1results about How to "Delay premature failure" patented technology

The present application relates to the technical field of electrical control, and particularly relates to a load prediction-based intelligent tap-changer method and system for distribution transformer without power interruption. Multi-source operation data of the load voltage regulating unit of the distribution transformer is loaded first to accurately evaluate the remaining life thereof; then the voltage qualified dead zone width and the double-target optimization function weight coefficient are dynamically set according to the remaining life, and the minimum action interval for tap-changer is configured in combination with the historical action frequency; when the voltage is out of limit, the tap position instruction is generated through double-target optimization, and the tap-changer is executed according to the instruction and the interval and the action information is updated, so that the dynamic balance between the voltage quality and the switch life is realized, and the frequent tap-changer is inhibited. The dynamic balance between the voltage quality guarantee and the load tap changer life protection in the process of tap-changer without power interruption for the distribution transformer can be realized.