Substation Grounding

Substation grounding is one of the most important elements of substation, as it keeps personnel and equipment safe during an electrical fault.

In this course you will learn all about the practical aspects of grounding and how we connect all of the common equipments inside a substation to the grounding grid.

We will look at how grounding currents are affected by the transformers in the network and the configuration of the circuit breakers, both of which will allow you to define the magnitude of the ground fault for any configuration that you may come across.

It is critical that safety permits are applied in the correct sequence and we will learn how they are implemented in a way which ensures that the personnel are safe during this complex procedure

During a ground fault the substation fence can be the most dangerous element in the substation and we look in detail how we can make it safe for personnel working inside the area.

Selecting the correct size of copper bar for the grounding system is key to the long term design of the substation grounding grid and will show the calculations that will allow you to do this.

When a fault occurs inside the substation the ground beneath the substation will rise to an elevated level which can cause significant issues for the remote end substations, we will look at this issue in detail and show you how to avoid these problems on your network.

We will then go into the more theoretical aspects of grounding and calculate the grid resistance value, the tolerable touch and step voltages, the grid current, ground potential rise and finally the actual touch and step voltages.

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