Control System for a Natural Gas Distribution Network, Natural Gas Distribution Network Comprising Said Control System and Method for Controlling Said Distribution Network

A control system for a natural gas distribution network, comprising:

• a processing unit suited to communicate, through corresponding signals, with one or more control devices operatively connected to said distribution network;
• a rechargeable battery which supplies power to said processing unit;
• a power supply device suited to recharge said rechargeable battery;
• wherein said power supply device comprises:
• a thermoelectric generator connected to said rechargeable battery;
• a first heat exchanger and a second heat exchanger respectively in contact with two sides of said thermoelectric generator opposing each other;
• a vortex tube configured to receive a portion of natural gas from said distribution network and to divide said portion into a part which is colder than said portion of natural gas flowing into said vortex tube, and a part which is warmer than said portion of natural gas flowing into said vortex tube;
• a first conveyance duct suited to convey said colder part into said first heat exchanger;
• a second conveyance duct suited to convey said warmer part into said second heat exchanger.