<｜begin▁of▁sentence｜>### Instruction:
As a geographer, you have been tasked with analyzing the structure of a power grid network using the Power grid graph, which can be extracted from a GML file named power.gml. Your objective is to apply the Louvain community detection algorithm from the cdlib library to identify distinct communities within the power grid network. Additionally, you are required to generate and present a JSON representation of the detected communities.
### Response:
import networkx as nx
from cdlib import algorithms

# Read the power grid graph from a GML file
G = nx.read_gml('power.gml')

# Apply the Louvain community detection algorithm
communities = algorithms.louvain(G, weight='weight', resolution=1.0)

# Generate a JSON representation of the detected communities
communities_json = communities.to_json()

print(communities_json)
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