Power supply of the enterprise

Contents

Contents

Introduction

1. Job for coursework

1.1. Source Data

1.2. Design characteristics of production equipment

1.3. Characteristics of the environment of production premises

1.4. Characteristics of electric power consumers by degree

uninterrupted power supply

2. Calculation of electrical loads of the workshop

2.1. Mechanical compartment

2.2. Procurement and welding compartment

2.3. Thermal compartment

2.4. Blacksmith department

2.5. Galvanic compartment

2.6. Lighting load per workshop

2.7. Workshop electrical load

2.8. Transformer selection

3. Selection of conductor sections and main protection and switching equipment

3.1. Object: TP No.

3.2. Object: BRU № 2 Thermal compartment

3.3. Object: SBS No. 1 and No. 2 of the Thermal Compartment

3.4. Object: VRU No. 3 of the Galvanic Compartment

3.5. Object: SBS No. 1 of the Galvanic Compartment

Conclusion

List of sources used

Introduction

A power supply system is a set of devices for the production, transmission and distribution of electric energy.

Power supply systems of industrial enterprises are created to provide electricity to industrial receivers of electric energy, which include electric motors of various machines and mechanisms, electric furnaces, electrolysis plants, devices and machines for electric welding, lighting plants and other industrial receivers of electric energy. The task of power supply to industrial enterprises arose simultaneously with the widespread introduction of an electric drive as the driving force of various machines and mechanisms and the construction of electric stations.

The first electric stations were built in cities for the purpose of lighting and powering electric transport, as well as at factories and factories. A little later, it became possible to build electric stations in places of fuel deposits or places of water energy use, to a certain extent independent of the places of electric energy consumers - cities and industrial enterprises. Transmission of electric energy to consumption centers began to be carried out by high-voltage transmission lines over long distances.

Currently, most consumers receive electric power from power systems. At the same time, the construction of its own thermal power plants continues at a number of enterprises.

As electricity consumption develops, the power supply systems of industrial enterprises also become more complicated. They include high-voltage networks, distribution networks, and in some cases industrial CHP networks. There is a need to introduce automation of power supply systems of industrial enterprises and production processes, to carry out large-scale dispatching of production processes using telesignation and telecontrol and to conduct active work to save electric energy.

The design of power supply systems of industrial enterprises was carried out centrally in a number of design organizations. As a result of the generalization of the design experience, standard solutions arose.

Currently, methods have been created for calculating and designing workshop networks, selecting the capacity of transformers, a method for determining electrical loads, selecting voltage, sections of wires and cable cores, etc.

Conclusion

In this explanatory note, the power supply of the enterprise was calculated, the purpose of which is to select the most optimal version of the scheme, the parameters of the electric network and its elements, which make it possible to ensure the necessary reliability of the power supply and uninterrupted operation of the workshop.

During the course project, we calculated the electrical loads. The number and power of transformers were chosen taking into account the optimal load factor and the category of powered electric receivers. We chose the most reliable option for the section of wires and cables of feeders and switchgears. Determined the power of compensating devices

Based on the calculations made, it can be concluded that the most optimal and rational option of power supply to an industrial enterprise was chosen.