Practical Power Distribution for Industry

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Practical Power Distribution for Industry

Introduction

Practical Power Distribution for Industry

    This is a practical book on Power Distribution, focusing on medium voltage (1–36 kV) power considerations, switchgear, power cables, transformers, power factor correction, grounding/earthing, lightning protection and network studies. You will gain useful practical technical know-how in these areas, not always covered by university or college programs.

Typical people who will find this book useful include:

• Electrical engineers

• Design engineers

• Project engineers

• Electrical technicians

• Protection technicians

• Maintenance technicians and supervisors.

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We would hope that you will gain the following from this book:

• Understand practical power distribution fundamentals

• Determine short-circuit ratings quickly and effectively

• Assess the influence of fault levels on switchgear ratings

• Select the correct type of switchgear for the right application

• Evaluate the advantages of modern state-of-the-art switchgear protection for your applications, including preventative maintenance information

• Recognize the different applications for various cable insulation types

• Know when and how to use single core cables vs three core cables

• Specify correct power cable installation methods

• Correctly utilize and protect power transformers

• Assess and specify correct grounding throughout your electrical network

• Determine the need for Power Factor Correction (PFC) for your environment

• Assess the economic justification for installing PFC equipment

• Correctly specify PFC equipment and be aware of practical consequences

• Confidently use software to solve and predict simple power network problems.

Current transformers: how to specify them

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Table Of Contents

1 Introduction to power distribution

1.1 Introduction

2 Medium-voltage switchgear

2.1 Standards

2.2 Switch board layout

2.3 Ratings

2.4 Types of MV switchgear 

2.5 Insulation methods 

2.6 Types of closing mechanisms

2.7 Internal arc proofing

2.8 Modern protection relays used with switchgear

3 Power cables

3.1 Introduction

3.2 Paper-insulated lead-covered (PILC) cables

3.3 Cross-linked polyethylene (XLPE) cables

3.4 Elastomeric cables

3.5 Aerial bundled conductors (ABC) 

3.6 Overhead aluminum conductors

3.7 Cable selection

3.8 Transport, handling and installation of electric cables

3.9 Paper-insulated and lead-covered (PILC) 6.35/11 kV cables

3.10 Medium-voltage XLPE-Insulated, PVC-Bedded, SWA, PVC-sheathed cables

3.11 Low-voltage PVC- and XLPE-insulated 600/1000 V power cables 

4 Compensation

4.1 Introduction

4.2 Series capacitors

4.3 Shunt capacitors

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5 Transformer theory 

5.1 Transformer theory 

5.2 Transformer design applications

5.3 Transformer construction and installation

5.4 Transformer protection

5.5 Relays for protection 

6 Grounding, earthing and transient overvoltage protection 

6.1 Grounding devices 

6.2 Effect of electric shock on human beings

6.3 Surge and transient protection

7 Power system analysis software

7.1 Introduction 

7.2 Load flow

7.3 Sizing study 

7.4 Fault analysis

7.5 Transient stability 

7.6 Fast transients

7.8 The second generation of programs

7.9 Graphics 

7.10 Protection

8 New era of power system automation

8.1 Definition of the term 

8.2 What is power system automation?

8.3 Power system automation architecture

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