POWER LINE COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To prevent the interference or disturbance caused by leakage signals between adjacent partial communication networks with a simple constitution. SOLUTION: A power line communication system is provided with a plurality of partial communication networks which communicate to each other by using low-voltage distribution lines L11 and L12 as transmission lines, a communication connecting line 32 which communicates a plurality of adjacent partial communication networks to each other, and connecting sections 31a and 31b which connect the distribution lines L11 and L12 to the communication connecting line 32. The system is also provided with an on-pole converter 10 which manages the partial communication networks communicated to each other through the communication connecting line 32 for communication as one partial communication network.