POWER CONTROL APPARATUS IN SEAWATER DESALINATION SYSTEM, ESPECIALLY OPERATING SYSTEM STABLE BY PREVENTING STOP OF SYSTEM DUE TO ERROR OF SYSTEM MANAGER

摘要

PURPOSE: A power control apparatus in seawater desalination system is provided to operate the system stable by installing an additional controller separated from the main controller preventing the stop of the system due to the error of the system manager in the main controller. CONSTITUTION: A power control apparatus in seawater desalination system includes a main controller(10) and a sub-controller(20). The main controller is provided with a power monitor and controller to monitor the state of the middle voltage and low voltage applied to the main controller and sub-controller and notifies the monitored state to the main controller. The sub-controller is provided with a plurality of low power controllers(25-1,25-2,25-3,25-4). And, each of the low power controllers prevents the low voltage applied to the corresponding sub-controller after the generated abnormal low voltage is notified to the main controller by monitoring the low voltage applied to the sub-controller.