Source google image: https://www.memoireonline.com/02/08/956/controle-puissances-tensions-reseau-transport-dispositifs-facts-svc139.png
Reseau electrique schema
Source google image: https://www.memoireonline.com/02/08/956/controle-puissances-tensions-reseau-transport-dispositifs-facts-svc139.png