45 results about "Distributed power control" patented technology

The invention provides a protocol identification method and device for accessing a distributed power supply to a power grid, a medium and a terminal, and belongs to the technical field of communication. The method comprises the following steps: acquiring a first receiving message and a response type sent by distributed power supply control equipment, wherein the response type comprises a passive type and an active type; determining a protocol range corresponding to the first received message based on the response type; inputting the first receiving message and the protocol range into a preset first protocol identification model for analysis, and obtaining a first analysis result in the protocol range; and determining a protocol used by the distributed power supply control equipment based on the first analysis result. The identification accuracy and the identification efficiency of the protocol used by the control equipment can be improved.

The invention relates to the technical field of micro-grids, and discloses an AC micro-grid distributed power control method with quantitative event triggering. According to the method, due to droop control in an island DC micro-grid, distribution of reactive power and unbalanced power in a system cannot be guaranteed, and a distributed control method with quantitative event triggering is provided for solving the problem. According to the control scheme provided by the invention, communication is reduced on the basis of realizing reactive power and unbalanced power distribution among distributed power generation units by adding a designed distributed secondary controller with a quantitative event triggering method, and parts which cannot be accurately distributed can be readjusted by a negative feedback system through PI control; in addition, the proposed method does not need global power information, each distributed generator only communicates with a neighbor when meeting a triggering condition, the communication burden of a micro-grid communication network is greatly reduced, the stability of the method is proved through a Russell invariant set principle, and Zeno behaviors are also eliminated through an anti-security method.

The invention discloses an alternating-current micro-grid protection method and system based on reference point voltage waveform comparison, and the method comprises the steps: setting a first-stage reference point, a second-stage reference point and a third-stage reference point at at least A1, A2 and A3 positions of a protected line respectively; establishing a dual-port network model of a protected line and port electrical quantity, taking one port as a measurement point, and calculating the voltage of each level of reference point at the other port based on the voltage of the measurement point; and calculating the cosine similarity between the voltage waveform of the measurement point and the voltage waveform of each level of reference point, and taking the value of the cosine similarity corresponding to each level of reference point as the action criterion of each level of protection, thereby realizing the multi-level sectional protection of the protected circuit of the AC micro-grid, and determining the fault position at the same time. The method can expand the protection range, is not affected by branch loads or distributed power supply branches, is not affected by a distributed power supply control strategy, and can be suitable for a grid-connected operation mode and an island operation mode at the same time.

Some aspects of the present disclosure provide an adaptive sensing method that enables separate power control parameter configuration for uplink (UL) communication transmission or sidelink (SL) communication transmission and sensing transmission. When a signal or a channel is used for both communication and sensing, two sets of parameters may be configured, a first set of parameters for UL or SL communication and a second set of parameters for sensing. Some aspects of the present disclosure provide a distributed power control method that involves slow power ramping of a transmitted signal used for sensing. The distributed power control method may also include interference avoidance. Some aspects of the present disclosure provide a centralized power control method that involves, a centralized network side device, such as a base station, sending a signaling to adapt UE power to mitigate interference between UEs when interference is detected.

The invention discloses a distributed power supply cooperative control method based on transient dynamic characteristic adaptive driving, which adopts a multi-dimensional transient performance coupling evaluation function, unifies multiple targets including frequency, voltage, power angle and operation economy into a global optimization target, and fundamentally solves the defect of single target in the prior art. A collaborative strategy network based on dynamic context awareness is adopted, and a time sequence processing technology based on an attention mechanism is utilized, so that an intelligent agent can extract key transient dynamic characteristics from a local observation sequence, and the limitation of no memory and non-self-adaption in the prior art is broken through; according to the method, a cooperative control flow of a cooperative control strategy is provided, a high-performance learning type strategy is combined with a high-reliability safety monitor, the problem that safety and performance are difficult to be compatible is solved, fundamental transformation of distributed power supply control from passive, local and static rule-based modes is achieved, and the transient stability margin of a novel power system is remarkably improved.

The invention discloses a distributed power supply-based control method, system, equipment and medium, and relates to the technical field of distributed power supply control, and the method comprises the steps: collecting and preprocessing the real-time data of a distributed power supply, training a prediction model to optimize parameters, obtaining a load demand and power generation capability estimation, and adjusting the power based on a prediction result. Distributing active power according to a total load and a power contribution factor; setting a target power factor to calculate reactive power; monitoring voltage and load changes of a power grid in real time; dynamically selecting and adjusting a reactive power control strategy; and visualizing the running state and backing up the data to a database. Through closed-loop cooperation of data prediction, dynamic power control, value-oriented intelligent operation and maintenance and visual management, the stability, electric energy quality, operation and maintenance economy and management efficiency of the distributed power supply system are comprehensively improved.

The present invention discloses a distributed power control method based on edge computing, which belongs to the field of distributed power regulation technology. The method includes the following steps: first, based on the low-voltage distributed photovoltaic power station's feeder voltage level regulation requirements, data collection of distributed power intelligent gateway devices is carried out; power automatic control technology based on edge computing is proposed, and a distributed power intelligent gateway on-site control method is established; voltage regulation is performed according to on-site active / reactive control requirements; based on the performance requirements of the distributed power intelligent gateway device, hardware of the distributed power intelligent gateway device that supports information encryption and wireless communication is designed; and the proposed method is verified. The active distribution network based on distributed power provided by the present invention does not need to transmit data to the upper system for analysis as much as possible, and has good guiding significance for information access of the power grid dispatching system, distributed power control, etc.

Aspects of the present application provide an adaptive perception method that enables separate power control parameter configuration for uplink (UL) communication transmission or sidelink (SL) communication transmission and perception transmission. When a signal or channel is simultaneously used for communication and perception, two sets of parameters may be configured, a first set of parameters being used for UL or SL communication and a second set of parameters being used for perception. Some aspects of the present disclosure provide a distributed power control method that includes a slow power ramp-up for a perceived transmission signal. The distributed power control method may also include interference avoidance. Aspects of the present application provide a centralized power control method that includes when interference is detected, a centralized network side device (e.g., a base station) sends signaling to adjust UE power to reduce interference between UEs.

The invention discloses a distributed power control method for a building temperature control load cluster. The method comprises the steps that a state space model of a temperature control load is constructed based on thermodynamic characteristics of the temperature control load; an expandable communication network oriented to a large number of distributed temperature control loads is constructed; based on a state space model of a communication network topology and a temperature control load, the temperature control load and an adjacent load exchange variable information through a leader consistency protocol to serve as a control variable to update a power variable and a temperature variable of the temperature control load; and constructing a target function and a constraint condition to obtain an auxiliary control variable, and adding the auxiliary control variable to an original control variable to update a power variable and a temperature variable of the temperature control load again. According to the control strategy, the huge flexibility provided by the temperature control load cluster in the building is fully utilized to provide auxiliary service for the power grid, the fair distribution of the output and the comfort demand between the temperature control loads is ensured in the process of dynamically regulating and controlling the temperature control load cluster, and meanwhile, the privacy of the user is protected.

The invention discloses a micro-grid group control method and device, computer equipment and a computer program product. The method comprises the following steps: selecting a distributed power supply meeting a preset condition from a target microgrid group as a fixed distributed power supply corresponding to each of a plurality of microgrids; constructing a sparse communication network based on the fixed distributed power supplies corresponding to the plurality of micro-grids; based on a preset droop control algorithm, controlling a plurality of distributed power supplies corresponding to the plurality of micro-grids, and based on the sparse communication network, collecting distributed power supply control data; setting a distributed secondary frequency device and a distributed secondary voltage controller based on a preset time consistency algorithm and distributed power supply control data; and controlling the target microgrid group based on the distributed secondary frequency device and the distributed secondary voltage controller. According to the method, the technical problem that the real-time requirement of the micro-grid group on rapid coordination control cannot be met due to slow convergence speed of coordination control of the micro-grid group at present is solved.

During disasters, widespread power outages can occur, leading to delays and shortages in electricity supply. Furthermore, conventional power supply methods rely on fixed infrastructure, making it difficult to flexibly respond to fluctuations in electricity demand. [Solution] The present invention provides a power supply system that deploys or guides mobile distributed power sources to power demand locations based on power demand information relating to power demand locations. The system comprises distributed power sources, a control device, a communication network, and power demand points. The control device determines the placement or guidance of the distributed power sources based on the location information and power output of the distributed power sources and the power output required by the power demand points.

To provide a distributed power source control system, a power source control device, and a distributed power source control method that make it possible to use power effectively on regional independent grids that do not cause any defects when there are two or more regional independent power grids in an area divided by an area switch.SOLUTION: A distributed power source control system 1 includes a micro grid (MG) 100 having a plurality of distributed power sources and a power source control device. The plurality of distributed power sources is connected to each of two or more regional independent grids that exist in an area divided by an area switch 13 that is controlled by a management server that manages power grids. The power source control device controls the distributed power sources. The power source control device performs a first procedure to check whether defects have occurred in each of the two or more regional independent grids and a second procedure for performing independent operation of the regional independent grids that does not cause any defects without performing independent operation of the regional independent grids that is causing defects when an area is disconnected by the area switch.SELECTED DRAWING: Figure 1

The present invention belongs to the field of distribution network fault recovery and provides a distribution network fault recovery method and system that takes fault evolution into account under extreme weather conditions. The technical solution is to address the problems of inaccurate characterization of the fault evolution mechanism of distribution network equipment under extreme snowy weather and the inability of existing distribution network fault recovery methods to effectively characterize the control mode of distributed power sources. An active distribution network fault recovery strategy that takes fault evolution into account under extreme snowy weather conditions is proposed. First, the impact of the mechanical failure process of distribution network equipment and the uncertainty of distribution network power flow under extreme snowy weather conditions is clarified, the probability of equipment failure and the probability of system state transition are quantified, and a distribution network cascading fault evolution model based on improved random power flow is derived. Second, based on the regional division concept of point localization, the subordinate relationship between the master control node, slave control node, and load node in the island area is comprehensively considered. In combination with the master-slave control logic of the island, the constraints between the master control node, slave control node, and load node are derived, and a distribution network fault recovery model that takes reconstruction and island division into consideration is constructed. The flexible and changeable characteristics of the distribution network topology are utilized while improving the recovery capability of the distribution network.

To provide a decentralized power supply control system and a decentralized power supply control method that can appropriately control decentralized power supplies while detecting the life of or an abnormality in the decentralized power supplies.SOLUTION: A decentralized power supply system comprises: a first server that generates control commands controlling decentralized power supplies installed in facilities; and a second server that relays the control commands between the first server and the decentralized power supplies. The second server comprises a storage unit that stores measurement data related to the decentralized power supplies, and a calculation unit that calculates a predicted value of the measurement data with reference to a predetermined time. The first server includes a generation unit that generates the control commands on the basis of the predicted value of the measurement data.SELECTED DRAWING: Figure 1

The present invention provides a new energy distributed power control method and system, which belongs to the field of networked power supply technology. The control method includes: collecting meteorological data of a preset time; outputting the predicted power of the new energy distributed power system within the preset time according to the meteorological data through the mathematical model of the new energy distributed power system; obtaining the expected output frequency and expected output voltage of the new energy distributed power system; with the goal of achieving the expected output frequency and expected output voltage, the current predicted power is proportionally distributed through a droop controller; according to the proportional distribution result, the output voltage of each distributed power source in the new energy distributed power system is adjusted through a distributed average proportional integral control algorithm; according to the adjustment result, the output voltage of each distributed power source is secondary adjusted in combination with a demand response mechanism; the secondary adjusted output voltage is output as the output voltage of the distributed power source. The present invention can improve the stability of the existing power grid.

The invention discloses a power output adjusting method for a distributed power supply, and relates to the technical field of distributed power supply control, and the method comprises the steps: collecting the historical feature information of a power grid, predicting the features of the future power grid, and analyzing the power demand interval of the distributed power supply and the fluctuation parameters of the power grid; and based on the demand interval and the fluctuation parameter, optimizing power output to reduce impact on the power grid, obtaining optimal power, and adjusting output of the distributed power supply according to the optimal power. The technical problem of insufficient power adaptability caused by slow adjustment response time of the existing distributed power supply under the condition of complex power grid demand fluctuation is solved, and the technical effect of improving the adaptability of the power output of the distributed power supply and the power grid demand change is achieved.

The application provides a wind, light, hydrogen and storage direct-current micro-grid distributed control method and system, and belongs to the technical field of micro-grid distributed control, wherein the method comprises the following steps: adopting an EPP-MPPT algorithm based on a Newton-Raphson method to perform maximum power output control on a photovoltaic generator set in a photovoltaic power generation unit, adopting an IMPPT algorithm to perform maximum power output control on a wind power generator in a wind power generation unit, adopting a distributed power supply control strategy to adjust power imbalance among distributed power generation units, load demand and energy storage equipment, and dividing the whole power balance control process into an active part and a passive part. The application can effectively solve the current overshoot or undershoot problem of the traditional bus voltage signal control under the system power mutation of the distributed energy storage equipment.

The present application provides a distributed power supply control system and method, which determines the load factor of the target distributed power supply based on historical power consumption data; determines the power efficiency coefficient of each power supply node based on historical power generation data, and then uses all power efficiency coefficients and load factors to divide the power supply area of ​​the target distributed power supply into multiple power distribution areas; performs stability verification on the load degree of each power distribution area in the target distributed power supply through the power load entropy and load factor of each power distribution area, and obtains the load stability of each power distribution area; determines the load balance of the target distributed power supply through all load stabilities, and performs balanced adjustment on the power supply area of ​​each power node in the target distributed power supply based on the load balance. The above scheme can realize balanced scheduling and distribution of distributed power supply loads, thereby improving the load balance of the distributed power supply control system in load distribution.

In an example embodiment, a distributed power control system can include a datacenter and a remote master control system. The datacenter can include (i) computing systems, (ii) a behind-the-meter power input system configured to receive power from a behind-the-meter power source and deliver power to the computing systems, and (iii) a datacenter control system configured to control the computing systems and the behind-the-meter power input system. The remote master control system can be configured to issue instructions to the datacenter that affect an amount of behind-the-meter power consumed by the datacenter. The datacenter control system can receive, from a local station control system configured to at least partially control the behind-the-meter power source, a directive for the datacenter to ramp-down power consumption, and in response to receiving the directive, cause the computing systems to perform a set of predetermined operations correlated with the directive.

This application relates to the field of power control center technology, and in particular to a communication method and system for a distributed power control center system. It includes: establishing multiple power sub-regions; constructing communication architectures for each power sub-region and setting communication control strategies for each power sub-region according to a preset communication model; acquiring status monitoring data for each communication architecture and determining whether to generate correction instructions for each communication control strategy based on all status monitoring data; dividing the power system into multiple power sub-regions and selecting communication proxy points for each power sub-region; and distributing data processing pressure to each sub-region through a built-in processing sub-model, thus avoiding load risks to the control center due to high concurrency. By constructing multiple communication architectures for each power sub-region, hierarchical transmission of different data is achieved, improving the overall operating efficiency and stability of the power system.

To provide a dispersion power supply controlling system, a power supply controlling device, and a dispersion power supply controlling method capable of effectively utilizing a specific dispersion power supply in an area independent system.SOLUTION: A dispersion power supply controlling system comprises a dispersion power supply connected to an are independent system, a specific dispersion power supply connected to the area independent system, a transfer blocking device for linking the specific power supply with the area independent system, or paralleling off the specific dispersion power supply from the area independent system. The specific dispersion power supply is configured to be paralleled off from the area independent system according to parallel-off signals outputted from an administrative server administering a power system when failure is detected in the power system connected to the area independent system. The power supply controlling device comprises a control part for linking the specific dispersion power supply with the area independent system regardless of the parallel-off signals when the failure is not detected in the area independent system.SELECTED DRAWING: Figure 2

The present application relates to a kind of distributed power supply control systems for high-power laboratory, comprising: power distribution combination, multiple power supply combinations and multiple DC output units;The power distribution combination, multiple power supply combinations and multiple DC output units are communicated by CAN bus;The power distribution combination and multiple power supply combinations are connected by AC bus;The output of multiple power supply combinations is connected by DC bus;Each power supply combination is connected with a DC output unit;The power distribution combination is used to convert the input power supply of power supply into 220V AC power supply, and is supplied to power supply combination by AC bus;Wherein, the power supply includes: mains, generator and backup power supply;The power supply combination is used to convert AC into 26V-29V DC to DC output unit power supply;The DC output unit uses bidirectional Buck-Boost power module to realize 1 DC input to multiple DC output, and is supplied to power equipment, the present application effectively saves energy and improves the service life of power supply, so as to realize centralized power supply or distributed power supply use.

The invention provides a control system for distributed power supply access in a power distribution network and a voltage fluctuation suppression method, and belongs to the technical field of power system automation. Comprising a distributed power supply control module, the distributed power supply control module comprises two types of distributed power supplies, and each distributed power supply is provided with an independent local control box; a current sensor, a voltage sensor and a single-chip microcomputer are arranged in the local control box. The system has the beneficial effects that the reliability of the system is improved by adopting a triple architecture of local control, central collaboration and redundant communication, the local control box integrates overload protection, phase synchronization and local reactive power regulation functions, and independent and stable operation of the distributed power supply can be realized; the LoRa wireless communication redundant link is additionally arranged, when the RD425 bus is interrupted, the communication link can be automatically switched in a short time, and the local control box of the switching device maintains the operation of the current parameter, so that the stable output of the distributed power supply is ensured.

The present invention relates to a distributed power adaptive control method based on a measurement-strategy mapping matrix. Its technical features include: constructing and training a distribution network measurement-strategy mapping matrix generation model, generating a measurement-strategy mapping matrix based on real-time distribution network node voltage measurement data; constructing linearized measurement-strategy mapping constraints based on linear dimensionality-increasing decisions; constructing a distributed power adaptive control model, solving the distributed power adaptive control model, and obtaining the operational control strategy for each distributed power source. The present invention constructs linearized measurement-strategy mapping constraints based on linear dimensionality-increasing decisions, then constructs and solves a distribution network self-distributed power adaptive control model. This method achieves efficient solution of distributed power control strategies in the absence of a distribution network physical parameter model, enables real-time response to distributed power fluctuations, and improves the control accuracy of distributed power operation in complex time-varying scenarios.

The invention discloses a source network load storage state sensing method, system and device considering distributed power supply control characteristics, and a storage medium, and the method comprises the steps: collecting the multi-dimensional measurement data of a power grid containing a distributed power supply, and constructing a line measurement model based on the non-linear relation between the measurement data of different dimensions of the power grid and a system state variable; identifying key influence factors of the control characteristics of the distributed power converter on the system state, and establishing a converter measurement model based on the key influence factors; constructing a system state variable estimation model by combining the converter measurement model and the line measurement model and taking minimization of a system state variable as a target function; the system state variable estimation model is solved, the optimal state variable of the system is obtained, and a system state sensing result reflecting the actual operation condition is obtained. According to the method, the state of the industrial park source network load storage system can be accurately estimated, the sensing capability of the industrial park to the source network load storage system is improved, and more reliable data support is provided for subsequent control and optimization of the industrial park.

The present application belongs to the field of distributed power supply control, and particularly relates to a method and system for automatically participating in primary frequency response control of a grid-connected inverter of network construction type. The method mainly comprises a voltage and current inner loop control link, a power synchronization link and a power synchronization compensation link. The voltage and current inner loop control link comprises an inverter voltage and current measurement link, an inverter voltage and current coordinate transformation link, a current inner loop control link and a voltage inner loop control link. The power synchronization link comprises an instantaneous power calculation link, a grid power synchronization link and a voltage, frequency and phase full signal generation link. The power synchronization compensation link design process comprises compensator type selection, real / complex pole compensator parameter selection, power synchronization compensation link embedding in the power synchronization link and verification. The primary frequency response of the control method is a short-term primary frequency response, and is more suitable for distributed power supply inverters with relatively small capacity to realize the primary frequency response function.

This invention relates to the field of distributed power control and intelligent auxiliary technology, specifically a photovoltaic energy storage equipment power distribution optimization system; it includes modules for state parameter acquisition, potential energy mapping processing, gradient diffusion calculation, and power execution control; the system constructs virtual fluid pressure values ​​characterizing energy flow trends by collecting node operating data; its core is to obtain the pressure of neighboring nodes and calculate the pressure gradient and rate of change parameters, driving a bidirectional converter to allow energy to flow autonomously to low-pressure nodes until equilibrium is reached; this invention realizes the transformation from global optimization calculation to distributed decision-making based on local pressure differences, the computational complexity of a single node does not increase with the network size, solves the problems of computational deadlock and response lag when large-scale energy access is implemented, and significantly improves scheduling efficiency.

The application discloses an alternating current micro-grid protection method and system based on reference point voltage waveform comparison, comprising the following steps: setting a first reference point, a second reference point and a third reference point at at least A1, A2 and A3 positions of a protected line respectively; establishing a two-port network model of the protected line and port electrical quantity, taking one port as a measurement point, calculating the voltage of each reference point at the other port based on the voltage of the measurement point; calculating the cosine similarity of the voltage waveform of the measurement point and the voltage waveform of each reference point, taking the value of the cosine similarity corresponding to each reference point as the action criterion of each level of protection, and realizing the multi-level sectional protection of the alternating current micro-grid protected line and determining the fault position simultaneously. The application can expand the protection range, is not affected by the branch load or the branch of the distributed power supply, is not affected by the control strategy of the distributed power supply, and can be applied to both grid-connected and island operation modes simultaneously.

The invention relates to the technical field of energy optimization scheduling, in particular to a micro-grid reactive power optimization distribution method based on deep reinforcement learning control. The method comprises the following steps: establishing a communication link between adjacent distributed power supplies, and selecting a main containment distributed power supply; constructing a micro-grid economic optimization model, and formulating an objective function and constraint conditions of the optimization model by taking economic optimization as an objective; by adopting traction control, the marginal cost of the distributed power supplies is consistent, and the optimal control of the economic cost of each distributed power supply in the micro-grid is realized; taking the maximum deviation value of the marginal cost coefficient as an observed quantity, and obtaining a target marginal cost coefficient based on deep reinforcement learning control; and calculating a reactive power correction output target value of each distributed power supply, controlling the reactive power output value of each distributed power supply to be consistent with the correction output target value, and correcting each distributed voltage. The reactive power distribution precision is improved.

The invention belongs to the field of power distribution network fault recovery, and provides a power distribution network fault recovery method and system considering fault evolution in extreme weather. According to the technical scheme, the active power distribution network fault recovery strategy considering fault evolution in the extreme ice and snow weather is provided for solving the problems that a power distribution network equipment fault evolution mechanism is not accurately described in the extreme ice and snow weather and an existing power distribution network fault recovery method cannot effectively represent a distributed power supply control mode. The method comprises the steps that firstly, the influence of the power distribution network equipment mechanical fault process and power distribution network power flow uncertainty in extreme ice and snow weather is clarified, the equipment fault probability and the system state transition probability are quantified, and a power distribution network cascading fault evolution model based on improved random power flow is deduced; secondly, based on a region division thought of localizing by points, comprehensively considering the affiliation relationship among a master control node, a slave control node and a load node in an island region, and combining master-slave control logic of an island to deduce constraints among the master control node, the slave control node and the load node; constructing a power distribution network fault recovery model considering reconstruction and island division cooperation; and the recovery capability of the power distribution network is improved while the characteristics of flexibility and variability of the power distribution network topology are exerted.