3results about How to "Avoid load concentration" patented technology

The invention provides a power distribution network partition optimization method and system. The method comprises the steps that a non-inductive load characteristic index set is constructed, non-inductive load characteristic indexes are constructed into characteristic vectors, electrical attributes of a power supply unit are constructed into attribute vectors, and then a two-dimensional evaluation model is constructed; obtaining a plurality of candidate partitions based on electrical attributes of the power supply units, calculating a comprehensive evaluation value of each load point and each power supply unit through a two-dimensional evaluation model, distributing each load point to the candidate partitions meeting a preset partition requirement through the comprehensive evaluation value, obtaining a preliminary partition scheme, constructing a global optimization model, and obtaining a final partition scheme; and optimizing each candidate partition to obtain a preliminary partition optimization scheme, constructing a corresponding power flow balance equation, and locally adjusting the preliminary partition optimization scheme to obtain a power distribution network partition optimization scheme so as to optimize the power distribution network partition. According to the invention, multi-dimensional evaluation is carried out on the power distribution network to optimize the reasonability of load division of the power distribution network, so that the operation reliability of the power grid is improved.

This utility model discloses a steel wire winding structure, relating to the field of steel wire processing. The key technical points are: it includes a roller, the surface of which is provided with a plurality of annular protrusions at intervals, the distance between adjacent annular protrusions being greater than the width of the annular protrusions. In this utility model, the concave-convex structure formed by the annular protrusions and grooves prevents the wound steel wire from shifting on the roller, ensuring uniform distribution of the steel wire on the roller and avoiding load concentration. A cloth sleeve acts as a buffer between the roller and the steel wire, preventing the edges of the annular protrusions from being larger than the steel wire and causing scratches, thus ensuring the quality of the steel wire. When there is no steel wire winding, the cloth sleeve is in a relaxed state, avoiding prolonged tension that would reduce the service life of the cloth sleeve.

The utility model discloses a transmission gear, which relates to the technical field of gears and comprises a fluted disc, base plates are integrally arranged on two sides of the fluted disc, the fluted disc is disc-shaped, a plurality of teeth are arranged on the circumferential wall of the fluted disc, and the teeth are distributed at equal intervals. And the fluted disc is also connected with an extension driving piece. The transmission gear disclosed by the utility model is provided with the extension driving piece and can also be set into transmission gears with different sizes so as to meet different requirements of equipment, and the problems that numerous precise instruments mentioned in the background technology are also produced along with the transmission gear, a gear set and a reduction gearbox move widely, various different types of gears are meshed with each other, and the cost is low in the prior art are solved. And in order to change the number, the model, the position and the like of the gears when the rotating speed is adjusted again, the adjusting process is tedious, the process of replacing the gears is simplified, and the effects of saving manpower and material resources are achieved.