Electric Power Substations Engineering, Third Edition by John D. McDonald
By John D. McDonald
Using electrical energy substations in new release, transmission, and distribution is still the most demanding and intriguing parts of electrical strength engineering. fresh technological advancements have had an enormous influence on all elements of substation layout and operation. With eighty% of its chapters thoroughly revised and brand-new chapters on power garage and clever Grids, electrical strength Substations Engineering, 3rd version presents an in depth up to date review of substations, serving as a reference and consultant for either and academia. individuals have written each one bankruptcy with distinct layout details for electrical strength engineering pros and different engineering pros (e.g., mechanical, civil) who wish an summary or particular info in this demanding and critical zone. This booklet: Emphasizes the sensible software of the know-how comprises vast use of pix and images to visually show the book’s techniques offers acceptable IEEE criteria in every one bankruptcy Is written through specialists who've a regular of 25 to 30 years of event provides a brand new bankruptcy addressing the foremost function of the substation in shrewdpermanent Grids Editor John McDonald and this very extraordinary workforce of participants hide all elements of substations, from the preliminary inspiration via layout, automation, and operation. The book’s chapters—which delve into actual and cyber-security, commissioning, and effort storage—are written as tutorials and supply references for extra studying and learn. As with the opposite volumes within the electrical strength Engineering guide sequence, this ebook provides a excessive point of element and, extra importantly, an instructional form of writing and use of pictures and photos to assist the reader comprehend the fabric. a number of bankruptcy authors are participants of the IEEE energy & power Society (PES) Substations Committee and are the particular specialists who're constructing the factors that govern all facets of substations. accordingly, this ebook comprises the newest technological advancements in perform and criteria. A quantity within the electrical energy Engineering instruction manual, 3rd variation.
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Extra resources for Electric Power Substations Engineering, Third Edition
Example text
19 Maintenance Experience has shown that the internal parts of the GIS are so well protected inside the metal enclosure that they do not age, and as a result of proper material selection and lubricants, there is negligible wear on the switch contacts. Only the circuit breaker arcing contacts and the Teflon nozzle of the interrupter experience wear proportional to the number of operations and the level of the load or fault currents being interrupted. The contacts and nozzle materials combined with the short interrupting time of modern circuit breakers provide typically for thousands of load current interruption operations and tens of full rated fault current interruptions before there is any need for inspection or replacement.
Once the switches are operated to the open position, portable safety grounds can be attached to the de-energized equipment for worker protection. In place of portable grounds or in addition to portable grounds (as a means of redundant safety), switches can be equipped with grounding blades to perform the safety grounding function. The principal drawback of the use of grounding blades is that they provide a safety ground in a specific, unchangeable location, where portable safety grounds can be located at whatever location desired to achieve a ground point for personnel safety.
Three-phase enclosure GIS does not have circulating currents, does have eddy currents Gas-Insulated Substations 2-17 in the enclosure, and should also be multipoint grounded. With multipoint grounding and the many resulting parallel paths for the current from an internal fault to flow to the substation ground grid, it is easy to keep the touch and step voltages for a GIS to the safe levels prescribed in IEEE 80. 16 Testing Test requirements for circuit breakers, CTs, VTs, and surge arresters are not specific for GIS and will not be covered in detail here.