2results about How to "Reduce write operations" patented technology

The embodiment of the invention discloses a metering error compensation method and device based on a post-stage load of an electric energy meter, and the method comprises the steps: obtaining configuration parameters preset in a storage of the electric energy meter, the physical state of a relay, and the metering data of each phase; setting a reactive compensation value of a metering loop to be zero and then sending the reactive compensation value to a metering chip, if the relay is in a closed state, calculating to obtain capacitive reactive power based on configuration parameters in the electric energy meter memory and the metering data of each phase, and sending the capacitive reactive power to the metering chip; and reactive offset compensation is carried out based on the data received by the metering chip. According to the application, the physical state of the relay is taken as a judgment basis of compensation enabling, so that the power utilization condition of a user side can be reflected more intuitively, invalid compensation on a no-load capacitor in a power-off state is further avoided, and the accuracy of power factor assessment, reactive compensation strategy and transformer area line loss analysis is improved.

This invention discloses a drag-and-drop sorting method for list elements based on multi-level grouping in a device management platform. Specifically, it includes: receiving a drag-and-drop sorting request initiated by a client; parsing the request to obtain the object to be inserted (element), the target group (group), the preceding sorting value (a), and the following sorting value (b); determining whether the target group is empty; if empty, initializing the sorting value of the object to be inserted to a preset baseline value; determining the insertion type based on the existence of the preceding and following sorting values ​​(a and b); performing precision detection based on the preceding and following sorting values ​​(a and b); generating a new sorting value for the object to be inserted using the corresponding sorting value calculation model according to the determined insertion type; assigning the new sorting value to the object to be inserted and updating its group to the target group; and writing the updated sorting value and group information into a database to complete the drag-and-drop sorting process.