Electric current can cause conductors to vibrate naturally. When a lot of power is being used, the point of attachment to the house can convert the vibration into noise. This phenomenon is infrequent and is generally not a problem except for the noise emitted. If it poses too much of a nuisance, a master electrician could probably solve the problem by adjusting your electrical installation.
We invite you to get in touch with Hydro-Québec’s customer services. A specialist will ask you questions to find out whether this is indeed your situation.