38 results about "Power margin" patented technology

The invention provides a charging pile power adaptive regulation and control method and device, and relates to the technical field of power adaptive regulation and control. The method comprises the following steps: firstly, setting regulation and control points according to a preset time interval, collecting a station total incoming line available power upper limit, total active power and charging state data of each charging pile, and calculating a demand priority score of each charging pile based on a current battery charge state and a historical power distribution condition; generating a plurality of candidate strategies according to positive and negative total power margin, and respectively implementing differential power increase and decrease for high and low demand priority piles; according to the charging rate curve, simulating the total charging completion time of all the charging piles under each strategy, selecting the strategy with the shortest total time as a comprehensive optimal strategy, and determining the target distribution power of the next regulation and control point of each pile; and finally, smoothly issuing a power instruction to a power control unit of each pile through slope rate limitation. On the premise of guaranteeing the safety of the power grid, the overall charging efficiency and the user satisfaction degree of the station can be remarkably improved.

The invention relates to the technical field of wireless communication, and discloses a design method for a broadband Mesh networking communication terminal radio frequency module, which comprises the following steps: designing the overall structure of the radio frequency module, and optimizing the design of a receiving link, a transmitting link and a transceiving logic control unit based on a radio frequency chip. The transmitting link adopts a preceding-stage, middle-stage and final-stage three-stage power amplification structure and is provided with graded power headroom, and the core is that the transmitting-receiving logic control unit takes a radio frequency chip as a core and synchronously controls the radio frequency switch of the receiving link and the amplifier bias of the transmitting link through an SPI (Serial Peripheral Interface) bus; the radio frequency module designed by the method is high in output power, low in noise, high in reliability and strong in anti-interference capability, can be used for realizing quick and reliable switching of transmitting and receiving states and frequency point selection of a frequency hopping filter, and is integrated with a circulator standing wave protection mechanism to effectively absorb reflection power and protect a power amplifier. The radio frequency module designed by the method is high in output power, low in noise, high in reliability and strong in anti-interference capability; the method is especially suitable for high-speed frequency hopping broadband Mesh ad hoc network communication terminals.

The invention provides a power headroom reporting method, terminal equipment, a storage medium and a program product. The method comprises the steps of determining a type 3 power headroom report (PHR) of a first sounding reference signal (SRS) according to a first parameter, and reporting the type 3 PHR of the first SRS. According to the method provided by the invention, the accuracy of reporting the PHR by the terminal in a heterogeneous transmission mode can be improved.

The invention relates to the technical field of energy storage system parallel control, and particularly discloses an optimization control method and system based on an energy storage inverter, and the method comprises the steps: building a phase cooperation matrix; constructing a weighted parallel network operator, analyzing the dynamic change of the maximum characteristic value based on a percolation phase change theory, and generating a percolation early warning signal in combination with an inversion probability coefficient; supercells are divided through a reformed group algorithm; solving a virtual impedance scale transformation coefficient fusing the maximum characteristic value of the super-cell and a power margin correction term, dynamically configuring the virtual impedance scale transformation coefficient, and injecting a chaotic disintegration signal to cut off long-range correlation; monitoring the percolation long-range correlation disintegration degree and the circulation entropy, and judging whether the system is stable or not; the system comprises a collaborative acquisition module, a phase change analysis module, an anchor point analysis module, a signal injection module and a stability analysis module. The method is beneficial for suppressing circulating current resonance and synchronous instability of multi-inverter parallel connection, and is suitable for a large-scale energy storage cluster grid-connected or off-grid operation scene.

This application discloses a wind power allocation control method, which includes: dividing a regional wind-storage system into domain-level control units and group-level control units, wherein each domain-level control unit contains at least one group-level control unit; constructing a power transmission cross-section based on the transmission line groups of all group-level control units within the domain-level control unit, and calculating the total power margin of the power transmission cross-section; allocating the total power margin to each group-level control unit under the domain-level control unit; and performing power compensation based on the energy storage power station to match the total output power of each group-level control unit with the allocated power margin. This method allocates the power margin to the "group," which can solve the problem that power dispatching is difficult to control every wind farm at the same time, thus improving the stability of the wind farm.

This invention proposes an adaptive droop control method for dynamically correcting DC voltage, comprising: establishing a mathematical model of the voltage source converter in a two-phase rotating coordinate system based on the physical model of the voltage source converter; calculating the available power margin and DC voltage variation of the converter station based on real-time measured active power and DC voltage; incorporating the real-time power margin and DC voltage deviation into the droop coefficient based on the traditional droop control strategy of the converter station, while optimizing the active power command value; and establishing an additional DC voltage stabilizer, which automatically adjusts the active power command value during power disturbances, thereby reducing the DC voltage variation, using the DC voltage variation as input. This invention rationally allocates the unbalanced power on the DC side and approximately achieves zero-error regulation of the DC voltage, effectively improving the stability of system operation. Simulation results show that this invention outperforms conventional droop control strategies and improved droop control strategies under different simulation conditions.

Certain aspects of the disclosure are directed to an apparatus for wireless communication. In some examples, the apparatus may be a user equipment (UE) configured to select a power headroom (PH) value associated with: a default PH configuration of the apparatus, a signal output for transmission to a first network node of a first serving cell of a first cell group, or the signal output for transmission to a second network node of the first serving cell of a first cell group. In some examples, the UE may output, for transmission to a second serving cell of a second cell group, a PH report comprising the selected PH value, wherein the PH report is output for transmission via a first slot.

The present application belongs to the technical field of production management informatization and resource operation and optimization, and relates to a kind of underground charging chamber resource dynamic scheduling management system and method, comprising: data acquisition unit gathers underground mobile equipment data and exports discrete feature matrix;Priority arbitration unit calculates energy consumption throughput deficit margin according to job plan and energy consumption constraint, and establishes time sequence emergency degree weight factor in combination with shift handover buffer time to output priority comparison result;Scheduling matrix generation unit brings total available power margin as reverse constraint condition into the path planning process of discrete feature matrix to establish flexible time slice allocation mechanism, according to priority comparison result, the time slice duty cycle of each charging channel and power allocation quota are constrained, and charging sequence and resource occupation scheduling table are output, the present application reconstructs flexible time slice allocation mechanism by optimizing scheduling management decision algorithm, and realizes fine collaborative configuration of production resources and equipment scheduling.

This application relates to the field of multi-terminal flexible DC transmission system equipment, specifically to a method and system for adaptive adjustment of droop coefficient in a multi-terminal flexible DC transmission system. The method includes: real-time monitoring and acquisition of local electrical quantities; inputting the electrical quantities as input variables to a main fuzzy logic controller; outputting an initial adjustment amount for the droop coefficient; inputting the absolute values ​​of the real-time power margin deviation and DC voltage deviation to the corresponding auxiliary fuzzy logic controllers to obtain a power margin weighting factor and a DC voltage weighting factor, which are then used to weight and correct the initial adjustment amount to obtain the droop coefficient adjustment amount; adding the droop coefficient adjustment amount to the initial droop coefficient to obtain the real-time droop coefficient; and performing amplitude limiting processing on the real-time droop coefficient to obtain the final real-time droop coefficient; applying the method to the droop controller of the corresponding converter station to complete the adaptive adjustment of the converter station's output characteristics, thus forming a hierarchical intelligent decision-making system.

The invention discloses a power interface converter stability control method for a power-steam cogeneration system, and the method comprises the following steps: collecting a hydrogen energy storage state, a cogeneration unit operation state and an electric quantity, and constructing a comprehensive feasible region containing thermoelectric coupling constraint and ramp rate limitation; mapping an original power instruction into the feasible region and performing slope shaping to obtain a target power reference value; calculating an available energy margin and a fast power margin based on a physical boundary, and dynamically and cooperatively scheduling inertia and damping parameters of the virtual synchronous machine according to the available energy margin and the fast power margin; realizing grid-connected and off-grid seamless switching in combination with current margin gating logic; according to the invention, the system stability and the electric energy quality under complex working conditions are effectively improved.

The invention relates to a direct-current sending power distribution strategy, which comprises the following steps of: constructing and calculating a direct-current channel power distribution margin index and a new energy power generation power proportion prediction value of a sending-receiving end power grid; constructing and calculating a new energy power generation proportion change index of the direct-current transmitting-receiving end power grid, and judging whether a flexible resource adding direct-current power margin allocation scheme under a load working condition needs to be started or not; and constructing a sending end direct current sending power distribution strategy. Based on new energy power generation proportion prediction and change trend analysis, direct current channel power distribution is dynamically optimized, new energy is preferentially added, flexible resources of a sending end and a receiving end are accurately called, space-time cooperative adjustment is achieved, the channel utilization rate and the new energy consumption rate are remarkably improved, and wind and light curtailment is effectively reduced; through quantification of direct current margin and adjustable resource linkage, system stability and economy are considered, responsibility sharing is clear, different new energy proportions and power grid structures are adapted, and the engineering generalization performance is high.

The invention provides an electric power spot market demand-based power plant operation strategy generation method and system. The method comprises the steps of obtaining real-time demand data and frequency modulation capacity demand data of an electric power spot market and real-time operation parameters of a power plant; determining a safe operation boundary parameter set of the power plant at the current moment according to the real-time operation parameters, wherein the safe operation boundary parameter set comprises a water leveling load upper limit, a water leveling load lower limit, an adjustable power margin and a water level safety margin; and according to the real-time demand data, the frequency modulation capacity demand data and the safe operation boundary parameter set of the electric power spot market, generating a hydro-generator automatic vibration area crossing strategy and / or a hydro-generator intelligent start-stop strategy. According to the technical scheme provided by the invention, dynamic boundaries such as water level safety and leveling water load are embedded in the decision process, so that safe, economical and automatic optimized operation of the power plant in a spot market environment is realized.

This disclosure relates to 5G or 6G communication systems for supporting higher data transmission rates. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes: receiving a radio resource control (RRC) reconfiguration message, the RRC reconfiguration message including information indicating whether to report a power headroom report (PHR) regarding a assumed physical uplink shared channel (PUSCH); identifying that at least one PHR is triggered; and transmitting a media access control-control element (MAC CE), the MAC CE including: at least one C i Field, at least one C i The field indicates the presence of the power margin PH field of the serving cell with serving cell index i, and at least one E k Field, at least one E k The field indicates the presence of the maximum power of the assumed PUSCH field for the kth serving cell among the serving cells in which its PH field exists, where the serving cells are indexed in ascending order of serving cell index i, starting with the primary cell (PCell) and then the other serving cells.

The invention relates to the technical field of power grid voltage fluctuation suppression, in particular to an active power distribution network voltage fluctuation suppression method and device, equipment and a storage medium. Determining a plurality of first sensitive indexes according to the current voltage of the first target load feeder line and the first current compensation amount; determining a first voltage compensation amount according to the voltage deviation and / or the voltage fluctuation value of the first target load feeder line; and finally, determining a plurality of reactive compensation amounts according to the first voltage compensation amount, the plurality of first sensitive indexes and the reactive allowance of the plurality of power supply feeders. According to the invention, the power supply feeder is selected according to the first sensitive index to compensate the voltage of the target load feeder, the reactive adjustment amount is small, the voltage compensation efficiency is high, the influence on the voltage of other load feeders is small, and more obviously, the voltage fluctuation is compensated through reactive power, the consumption of the new energy is not influenced, and the consumption rate of the new energy is improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information corresponding to power headroom reporting associated with simultaneous transmissions on a plurality of uplink channels, the configuration information indicating a maximum total transmit power limit associated with the simultaneous transmissions. The UE may transmit, based at least in part on the configuration information, a medium access control (MAC) control element (MAC CE) that includes at least one power headroom report corresponding to the plurality of uplink channels. Numerous other aspects are described.

The application discloses a power distribution cabinet distributed control system based on GCS, belongs to the technical field of power distribution systems, and can acquire safe and distributable power margin data based on actually measured power margin and a Monte Carlo method to predict power margin, so that power distribution of each loop is dynamically adjusted according to the differentiated charging demand of users, a control instruction is issued to a current limiter in series with a load side, the equivalent impedance of the current limiter is adjusted, and the current of the corresponding power supply loop is adjusted to realize power distribution. Compared with the prior art, the electric resource allocation of the application is more reasonable, the personalized charging demand of different users is taken into account, and the service flexibility of charging piles and user experience are improved.

The invention provides an LDPC-assisted non-orthogonal multiple access interference elimination method, receiving method, sending method and device, and relates to the technical field of transmission, and the interference elimination method comprises the steps: carrying out the continuous interference elimination of a non-orthogonal multiple access signal recovered from an optical signal, so as to obtain a large signal and a small signal, performing LDPC decoding on the large signal to obtain a decoded bit sequence; and reconstructing the large signal based on the decoding bit sequence to obtain a target large signal, and obtaining a target small signal based on the target large signal and the non-orthogonal multiple access signal. According to the invention, the noise generated by the judgment error of the large signal on the small signal can be effectively reduced in the non-orthogonal multiple access interference elimination process, the error rate of the small signal can be effectively reduced, the application performance of the small signal can be improved, and the power margin can be more reasonably utilized; and the reasonability of distributing the signals to the users can be improved to improve the user experience.

The present disclosure provides a method, device, user equipment, base station and storage medium for power headroom reporting, which belong to the field of communication technology. The method includes: receiving configuration information sent from a base station, indicating that the UE supports PHR reporting of a single or multiple TRPs in one carrier; receiving power control parameters supporting at least one TRP corresponding to at least one carrier sent from the base station; receiving a PHR reporting trigger condition of at least one TRP sent from the base station; and triggering PHR reporting of at least two TRPs corresponding to each carrier according to the power control parameters and the reporting trigger condition. The embodiment of the present disclosure provides a PHR reporting method adapted to a multi-TRP scenario, and ensures effective allocation of network resources.

A bandwidth upgrade control method and device for an optical access network, and a readable storage medium, relating to the technical field of optical communications, comprising: when it is detected that a target client needs to be switched to a target high-order code pattern, determining a link budget margin of the target client under a current code pattern; determining a target to-be-adjusted margin according to a target signal power margin required by a target client for switching from a current code pattern to a target high-order code pattern and the link budget margin; and adjusting the splitting ratio of an adjustable optical distribution network where the target client is located based on the target allowance to be adjusted, and controlling the host end and the target client to be modulated to a target high-order code pattern so as to realize network bandwidth upgrading of the target client. According to the invention, the flexibility of the optical access network can be improved, so that the bandwidth upgrading requirement is met.

This invention relates to the field of wireless communication management technology, specifically disclosing a wireless communication reselection method supporting network slicing. By real-time fusion of battery terminal voltage, current transient rate, and RF module transmit power margin values, the dynamic voltage drop characteristics of battery internal resistance and inductive load under current abrupt changes are incorporated into the prediction model. This accurately generates voltage sag trajectories covering key future time windows, and intelligently compares these trajectories with the linearity maintenance threshold of higher-order modulation modes. This achieves proactive intervention against communication link interruption risks. Through an iterative optimization-based dynamic adjustment strategy for modulation order, low-power slice configurations are intelligently matched while maintaining communication link integrity. This not only avoids the risk of link failure or shutdown caused by the power system and communication module competing for power, but also significantly improves the continuous mission execution capability and system robustness of UAVs in complex maneuvering scenarios, resulting in a qualitative leap in logistics delivery efficiency and reliability.

A communication device, a base station, and methods for the communication device and the base station are provided. The communication device includes a transceiver and circuitry. The circuitry generates a power headroom report that includes a power reduction requirement indication for each of the one or more groups of multiple spatial directions. The transceiver transmits a power headroom report. The circuitry may also determine whether a power reduction requirement is indicated for each of the plurality of spatial directions or for each of the one or more groups of the plurality of spatial directions, and generate a power margin report based on a result of the determination.

The invention specifically discloses a self-adaptive adjustment method and system for an active frequency modulation coefficient of a converter of a wind turbine generator, and the method comprises the steps: firstly, obtaining a power margin and thermal margins of the converter and a generator in real time, and precisely sensing a comprehensive operation boundary of the unit under a current working condition; and furthermore, the multi-dimensional physical constraints are quantified into instant, short-term and long-term multi-time-scale available standby based on thermal time constant differences of different devices, so that refined evaluation on the real frequency modulation capability of the unit is completed. And finally, dynamically converting the evaluated available standby capability into an optimal adaptive frequency modulation coefficient according to actual characteristics of power grid frequency disturbance. The technical contradiction caused by a fixed coefficient is solved, so that the frequency modulation response is not blind instruction execution any more, but is an intelligent behavior tightly coupled with the self safety bearing capacity of the unit, and the effectiveness of frequency modulation and the safety of equipment can be ensured to reach the optimal balance.

The application discloses an active IRS-assisted mobile communication system power distribution method, comprising the following steps: step 1, obtaining CSI of BS-user link, IRS-user link and BS-IRS link, making CSI of all links available at IRS, establishing user QoS requirement and active IRS power margin model; step 2, establishing an optimization model, minimizing the transmission power at the base station under the condition of meeting the user QoS requirement and the maximum power margin of the active IRS; step 3, solving the optimization model by using a bilinear transformation and an inner approximation algorithm to obtain a power distribution scheme. The method can achieve considerable power saving.

Disclosed herein are methods and systems for optimizing an optical signal in an optical network having a hub node configured to receive an optical signal comprising a plurality of subcarrier groups each having a signal quality and a transmission output power, including a method that may comprise: determining, a first subcarrier group of the plurality of subcarrier groups with a lowest signal quality lower than a required signal quality margin; determining, a second subcarrier group of the plurality of subcarrier groups that has a highest transmission output power margin, Determining, that the transmission output power margin of the second subcarrier group is above a level needed to increase the lowest signal quality by a required signal quality increase; and sending signals to a first leaf node and a second leaf node causing the first leaf node to swap transmission positions of the first subcarrier group and the second subcarrier group.

The application discloses a kind of energy storage cluster power margin observation methods based on event triggering mechanism, belong to energy storage system control technical field, the method includes: the error between the total power margin variable of energy storage cluster and the actual value of energy storage cluster power capacity is estimated to obtain the power estimation error variable of each energy storage unit, and then the trigger variable is set using power estimation error variable;Further utilize trigger variable, power estimation error variable and its preset trigger threshold value to represent trigger function;By designing each distributed power source only when trigger function value is greater than zero, the total power margin variable of energy storage cluster in the next step is updated, the communication amount and the amount of calculation of energy storage control of power system can be effectively reduced, so as to solve the technical problem that serious communication resource and computing resource waste caused by frequent information exchange when power system is in steady state operation.

This invention belongs to the field of wireless communication technology and provides a communication link adaptive resource allocation system. The system includes obtaining the amount of data to be transmitted in the current scheduling period and the currently active bandwidth; establishing a transmission rate analysis model to generate a transmission rate evaluation index, thereby determining whether a bandwidth reconfiguration process needs to be triggered; if so, pre-setting a candidate bandwidth configuration set; obtaining the estimated total power consumption of the RF front-end and digital baseband and the uplink power margin reported by the terminal, generating a thermal risk index, a coverage limitation index, and a service quality risk index respectively, and generating a comprehensive risk index through a comprehensive risk analysis model; and selecting the bandwidth that minimizes the comprehensive risk index as the optimal transmission bandwidth configuration value based on the candidate bandwidth configuration set and the comprehensive risk index, thereby completing the resource allocation. This invention can improve the stability and reliability of communication links and avoid communication interruptions or decreased equipment reliability caused by unbalanced resource allocation.

Communication terminal device comprising: a plurality of antennas; a transmitter-receiver configured to receive a message indicating to a first antenna of the plurality of antennas for use as a transmission antenna by the communication terminal device;a control device configured to determine whether a second antenna of the plurality of antennas has a higher power margin than the first antenna according to a previously determined power measurement, wherein the power measurement involves a comparison of the power margin of the first antenna with the power margin of the second antenna over a predetermined time interval, and to control the transmitter-receiver to use the second antenna for transmission if the second antenna has a higher power margin than the first antenna, wherein the control device is configured, when controlling the transmitter-receiver, to use the second antenna for transmission, and to control the transmitter-receiver to use the first antenna for the transmission of a reference signal scheduled for the second antenna.

The invention discloses a wind power distribution control method, and the method comprises the steps: dividing a regional wind storage system into a domain-level control unit and a group-level control unit, and the domain-level control unit comprises at least one group-level control unit; constructing a power transmission section based on the transmission line groups of all group-level control units in the domain-level control unit, and calculating the total power margin of the power transmission section; distributing the total power margin to each group-level control unit subordinate to the domain-level control unit; and executing power compensation based on the energy storage power station, so that the total output power of each group-level control unit is matched with the allocated power margin. According to the method, the power margin is allocated to the group, the problem that power scheduling is difficult to control each wind power plant at the same time can be solved, and the stability of the wind power plants is improved.

The application discloses an RFID cut-off power measurement method, device and system, comprising the following steps: 1, for the target tag model, pre-measuring and constructing the mapping relationship between the backscattering power index and the power margin; 2, in the actual environment, controlling the RFID reader to initiate a single query to the target RFID tag at any transmission power, obtaining the received signal strength returned by the tag, and calculating the actual backscattering power index; 3, according to the calculated backscattering power index, querying the mapping relationship to obtain the actual power margin, and subtracting the power margin from the actual transmission power to obtain the cut-off power of the target RFID tag. The application does not need to adjust the transmission power step by step and repeatedly measure, but realizes the rapid determination of the cut-off power through the single backscattering power index, significantly reduces the measurement delay and communication overhead, and is compatible with the standard protocol and can be directly applied to the commercial RFID system.

The application provides a power transmission and distribution network coordinated emergency voltage control method and system, comprising: obtaining wide-area measurement data, calculating generator reactive power margin, when the generator reactive power margin is lower than a set value, including an active power distribution network into power transmission network level control, and calculating reactive power demand of the power transmission network on each active power distribution network; judging whether the reactive power margin of the active power distribution network meets the reactive power demand; if yes, taking the difference between the total photovoltaic output of the power distribution network and the reactive power output support of the active power distribution network and the reactive power demand of the power transmission network as the target, calculating the reactive power output support of the active power distribution network; otherwise, the reactive power output support of the active power distribution network is the reactive power margin of the active power distribution network; applying the reactive power output support of the active power distribution network to the power transmission network, judging whether the load bus voltage meets the preset requirement, if yes, stopping the emergency voltage control; otherwise, returning to calculate the generator reactive power margin until the preset requirement is met. The voltage stability of the power transmission and distribution network is improved.