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Design of TM-4000/6 transformer

  • Added: 16.02.2020
  • Size: 3 MB
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Description

Introduction 1. Structural features and determination of the main dimensions of the transformer active part; 2. Calculation of LV and HV windings; 3. Calculation of short circuit parameters; 4. Calculation of the magnetic system; 5. Thermal calculation; List of sources used. List of graphic part (3 sheets of A1 format): 1. Transformer frame in assembled form with attachment parts, magnetic core assembly plan and table with steel package dimensions in rod and yoke sections. Installation of windings on one rod; 2. General view of transformer; 3. HV and LV inputs; HV winding circuit with adjustment branches for voltage control.

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Additional information

Contents

CONTENTS

Introduction

1 Design features and determination of main dimensions of the transformer active part

1.1 Calculation of basic electrical values

1.2 Selection of material and design of magnetic system

1.3 Selection of material and design of windings

1.4 Determination of dimensions of main insulation of windings

1.5 Determination of rod diameter and winding height

2 Calculation of LV and HV windings

2.1 General Information

2.2 Calculation of LV windings

2.2.1 General calculations for any type of winding

2.2.2 Calculation of continuous coil winding

2.3 Calculation of HV windings

2.3.1 General calculations for all winding types

2.3.2 Calculation of continuous coil winding

3 Calculation of short circuit parameters

3.1 Determination of short circuit losses

3.2 Calculation of short circuit voltage

3.3 Determination of mechanical forces in windings and winding heating at short circuit

4 Calculation of transformer magnetic system

4.1 Determination of magnetic system dimensions and mass

4.2 Determination of transformer idling losses

4.3 Determination of transformer idling current

5 Transformer Thermal Calculation

5.1 Thermal calculation of windings

5.2 Heat calculation of transformer tank

5.3 Tank with hinged radiators

5.4 Calculation of winding and oil temperature exceedances

List of sources used

Appendix A Main dimensions of transformer

Appendix B Rod and yoke section

Introduction

Power transformers are one of the most important elements of each electrical network. Thanks to them, it is possible to transfer electricity with minimal voltage losses and use it at voltage designed for any possible consumer. The transmission of electric energy over long distances from the place of its production to the place of consumption requires in modern networks at least 5 - 7 transformations in increasing and reducing transformers.

The purpose of the course design is to familiarize with the methodology for calculating power transformers, getting an idea of ​ ​ the basics of their engineering design, studying the materials used in transformer engineering and their properties.

The object of the course design is the TM4000/6 transformer. It is required to calculate the main electrical values, on the basis of which to select materials, design and calculate the LV and HV windings, as well as the magnetic system of the transformer, determine the short-circuit and idling parameters, and perform thermal calculation of the transformer.

As a result of calculation and design, it is necessary to obtain a compact, economical and technological design that meets the requirements of state standards.

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