A typical Hydro-Québec substation showing only one of the installed grid transformers. Hydro-Québec has more than 2,000 grid and GSU transformers with an average age of more than 30 years in operation ...
On-Load Tap Changers (OLTCs) are critical components in power transformers that enable voltage regulation under load without interrupting service. Their frequent operation, however, induces mechanical ...
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