6results about How to "Avoid load concentration" patented technology

The invention provides a distribution network line dynamic optimization method based on multi-fault mode analysis, and relates to the technical field of distribution network management. Comprising the following steps: acquiring electrical parameters and real-time monitoring data of each fault section in a distribution network line, and acquiring a topological structure, a load demand and historical fault data of the distribution network line; carrying out load distribution optimization on the distribution network lines by adopting a dynamic load optimization algorithm according to the topological structure and the load demand of the distribution network lines in combination with the electrical parameters and the historical fault data, and adjusting the load distribution of each distribution network line based on optimization; and when a distribution network fault occurs, positioning a fault point and implementing a repair measure by combining the topological information of the distribution network and the electrical parameters of the fault section. According to the invention, by constructing the multi-fault mode analysis model, the fault occurrence position of the distribution network is detected in real time, and the fault point is quickly positioned; and in combination with an optimized repair strategy, the fault recovery time is effectively shortened, and the distribution network recovery efficiency is improved.

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 low-shrinkage joint structure suitable for bridge widening and reconstruction projects, belonging to the field of bridge reconstruction technology. Its key technical features include an old bridge main body, a new bridge main body, a buffer component, and a support component. A joint is pre-installed between the old and new bridge main bodies. The buffer component is located within the joint and includes a top plate, a bottom plate, and a buffer plate. The buffer plate abuts against the inner wall of the joint. A connecting column is fixedly connected between the top and bottom plates. Two symmetrically distributed sliding sleeves are fitted onto the connecting column, and a spring abuts between the two sliding sleeves. A connecting rod is hinged between the sliding sleeves and the buffer plate. The technical effect is that by setting up the buffer component and support component, cracks caused by rigid tension are avoided when the new bridge main body settles or shifts laterally. This flexible buffer mechanism can control the relative displacement at the joint within a safe range, effectively eliminating stepped misalignments on the bridge deck and ensuring driving safety and smoothness.

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.

A vehicle air conditioning system is provided, and the vehicle air conditioning system includes: a heating duct through which internal air and external air are introduced; and a cooling duct through which internal air and external air are introduced. A condenser is provided in the heating duct, and an evaporator is provided in the cooling duct and connected to the condenser. A phase change material stores thermal energy of the internal air passing through the heating duct and the cooling duct. An internal / external air door controls the mixing of the internal / external air introduced into the heating duct and the cooling duct, and a phase change material door controls whether the external air introduced through the heating duct and the cooling duct passes through the phase change material.

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.