Electrical Earthing System Design & Soil Resistivity Testing
What are the procedures for creating an HV Earthing System Design? Also, how might these differ from an LV Earth design?
Firstly, although the principles underpinning HV and LV earthing are similar, the approaches are very different.
The first huge difference is the recognition that HV electrical earthing design is probabilistic in nature. Whereas LV earthing is far less so.
What do I mean?
[Read more…] about Earthing System Design Procedure A Probabilistic ApproachIn Electrical Engineering terms, earth (or ground) is the point of reference in an electrical circuit from which the voltages are estimated. The earthing system or to our friends over the pond; grounding system also has the function of providing a common return path for electric current through a physical connection to the geology. In an electrical installation, an earthing system or grounding system electrode connects specific parts of that installation with the Earth’s conductive surface for safety and functional purposes.
[Read more…] about What is an Earthing System – A Definitive Guide to Earthing Grounding SystemsIn the context of electrical earthing or grounding. Earthing Protection defined as the Protective Earthing of electrical installations at low voltage, i.e. <1,000V AC as described in Electrical Earthing Standards BS 7430.
So, in this case, study. We take a look at a few challenges we came across while designing the HV Earthing and Lightning Protection Systems. For a 9MW Energy from Waste Plant in Europe.
[Read more…] about Low Voltage & High Voltage Earthing Protection – A Case Study at an EFW PlantHigh Voltage Earthing is one of the hot topics within the electrical system design sector. Sound advice and knowledge can really make a difference in controlling the build-budget. And the number of technical queries (TQ’s) generated. Particularly relevant on the more complicated projects. So selecting the right Electrical Earthing Consultant can make your life so much easier in the long run.
[Read more…] about Serious Questions to Ask Before You Hire Your Next Electrical Earthing Consultant. Including Me!Today is just another day at your local HV substation. Inside, the transformers gently hum and switchgear sit idle. Outside, a neighbour’s neglected tree loses a branch, which clashes with an overhead line. Ask yourself: What happens next? That depends on the substation design and their protection systems, which are the focus of this post.
So, what are protection systems? It’s a system that controls switchgear to detect and correct electrical faults. Generally, combining In a home, the switchgear and protection in a single unit, such as a fuse or MCB. The high voltage world is surprisingly similar, only the switchgear is much larger, and the protection systems separated.
[Read more…] about Making the grade: How well designed is your substation and its protection systems
