Address detective method for parallel connection LED lighting system and parallel connection LED lighting system

A parallel connection LED lighting system, comprising:

• a plurality of LED devices, electrically connected in parallel, and each comprising:
• an LED lighting unit;
• an LED processing unit, electrically connected to the LED lighting unit, and controlling the LED lighting unit;
• a main controller, electrically connected to the plurality of LED devices, and comprising:
• a storage unit, storing an address table;
• and
• a main processing unit, electrically connected to the storage unit;
• wherein the main processing unit generates a testing signal corresponding to a sequence code in the address table, and transmits the testing signal to the plurality of LED devices;
• wherein the main processing unit further determines whether a sum of consumption values of the plurality of LED devices increases by a first predetermined value to define an abnormal LED device;
• wherein when the sum does not increase by the first predetermined value, the main processing unit generates a reminder signal, and transmits the reminder signal to the plurality of LED devices;
• wherein the main processing unit of the main controller further determines whether the sum increases by a second predetermined value;
• wherein when the sum increases by the second predetermined value, the main processing unit detects an address code of a new LED device which is installed for a replacement of the abnormal LED device, and replaces an address code in the address table which corresponds to a current testing signal with the detected address code of the new LED device.