hello friends

I have a wireless pop-site 200 meter behind of the high voltage power lines , I now have some links trough power lines . some of links disconnect without a bad signal .
below images are shown of pop-site position , is this problem from Power lines ?

It could be. I have set up several links like you are describing and some have worked perfectly and others have been plagued with problems. Line noise from AC power can be a real problem with wireless links. One location I had problems with had so much line noise that you couldn't even get FM radio stations to come until you were at least 25 feet away from the building. You can try different frequencies, sometimes that will help. The ultimate solution will be separating your signal from the plane that the interference is on, either by going higher or by going lower. If you have a clear LOS, sometime going lower works.