Design of electric power plant and electrical power plant
- Added: 29.12.2015
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Description
Introduction First place in the amount of electricity consumed belongs to industry, which accounts for more than 60% of the energy generated in the country. With the help of electric energy, millions of machines and mechanisms are driven, rooms are illuminated, process processes are automatically controlled, etc. There are technologies where electricity is the only energy source. Due to the acceleration of scientific and technological progress, energy consumption in industry increased significantly due to the creation of flexible automated industries. The energy program provides for the creation of powerful territorial production complexes (TPK) in those regions where large reserves of mineral and water resources are concentrated. Such a complex is mined, processed, transported energy resources using various electrical installations for the production, transfer and distribution of electric and thermal energy. The energy program of Russia provides for the further development of energy-saving policy. Energy resources should be saved by switching to energy-saving production technologies; improvement of energy equipment; reconstruction of obsolete equipment; Reducing all energy losses and increasing the use of secondary resources; improving the structure of production, transformation and use of energy resources. Modern energy is characterized by an increasing centralization of electricity production and distribution. Energy systems form several large energy associations. The integration of regional ECO into a more powerful system formed the Unified Energy System (UES) of the Russian Federation. The EEC made it possible to reduce the necessary generator power compared to isolated power plants and carry out more rapid control of energy flows from the East, where about 80% of fuel and hydraulic resources are located, to the West of the country, since 80% of all energy consumers are located in the European part of the country. For electrical communication between ECO, ultra-long transmission lines with a voltage of 330 are used; 500; 750 and 1150 kV and above. The energy policy of the Russian Federation provides for the further development of an energy-saving program. Energy resources should be saved by: switching to energy-saving production technologies; improvement of power equipment, reconstruction of obsolete equipment; reducing all types of energy losses and increasing the level of use of secondary energy resources. Replacement of organic fuels with other energy sources, primarily nuclear and hydraulic energy, is also envisaged. In the near future, energy is faced with the task of fully developing and using renewable energy sources: solar, geothermal, wind, tidal, etc. Development of combined generation of electricity and heat for district heating of industrial cities.
Project's Content
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ПЗ.doc
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сод_введ_литер.doc
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Электро4-кп.cdw
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Additional information
Contents
CONTENTS
Introduction
Electrical part
Calculation of electrical loads
Calculation and selection of compensating device
Calculation of transformer quantity and power
Calculation of electrical devices and live parts from the high side
Calculation of starting currents
Selection of wires, cables and circuit breakers
Check selected cable section for permissible voltage loss
Calculation of short-circuit currents
Occupational safety
Calculation of grounding device
List of used literature
Introduction
The Russian electricity industry is the most important life-supporting industry in the country. It consists of more than 700 power plants with a total capacity of 215.6 million kW; more than 1 million people work in the industry
The strategy for the development of domestic energy provides for a further increase in electricity production by all power plants in Russia. By 2015, it is planned to achieve annual electricity generation of 1460 billion kWh.
The main consumers of electricity are industrial enterprises and civilian buildings. They consume more than 78% of all electricity generated in our country.
The commissioning of new enterprises, the expansion of existing ones, the growth of their energy supply, the widespread introduction of various types of electrical technologies in all sectors of production, and huge housing construction put forward the problem of rational electricity supply to consumers.
A power supply system is a set of plants for generating, distributing and consuming electricity.
The system for distributing a large amount of electricity should have high technical and economic performance and be based on the latest achievements of modern technology. Therefore, the power supply of industrial enterprises and civil buildings should be based on the use of modern competitive electrical equipment and progressive power supply schemes, and the wide use of automation.
Modern electrical equipment requires high-quality and reliable power supply. Obtaining electricity requires a large material cost from the state and leads to environmental disruption. Therefore, energy is faced with the problem of saving electricity.
One of the proven ways to minimize power losses is to compensate for the reactive power of consumers using local reactive power sources, with the right choice of their type, power, location and automation method being important. Three-phase current networks and installations with a frequency of 50 Hz are also more economical compared to single-phase use networks and installations, since both single-phase and three-phase consumers can be fed from three-phase networks.
In addition to three-phase current, some industries use direct current, which is obtained by rectifying alternating current. In most cases, these are electrolysis plants of the chemical industry and non-ferrous metallurgy, as well as railway and urban electric transport.
In modern conditions, the main tasks of specialists involved in the design, installation and operation of modern power supply systems of industrial enterprises and civil buildings are the correct determination of electrical loads, rational transmission and distribution of electricity, ensuring the necessary degree of reliability of electricity supply, the quality of electricity at the terminals of electric receivers, electromagnetic compatibility of electric power receivers with the supply network, saving electricity and other material resources.
Электро4-кп.cdw
