Mechanical workshop ESN with drawings

Contents

INTRODUCTION

1. Characteristics of power generation and consumers

2. Calculation of electrical loads

Workshop Electrical Load Calculation Table

3. Selection of compensating device

4. Calculation and selection of transformers

5. Selection of protection devices and wire

Site Power Grid Calculation Table

6.Select 10kV supply cable

7. Calculation of short-circuit currents and check of supply cable on

thermal stability

8. Selection of equipment on the 10-0, 4kV side

9.Grounding calculation

10. List of used literature

Introduction

Electricity is an industry engaged in the production of electricity at power plants and its transfer to consumers. Energy is the basis for the development of production forces in any state, ensures the uninterrupted operation of industry, agriculture, transport, utilities.

The increase in the level of electrification of production and efficiency of energy use is based on the further development of the energy base, a continuous increase in electric energy.

Currently, with the presence of powerful power plants combined into electric systems that have high power supply reliability, the construction of power plants continues at many industrial enterprises. The need for their construction is due to the great distance from energy systems, the need for thermal energy for production needs and heating, the need for backup power for essential consumers.

Currently, methods for calculating and designing workshop networks, choosing the capacity of workshop transformers, methods for determining workshop loads, etc. have been developed. In this regard, the issues of training highly qualified personnel who can successfully solve the issues of designing electricity supply and practical tasks are of great importance.

The purpose of course design is to systematize and consolidate the obtained theoretical knowledge and practical skills in the field of power supply of the industry, formations of skills to apply theoretical knowledge in solving the issues raised, to consolidate the skills of using reference, regulatory and legal documentation, to develop creative initiative, independence, responsibility and organization, and to prepare for the final state certification.

Characteristics of power generation and consumers

The Mechanical Mass Production Shop (MTSSP) is designed for mass production of products for the heavy engineering plant.

It is an auxiliary link in the industrial production chain of the plant.

The workshop has a machine department, production, auxiliary, household and office premises. ESN is carried out from 6 and 10 kV GPP located in the plant at a distance of 1.2 km from the workshop. From the power system to the GPP - 12 km.

Shop consumers belong to category 1, 2 and 3 of reliability of power supply. Number of working shifts-2. Soil in the area of ​ ​ the workshop - clay at a temperature of + 10С.

The workshop building frame is mounted of blocks - sections, 4 m long each.

Sizes of the AHVHN shop of =48х32х8 m.

All auxiliary rooms are two-story, 3.5 m high.