Ligne 150 KV - (Champvert - Henri Paul)

## Présentation:

La ligne à haute tension Champvert-Henri Paul est une ancienne liaison à 150 kilovolts qui reliait la centrale thermique de Champvert au poste d'interconnexion Henri-Paul près de Montchanin. Elle a été entièrement démontée fin 2016.

Chargement de la 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class=\"mw-parser-output\"\u003E\u003Cp\u003EChampvert\n\u003C/p\u003E\u003C/div\u003E","title":"Champvert\n","link":"","lat":46.84235550567462,"lon":3.4869643815782103,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EHenry Paul\n\u003C/p\u003E\u003C/div\u003E","title":"Henry Paul\n","link":"","lat":46.74650833465061,"lon":4.500802247523716,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELa Boulaye\n\u003C/p\u003E\u003C/div\u003E","title":"La Boulaye\n","link":"","lat":46.72889853780285,"lon":4.130360437987974,"icon":""}]}
## Historique:

La ligne fut construite en 1936 par la société Schneider et cie et reliait à l'origine les usines métallurgiques du Creusot à la centrale électrique de Garchizy, près des forges de Fourchambault. Elle servait notamment à évacuer l'excédent de production des barrages du Jura vers Nevers et Bourges et était gérée initialement par la Compagnie d'Interconnexion Rhône-Eguzon (CIREG), filiale du groupe Schneider .

Au début des années 1940, un poste de coupure est mis en service à La Boulaye pour raccorder une ligne à 150 000 volts venant de Bayet (Prolongement de la ligne Bayet-Gueugnon, exploitée jusque là en 120 KV).

   Ce poste aura une durée de vie éphémère car il cessera de fonctionner dès 1953. En effet, EDF fait construire cette année là une nouvelle ligne entre Toulon-sur-Arroux et Ecuisses pour raccorder directement Bayet et Henri Paul. Le poste de la Boulaye devient alors obsolète et sera rapidement démonté.

La plateforme, dernier vestige de cet ancien poste électrique; est utilisée aujourd'hui par un magasin de machines agricoles.

L'entrée en coupure dans le poste de Champvert fut réalisé à la même époque (entre 1950 et 1955). Il s'agissait d'une mesure compensatoire suite au déclassement en 60 KV de l'ancienne ligne à 120 000 volts Gueugnon-Champvert, cela afin de maintenir une bonne alimentation des Houillères de Decize. La centrale thermique, elle, avait cessé sa production d'électricité en 1949 et sera démolie en 1978.

Fin 2016, RTE procéde au démontage de la ligne pour "sécuriser l'alimentation électrique du Morvan". Cet événement sonne le glas du réseau à 150 000 volts dans la Nièvre et de la dernière ligne à haute tension qui relait le département à la Saône-et-Loire.

## Description du tracé:

* La ligne débutait au poste de Champvert, juste à côté de l'ancienne centrale thermique.
* Elle partait brièvement vers le nord puis tournait à angle droit vers l'Est.
* Elle suivait le canal du Nivernais et la ligne Nevers-Chagny puis contournait Cercy-la-Tour par le Sud, croisant deux fois la voie ferrée et la D981.
* Elle partait ensuite vers le Sud-Est, franchissait une dernière fois la D981 et la voie ferrée et suivait cette direction jusqu'à Marly-sous-Issy.
* Après avoir croisé la D973, elle bifurquait franchement vers l'Est.
* Elle passait au Nord de Toulon-sur-Arrou, franchissait l'étang de la Sorme puis longeait la D102 par le nord jusqu'à la N70 (RCEA).
* Après avoir traversé la RCEA, elle passait au dessus de Montchanin-Le-Haut puis partait vers le Nord pour se raccorder au poste d'interconnexion Henri Paul.

## Ancienne ligne:

1. Ligne 150 KV - (Garchizy-Henri-Paul).
2. Ligne 150 KV - (Garchizy-La Boulaye)
3. Ligne 150 KV - (La Boulaye-Henri-Paul)