autonomous
solar power stations and ones operating in parallel
with the external power grid. The features of their
design and operation, including the main advantages
and disadvantages were shown. It is shown that to
improve the reliability, including uninterrupted power
supply, a promising direction is the development of
combined systems which in addition to the solar
power plant may use wind power, gas or diesel
power, etc. In addition, such stations may provide
power from the external power supply. We have
given one of the variants of structural designs of
combined systems of energy and disclosed
recommendations for the design of energy-efficient
combined systems of power supply, made using
renewable and conventional sources of electricity.
The final version of the combined system of
electricity supply and the degree of participation of
traditional and renewable energy sources in electricity
production is determined on the basis of the analysis
of the energy balance and electromagnetic
compatibility of the main functional elements of the
system
The article reveals the basic principle of stabilizing
the DC voltage, providing automatic control of
electrical devices and electrical equipment, control
systems, control and protection, etc. There are
functional diagrams (operated and promising) of DC
voltage stabilization with a device included in the
input and output power circuits of the rectifier, and a
new structural solution to a functional circuit of the
rectifier made of two controllable power electronic
devices and transformer with midpoint. The article
lists peculiarities of the circuits of the voltage
regulators and their main advantages and
disadvantages. We have reviewed functional
diagrams of existing and new solutions of the
stabilizers and the characteristics of their work; it
will increase the effectiveness of pre-project works
on the development of stabilizers of the DC voltage
with improved performance characteristics. This
article might be useful for post-graduates and
research workers who are involved in the
development of DC voltage stabilizers
The article reveals the advantages of low energy in comparison with other renewable energy sources. It is shown that broad prospects are visible for small (100 - 1000 kW) and micro hydropower plants (up to 100 kW) when used in the foothill and mountain areas. At the same time, the construction of hydropower plants of sleeve-type has improved the operational and technical characteristics, among other types of small-scale power plants. The article presents main analytical expressions for calculating hydroelectric power generator and it has built graphic dependences for the power generator of pressure and water flow. To improve the performance of small hydroelectric power plants we have proposed using unregulated water turbine and non-contact induction generator in their construction, thus, we could stabilize voltage and frequency directly by the frequency converter. Depending on the requirements of consumers to power supply reliability and electricity quality, we have offered several options for structural and circuit solutions of autonomous systems of electrosupply, made using small hydroelectric power plants. Thus, we can greatly enhance the efficiency of such systems if they are used with other types of renewable sources, such as windfarms or solar power plants
In the article, the general concepts and the maintenance
of total, technical and economic resource of solar power
are revealed. The advantages of solar power in comparison
with other kinds of energy are resulted. We have
shown, that currently the method of direct photoelectric
transformation is one of priority directions of
reception of solar electric power in the world. It is because
it provides the maximal ecological cleanliness of
transformation, an opportunity of reception of energy
practically in any area, significant service life and small
expenses for service. The structure and features of work
of solar photo-electric installations were listed as well.
The schemes of using photo cells and their voltage and
amperes characteristics, lacks of solar photo-electric
stations are resulted, basic of which are: high cost of
photo-electric converters and presence of accumulators,
and we have also offered recommendations on their
effective use. The basic analytical expressions for definition
of economic efficiency of solar photo-electric
stations are resulted. The considered features of the
work, the basic characteristics and the parameters of
solar photo-electric stations which will allow to increase
the efficiency of predesign works on development of
the combined (hybrid) stations, generating electric and
thermal energy, received from solar radiation
The article discusses the structural schematics of solar
energy systems, providing guaranteed power supply
to electricity consumers with priority for consumers
of the 1st category. The work describes main
functions performed by modern energy systems. It is
shown that nowadays solar power systems of
uninterruptable power supply are classified into three
types: independent; hybrid (combined); intellectual.
We have given the structural scheme of solar systems
power systems of uninterruptable power supply and
the features of their work. The article describes a
monitoring system, carrying out functions of control
and measurement of parameters of the power system
depends on its performance. The economic
performance of a solar power system has been
influenced essentially by the cost of solar and
accumulator batteries. The principal technical
characteristics of modern solar and regular batteries
of the best companies were compared. We have also
given recommendations for improving the operational
characteristics of solar energy systems of guaranteed
power supply, in which special attention is paid to
technical characteristics of the main functional
elements of the system, including electromagnetic
compatibility
In agricultural production, the direction of introduction
of renewable energy for power consumers remote from
the external electrical network is relevant. Here,
prospects are revealed in front of the solar PV stations.
One of the main functional units of solar power is
inverters that convert the DC voltage of the solar
panels into alternating current. The article describes
the advantages and disadvantages of the main methods
of voltage regulation of the autonomous inverters of
solar photovoltaic power plants. We have proposed
new structural designs of autonomous voltage
inverters, described their advantages, features of
design and operation for voltage stabilization. We
suggest stand-alone inverters designed using high
frequency link, which will significantly improve mass
and dimensions parameters of the converter. Due to the
use of single-phase transformer with a rotating
magnetic field in stand-alone inverters, we improve the
efficiency of the converter and the reliability of the
work. Patents of the Russian Federation confirmed the
novelty of technical solutions of the considered
schemes of autonomous voltage inverters. Structural
schematics of the voltage regulators considered in the
article, as well as features of their work, will allow to
increase efficiency of preliminary works on
development of autonomous voltage inverters with
improved operational and technical characteristics for
solar photovoltaic power plants
The article deals with the basic methods of stabilizing voltage generators for small hydroelectric power plants. It shows a block diagram of the implementation and analysis of the characteristics of the work; it reveals the advantages and disadvantages. The authors explain the features of the work of the functional circuits voltage regulators with discrete ballast, with phase control and management of the load current. It is shown, that to improve the performance of small hydroelectric power plants considerably we have to use contactless generators in their construction: asynchronous generators with capacitive excitation and synchronous generators with permanent magnets. The functional scheme of the voltage regulator, the construction of which has an additional field winding, simplifies the system voltage stabilization of the synchronous generator with permanent magnets, as well as a functional scheme of an asynchronous generator voltage regulator, made using step-up transformers, which significantly reduces the weight of the capacitors providing excitation of the generator and compensation of reactive power load. We have discussed the methods and devices for stabilization of voltage generators which will improve the effectiveness of pre-design work on the creation of new devices of stabilization of parameters of electric power generators for small hydroelectric power plants with improved operational and technical specifications