Say you have voltage distortion at your service due to nonlinear loads down the line( neighbors) Does that have to be from their line to line loads only or can it be from line to neutral loads. I’m thinking it would have to be line to line only.
IEEE519 is a two way street in that the Utility must ensure that YOU, the customer, does not receive more than 5% THD-V at the service terminals, then YOU are required to not EXPORT the same. The utility is not CREATING the harmonic distortion, so the only way they can ensure compliance on their side is to control what their customers export. So yes, the utility can and will call out a customer who is creating excessive harmonics because it will travel on their lines and through their transformers to your neighbors. But how much makes it through is mitigated by a number of factors, so often times you can get away with it, sometimes for years, because nobody nearby has complained. In general though, when you apply for a new or significantly changed service, they will want an sssessment of your THD.I should add that most utilities have a harmonic requirement in their service manual or quote IEEE 519.
I always assumed it was to protect the life of the utility equipment. I don't know if they are worried about the effects of harmonics on nearby services.
That shows how much mutual cancellation occurs in the real world.I am amazed that more pole-pigs don't get so hot the paint burns off of them.
Say you have voltage distortion at your service due to nonlinear loads down the line( neighbors) Does that have to be from their line to line loads only or can it be from line to neutral loads. I’m thinking it would have to be line to line only.