6results about How to "Reduce line loss" patented technology

This application discloses a method for constructing a distributed DME ranging system, relating to the fields of navigation technology and network communication technology. The method involves mounting a ground-based DME antenna, a first remote radio frequency unit, a second remote radio frequency unit, and a radio frequency switch assembly on the top of a tower; placing a first response control unit, a second response control unit, and a status control unit in an equipment rack within a computer room, and installing a remote control unit in a monitoring room; designing a dual-backup architecture with three operating modes, selecting the backup mode according to different scenarios; after the interrogation pulse emitted by the aircraft's onboard interrogator is received by the ground-based DME antenna, it is forwarded to the currently operating transponder via the radio frequency switch assembly for processing and generation of a response pulse, which is then forwarded back to the ground-based DME antenna via the radio frequency switch assembly for response, thus achieving aircraft positioning. This method solves the problems of insufficient scenario adaptability and generalization capability of existing DME systems and reduces radio frequency cable loss.

This utility model relates to the field of prefabricated substation technology, specifically to a heat dissipation structure for a photovoltaic or wind-powered prefabricated substation. It includes a prefabricated box with a top plate. The box is divided into a transformer compartment, a high-voltage compartment, and a low-voltage compartment. The low-voltage and high-voltage compartments are separated from the transformer compartment by partitions. The low-voltage compartment contains a low-voltage cabinet. Multiple elongated ventilation slots are spaced parallel to each other along the height of the low-voltage cabinet on the upper and lower parts of the partition. Tin plates are installed at the connection holes between the low-voltage cabinet and the transformer copper busbars on the partition. A mesh door separates the front of the transformer compartment from the box door. The beneficial effects of this utility model are: the heat dissipation structure for a photovoltaic or wind-powered prefabricated substation achieves air circulation through the partition with ventilation slots and the mesh door. It also features a box door sealing plate with louvers and ventilation holes, and includes an air conditioner and a fan, providing effective heat dissipation for the box, thereby reducing line loss and copper loss and maintaining power supply efficiency.

This application discloses an adaptive configuration method, apparatus, device, and storage medium for JP cabinets, belonging to the field of JP cabinet load configuration technology. This application obtains a main node graph characterizing the real-time operating status of a distribution transformer area and a secondary node graph characterizing the future operating trend and adjustability of the distribution transformer area; it performs cross-graph feature fusion on the main node graph and the secondary node graph, and outputs adaptive configuration instructions for the nodes where each JP cabinet in the distribution transformer area is located based on the cross-graph feature fusion result; it sends the adaptive configuration instructions to the corresponding JP cabinets for execution and collects the operating status data after execution; based on the operating status data, it synchronously updates the main node graph and the secondary node graph, and continuously optimizes the configuration parameters of each JP cabinet based on the updated main node graph and secondary node graph, thereby achieving the effect of accurately allocating the load of the JP cabinets.

The application discloses a kind of low-voltage distribution network governance device and method without CT voltage tracking, including three-phase four-wire transformer, the three-phase power line of pure three-phase load (1) is connected with the three-phase line of transformer corresponding, power quality management equipment (2) is accessed to the three-phase four-wire circuit of transformer, for balancing the voltage of three-phase line;Resistance component is accessed to the three-phase four-wire of transformer, in the front end of power quality management equipment (2), for adjusting the current and voltage in three-phase circuit, the application solves the comprehensive treatment of reactive power compensation, three-phase imbalance and end low voltage, overvoltage of distribution network in the case of canceling CT, ensure the efficient and economic operation of distribution network line, improve voltage quality;While reducing secondary accidents caused by equipment power quality management equipment itself failure, with reliable, convenient, safe and cost-reducing technical effect.

This utility model relates to the field of battery testing equipment technology, specifically to a pull-out needle box structure and a battery testing needle bed. The pull-out needle box structure includes a box body forming an internal chamber and a fixing frame for fixing the box body. A power module is integrated and installed in the chamber of the box body for powering the probes and for testing sampling. At least one cooling fan is provided in the chamber of the box body for dissipating heat from the power module. At least one probe interface is arranged on the bottom surface of the box body. The probe interface is electrically connected to the power module. The box body is detachably mounted on the fixing frame via a pull-out structure. The purpose of this utility model is to overcome the shortcomings of the prior art and provide a pull-out needle box structure and a battery testing needle bed, solving the problems of numerous cables, high line loss, inconvenient maintenance, and poor heat dissipation in the prior art.

The invention provides an adaptive distributed energy storage group scheduling and group control method and system, and the method comprises the steps: carrying out the clustering based on the current attenuation degree index, SOC adjustment rate index and communication delay index of each distributed energy storage unit in a transformer area, and the electrical distance between each distributed energy storage unit and other nodes, and obtaining a plurality of virtual energy storage clusters; calculating a performance index of each virtual energy storage cluster based on the performance parameter of the energy storage unit in each virtual energy storage cluster; inputting the performance index of each virtual energy storage cluster into a multi-objective optimization scheduling model to obtain a scheduling instruction of each virtual energy storage cluster; the scheduling instruction of each virtual energy storage cluster is decomposed to each energy storage unit and executed; according to the method, based on multi-dimensional performance index clustering, the internal homogeneity of virtual energy storage is high, the instruction execution consistency is high, and the regulation and control precision is improved; the on-site consumption rate of new energy is remarkably improved and the line loss is reduced through optimal scheduling; according to the method, online regrouping under dynamic changes such as energy storage aging and communication fluctuation is supported, and long-term effectiveness is guaranteed.