What you'll learn

Why we use interlocking on electrical substations

Where to put metering in electrical networks

How to read and understand protection and control drawings

How to use test plugs and sockets and where to put them in the protection system

Why trip relays are needed on the protection system

How to use interposing relays

How mechanical interlocking is used to ensure that equipment is switched in a safe sequence

How we connect meters to current transformers & voltage transformers

How to define the ferruling for different types of circuits

Explain the different types of relay flags & contacts

Requirements

None

Description

The fourth part of this protection course focuses on the building blocks of a protection system and the feeder protection systems that we use on high voltage networks

The course will go into detail for the following key topics :-

Introduce the general principles behind the different types of drawings we use and how we read them

Show how we apply ferruling to the different circuits on the protection system

Look at all of the different types of auxiliary relays that we use including trip relays, flag relays and interposing relays

Look at test blocks and test plugs and show how we integrate them into different types of circuits.

Introduce the principles behind interlocking, and develop the logic for some typical circuits

Show how we apply electrical interlocking to the substation systems

Introduce the ideas behind mechanical interlocking and provide some working examples of how it can be applied to a typical circuit.

Look at the principles behind metering, what equipment we use and how we define the current transformers and voltage transformers

Look in detail at power factor compensation and how we protect the capacitor banks that we use for these systems.

By the end of the course the student will be able to identify all of the key components of a protection & control system and understand how all of these components fit together to create a fully integrated system.

Who this course is for:

Electrical Eeers

Students

Electricians

Anyone interested in electrical design



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