10 results about "Reactive load" patented technology

An antenna of a communication device includes a first antenna element operatively coupled to a transmitter of the communication device, the first antenna element configured to radiate a first signal generated by the transmitter; a second antenna element operatively coupled to a receiver of the communication device, the second antenna element configured to receive signals; and at least one third antenna element operatively coupled to at least one first reactive load, the at least one third antenna element configured to radiate a second signal modified in accordance with the at least one first reactive load, the second signal being induced at the at least one third antenna element by the first signal, and the at least one first reactive load being configured to modify the second signal to destructively cancel with a third signal induced at the second antenna element by the first signal.

According to one embodiment, a power amplifier includes a plurality of switches and an output tank network. One or more of the switches are configured to generate one or more first intermediate waveforms having one or more first fundamental frequency components, and one or more of the switches are configured to generate one or more second intermediate waveforms by chopping the one or more first intermediate waveforms with controllable timing. The second intermediate waveforms have one or more second fundamental frequency components that are controllably reduced from those of the one or more first intermediate waveforms. The output tank network is configured to filter the one or more second intermediate waveforms to provide an output waveform to a load, the output waveform having one or more third fundamental frequency components. In some cases, all switches achieve zero voltage switching under different power and load conditions with resistive and reactive loads.

A working machine (100) using a DC power system (700) that isolates reactive loads is described herein. A work machine (100) uses a machine power distribution unit (712) that receives direct current power from two or more battery packs of a power unit, where each of the battery packs delivers power on a separate direct current bus. A machine power distribution unit (712) of the work machine (100) receives power from the battery and is used to isolate power using the bus connector. One of the battery packs supplies power to one DC bus of the work machine (100), and the other battery pack supplies power to the other DC bus of the work machine (100). A reactive load powered by one of the battery packs is electrically disconnected from another reactive load powered by another battery pack.

This invention discloses a method, device, electronic equipment, and storage medium for real-time reactive power control in distribution networks based on co-simulation, belonging to the field of smart distribution network operation control. The method includes: acquiring real-time active power values ​​of each photovoltaic inverter in the distribution network, as well as real-time active load values ​​and real-time reactive load values ​​of each load node; generating an initial population containing multiple sets of reactive power control vectors based on the real-time active power values; determining a target reactive power control vector from the initial population through iterative optimization, and controlling each photovoltaic inverter to adjust its power according to the target reactive power control vector. By implementing this invention, the problems of cumbersome modeling and difficulty in adapting to complex distribution network topology changes caused by relying on the construction of explicit mathematical models in existing technologies, and difficulties in convergence or even no solution in optimization under severe source-load fluctuations due to the use of hard voltage constraints, can be solved.

This invention discloses a distributed AC optimal power flow solution method based on a multi-branch neural network, comprising: establishing an AC optimal power flow model; modeling the power system as a weighted graph based on complex network theory, and using the Louvain algorithm to perform community partitioning on this weighted graph; training a multi-branch DNN model for the entire power system, and using this model to learn the mapping relationship between input features and output features; using the trained DNN model to provide predicted voltages of non-zero injected nodes in the region using input features; calculating the voltages of ZigBs (Zones of Injection) using the Kron simplification method; obtaining predicted active and reactive load values ​​based on the voltages of the ZigBs and the provided load, and obtaining the demand load through the predicted load values. This invention can effectively reduce the network size, improve training efficiency, and enhance the accuracy of the solution. Furthermore, its flexibility and robustness make it more capable of handling future complex power system optimization tasks.

1. Name of the product in this design: High-voltage capacitor switching switch. 2. Application of this design: This design is used for the frequent switching on and off of high-voltage active or reactive loads. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

According to one embodiment, the power amplifier includes a plurality of switches and an output tank network. One or more of the plurality of switches are configured to generate one or more first intermediate waveforms having one or more first fundamental frequency components, and one or more of the plurality of switches are configured to generate one or more second intermediate waveforms by chopping one or more of the first intermediate waveforms at a controllable timing. The second intermediate waveforms have one or more second fundamental frequency components that are controllably reduced from the fundamental frequency components of one or more first intermediate waveforms. The output tank network is configured to filter one or more second intermediate waveforms to provide an output waveform having one or more third fundamental frequency components to the load. In some cases, all switches achieve zero-volt switching under different power and load conditions with resistive and reactive loads.

The invention discloses a power-traffic coupling system prevention and control method for toughness improvement. The method comprises the following steps: 1) obtaining network parameters and operation parameters of a power system and a traffic system; 2) acquiring scene data, including active load and reactive load of a power system, travel demands of different starting and ending points in a traffic system, and proportions of electric vehicles; 3) based on the acquired network parameters, the operating parameters and the scene data of the two systems, constructing an operating constraint under a conventional working condition and an operating constraint under a fault working condition; and 4) based on the constructed constraint, taking a price signal and distributed power supply output as regulation and control objects, and taking minimization of the operation cost of the two systems under a conventional working condition as a target function, establishing a power-traffic coupling system prevention and control model oriented to toughness improvement, and solving to obtain a prevention and control strategy for ensuring the operation safety of the power-traffic coupling system after the fault.

Embodiments of the present disclosure disclose an energy storage device installation method, device, electronic device and computer readable medium. A specific embodiment of the method comprises: obtaining node topology data, various line parameter data, new energy output matrix, active load matrix and reactive load matrix; generating active net injection power matrix and reactive net injection power matrix; generating voltage deviation average data, out-of-limit node number set, node out-of-limit voltage sensitivity matrix and power sensitivity matrix; generating time-series out-of-limit voltage sensitivity matrix; generating time-series power sensitivity matrix; determining energy storage access point data sequence of the energy storage device; and controlling a mechanical arm to install at least one energy storage device to at least one corresponding installation point. The embodiment can reduce installation resource waste when installing the energy storage device.

The present disclosure relates to an antenna arrangement including a first antenna configured to operate within a first frequency band and a second antenna configured to operate within a second frequency band. The first frequency band is higher than the second frequency band. Further, the second antenna is at least partly arranged within an illumination-field of the first antenna. Furthermore, the second antenna includes a dipole structure segmented into a plurality of electrically conductive sections, wherein each electrically conductive section is coupled to an adjacent electrically conductive section by a reactive load section.