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Electrical control & protection systems are a critical part of the distribution & transmission systems that feed power to our cities & industries.
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 :-
Electrical control & protection systems are a critical part of the distribution & transmission systems that feed power to our cities & industries.
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.
Electrical protection is a key element in all electrical systems, and ensures that the electrical network can operate safely and efficiently.
Part 4 of this protection course will introduce you to some more protection systems, with a focus on interlocking, metering, ferruling and drawings.
This particular lecture introduces the principles of ferruling which is used widely inside substations to identify the location of the individual connections that we need for any electrical protection system.
By the end of this lecture you will understand the different types of ferruling that we use and introduce a simple methodology for applying it to all protection systems.
Ferruling is critical to the electrical system as it clearly identified every single signal in the substation, making it possible to operate the system safely, and allow it to be modified easily at a future date
This particular lecture shows how the ferruling system identified in the last lecture can be applied to various types of circuits
By the end of this lecture you will understand how the ferruling system operates, which will then allow you to apply it easily to any type of circuit you come across
Substations have to be fully maintained and tested throughout their lives, so we need to build into them systems that allow the engineers to test individual circuits, without taking the main primary plant out of service and disconnecting the customers.
One way we do this is to install test blocks
By the end of this lecture you will understand the basic philosophy behind test blocks and test plugs, and how we identify the best locations for the test points in some common circuits.
Auxiliary relays are used throughout the electrical protection system for repeating signals, opening and closing the equipments and tying all of the different protections together into one fully functioning system.
By the end of this lecture you will understand the common features of all auxiliary relays and know what details you need to provide when you specify or order an auxiliary relay.
In this lecture will look at some of the common auxiliary relays that are used inside substations, and see how they can be applied.
By the end of this lecture you will understand the common features of trip relays, interposing relays and flag relays
Safety of personnel and the health of the equipment's is the main priority on all electrical substations.
Interlocking is one of the ways in which we ensure that the system is operated safely and in a controlled manner, so that it is impossible to place the system and personnel in harms way.
By the end of this lecture you will understand all about the different types of interlocking that we use on substations, and how the different interlocking systems fit together into one operational network.
The other main way that we control the safe operation and sequencing of the substation equipment is mechanical interlocking
By the end of this lecture you will know which understand the basic principles behind mechanical interlocking and understand how it can be applied in a practical way to different circuit configurations
Most transmission substations have hundreds of design and operational drawings, all of which work together to make sure that the substation is built as planned and can be operated and maintained safely.
By the end of this lecture you will understand the different types of drawings that we require on substations, the common features that appear on all drawings and how to read the drawings to get the information that you require
In most parts of the works electricity has to be paid for and in this lecture we look at how this is achieved using metering systems.
By the end of this lecture you will understand the common features of metering systems at all voltage levels and know how the different types of power affect the system
You should now know the theoretical principles behind metering and the different types of power that we need to measure
In this lecture we will look at the more practical aspects of metering and see how we connect the meters to the current and voltage transformers, and how we ensure that the meters are accurate.
The power factor is a critical factor in the electrical network and affects how much customers pay for their electricity and how the network equipment is sized, in the lecture we look at how to improve the power factor using capacitors.
By the end of this lecture you will understand the basic principles behind power factor correction and how we protect the capacitor banks that we use in these systems.
This a fun quiz on the electrical control and protection part 4 course
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