138 results about "Power setting" patented technology

The invention discloses an aggregation regulation and control method and system for multiple virtual power plants, and relates to the technical field of intelligent power grid regulation and control, and the method comprises the steps: enabling a trust anchor to synchronize a link health abstract and preset a safe operation envelope and an autonomous rule when the communication is normal; after link disconnection is detected, an autonomous mode is immediately switched to generate power setting; during the autonomous period, recording power deviation and events and generating a hash track; after the link is recovered, two-way identity verification is completed through quantum key handshake, then a fingerprint set and sparse differences are uploaded, and latest global constraints are received; an aggregation composer reconstructs a system model based on a constraint relaxation matrix and a compensation weight vector, generates an optimized power instruction, smoothly replaces an autonomous instruction with a slip coefficient, recursively allocates spare capacity, and finally realizes the transition from autonomous smooth transition to unified scheduling of each virtual power plant; the method gives consideration to toughness, integrity, fairness and safety, and significantly and integrally improves the distributed energy regulation and control reliability and recovery efficiency.

The invention discloses a doubly-fed wind power grid-connected system low-frequency oscillation control method and device, a storage medium and an electronic device, and the method comprises the steps: calculating a reactive power given value of additional damping control based on an angular velocity difference and an additional damping controller transfer function under the condition that the doubly-fed wind power grid-connected system generates low-frequency oscillation, wherein the reactive power given value is used for providing additional damping for the low-frequency oscillation frequency to suppress the low-frequency oscillation frequency; superposing the reactive power given value to an existing reactive power reference value to obtain a target reactive power reference value; and inputting the target reactive power reference value and the actual reactive power value into a proportional-integral controller of the doubly-fed wind power grid-connected system to obtain a current control instruction output by the proportional-integral controller, and adjusting the low-frequency oscillation frequency according to the current control instruction. By adopting the technical scheme, the technical problem that the suppression effect on the low-frequency oscillation of the doubly-fed wind power grid-connected system is relatively poor is solved.

The invention discloses a grid construction type new energy fault ride-through method and system for realizing amplitude-phase stability, and the method comprises the steps: obtaining a power grid voltage amplitude and a deviation phase angle relative to the steady-state power grid voltage based on the power grid voltage after the fault when a power grid breaks down; performing power setting based on a power angle of the system in a steady state, the power grid voltage amplitude and the deviation phase angle to obtain an active power reference value and a reactive power reference value; and performing network construction type control based on the active power reference value and the reactive power reference value to realize fault ride-through. According to the fault ride-through method, the fault ride-through of the network construction type new energy can be realized only by adjusting the power reference value of the control link, only the control link needs to be added at the network construction type control front end, the change of the original network construction control link is reduced, the realization difficulty is low, and the fault ride-through strategy does not need to add a current loop in the network construction type control link, so that the fault ride-through efficiency is improved. Compared with the traditional fault ride-through control based on current, the control response speed and stability of the network construction type new energy are improved.

The invention discloses a multi-energy complementary coordination control system and coordination control method based on mixed water and light storage. The system comprises a data acquisition unit, a data storage unit, a coordination control unit, an optimization scheduling unit and a telecontrol communication unit. The data acquisition unit is in data connection with the hydropower station, the photovoltaic power station and the energy storage system; the coordination control unit is in communication connection with the data storage unit; the optimal scheduling unit is in communication connection with the coordination control unit; and the telecontrol communication unit is used for issuing the active power setting instruction generated by the coordination control unit and the optimization scheduling unit to the hybrid hydropower station, the photovoltaic power station and the battery energy storage system. According to the method, active power control with real-time performance, coordination and robustness is realized, the consumption capability of new energy is improved, and the impact of new energy access on power grid operation is relieved.

Disclosed are a server system and a power management method thereof. The power management method includes: in a backup mode, making a first power supply that is a master power supply to receive a power setting value and limiting a first output power value of the master power supply to be no greater than a power setting value; and in the backup mode, making a second power supply that is a slave power supply to be activated, and controlling an output power of the slave power supply to be a second output power value, wherein the second output power value is set according to a difference between a total load of the power supply device and the first output power value.

A controller for a resonant converter. The controller is configured to: receive a measured current signal that represents current flowing in the resonant tank; receive a measured voltage signal that represents the voltage at a predetermined point in the resonant tank; receive a power setting signal, which defines a requested power level for the load; set a protected power signal based on a time delay between a change in state of one of first and second switches and a subsequent zero-crossing of the measured current signal; set an upper voltage threshold value and a lower threshold value based on the lower of: i) the protected power signal; and ii) the power setting signal; in response to the measured voltage signal exceeding the upper voltage threshold value, open the first switch and close the second switch; and in response to the measured voltage signal dropping below the lower voltage threshold value, open the second switch and close the first switch.

The embodiment of the invention provides a power information configuration and acquisition method and device, and the method comprises the steps: transmitting the power information and / or path loss information of one or more frequency domain units to a second node, and can solve a problem that a receiver needs an extra time-frequency resource to adjust the power setting. By directly notifying the second node of the power information and / or the path loss information, it is ensured that data of one or more carriers can be correctly received without consuming extra time-frequency resources for power setting.

The invention provides a power flow convergence method and system based on direct current power flow preprocessing and staged decoupling, and belongs to the field of power system analysis and control. Comprising the following steps: performing multi-stage verification and parameter adjustment on original power flow data, executing active balance preliminary verification of a power system, and generating a node active power set initial value set; setting an initial value set based on the active power of the nodes to carry out direct-current power flow calculation, obtaining an initial phase angle of each node, identifying a heavy-load line with a power angle difference exceeding a preset threshold value, and carrying out adjustment to obtain initial phase angle distribution; in combination with a preset initial voltage amplitude and the initial phase angle distribution, performing staging decoupling load flow calculation and adjustment to obtain load flow parameters; and taking the power flow parameter as an initial value, and carrying out full-coupling power flow calculation to obtain a final power flow solution meeting the convergence precision requirement. According to the method, the physical root of the convergence problem can be intelligently diagnosed and positioned, and the convergence and robustness of load flow calculation under complex working conditions are effectively improved through small-range targeted adjustment.

The invention relates to a unified distributed dynamic optimization control method and device for a micro-grid in an autonomous station area, and the method comprises the steps: embedding a frequency regulator at a virtual synchronous converter, estimating the average frequency of the autonomous micro-grid through the frequency regulator, comparing the average frequency with a rated frequency to generate an error term, and calculating the optimal value of the error term; inputting the error term into an integrator to obtain a first power correction term; embedding a benefit optimizer at the virtual synchronous converter, generating a neighborhood error through the benefit optimizer, and inputting the neighborhood error into an integrator to obtain a second power correction term; and adding the first power correction item and the second power correction item with a reference power item to obtain a power setting item, and taking the power setting item as the input of the virtual synchronous converter. According to the invention, stable voltage and frequency support can be provided, and global optimal control is realized.

A controller for a resonant converter. The controller is configured to: compare a measured current signal with a positive current threshold; compare the measured current signal with a negative current threshold; and set a power reduction mode as active if either or both: the measured current signal is less than the positive current threshold at the end of the preceding high-side switch half cycle; and the measured current signal is greater than the negative current threshold at the end of the preceding low-side switch half cycle. While the power reduction mode is active: the controller gradually decreases the value of a reduced power signal. While the power reduction mode is inactive: the controller gradually increases the value of the reduced power signal. the controller sets an upper voltage threshold value and a lower voltage threshold value based on the lower of: i) the reduced power signal; and ii) a power setting signal.

The invention provides an extra-high voltage hybrid direct current transmission fault recovery optimization control method, device and equipment, and relates to the technical field of extra-high voltage hybrid direct current transmission. The system comprises a plurality of sending end converter stations and a plurality of receiving end converter stations, and the plurality of receiving end converter stations are connected to different alternating current systems in a layered manner; the method comprises the following steps: when a receiving end has a fault, obtaining a sub-module capacitor voltage of a target receiving end converter station; based on the sub-module capacitor voltage and a preset sub-module capacitor rated voltage, calculating a power unbalance amount of the target receiving end converter station; and determining an active power setting value of the target receiving-end converter station based on the direct-current side input power and the power unbalance amount of the target receiving-end converter station, and controlling the target receiving-end converter station based on the active power setting value. According to the method, the fault degree can be prevented from being further deepened, so that the fault recovery speed of the hierarchical access system is accelerated.

A controller for a resonant converter. The controller is configured to: receive a measured current signal that represents current flowing in the resonant tank; receive a measured voltage signal that represents the voltage at a predetermined point in the resonant tank; receive a power setting signal, which defines a requested power level for the load; set a protected power signal based on a time delay between a change in state of one of first and second switches and a subsequent zero-crossing of the measured current signal; set an upper voltage threshold value and a lower threshold value based on the lower of: i) the protected power signal; and ii) the power setting signal; in response to the measured voltage signal exceeding the upper voltage threshold value, open the first switch and close the second switch; and in response to the measured voltage signal dropping below the lower voltage threshold value, open the second switch and close the first switch.

A continuity detector for determining the continuity of a Unit Under Test (UUT). The detector comprises a housing defining an interior volume, an electronics package disposed within the interior volume defined by the housing assembly, a first test contact and a second test contact to interface with the electrical wire or harness assembly, a precision resistance standard disposed within the housing and electrically coupled to the electronics package, and a power source disposed within the housing assembly. The first test contact and the second test contact are external to the interior volume. The first test contact and the second test contact are electrically coupled to the electronics package. The electronics package comprising a resistance measurement device and a comparator circuit. The comparator circuit is configured to determine if the resistance of the UUT is greater than, less than, or equal to the resistance of the resistance standard.

Methods and systems are disclosed for reducing power consumption of refrigerated display cases with electronic door displays. A door system for a refrigerated display case includes: a movable door configured to provide access to the refrigerated display case; an electronic display mounted to the movable door; a sensor; at least one processor in electronic communication with the sensor and the electronic display; and a data store coupled to the at least one processor having instructions stored thereon which, when executed by the at least one processor, causes the at least one processor to perform operations comprising: receiving, from the sensor, data indicating a position of the movable door; and in response to receiving the data indicating the position of the movable door, adjusting a power setting of the electronic display.

A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.

1. Name of the product in this design: Graphical User Interface for Lighting Control Operation of Electronic Equipment. 2. Purpose of this design: An electronic device. 3. The key design features of this product are the graphical user interface content on the screen. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Electronic devices are designed in a conventional way, so the rear view, left view, right view, top view, and bottom view of each design are omitted. 6. Design 1 is designated as the basic design. 7. Purpose of Graphical User Interface: Graphical user interfaces are used for the control and operation of lighting equipment. The main view of Design 1 is the main interface for menu settings. Click the "Power and Output" icon in the middle of the main view of Design 1 to enter the interface change state diagram 1; click "Maximum Power Setting" in the interface change state diagram 1 to enter the interface change state diagram 2; click "AC Power" in the interface change state diagram 2 to enter the interface change state diagram 3; click the numerical label on the right side of the interface change state diagram 3 to enter the interface change state diagram 4; click "OK" in the interface change state diagram 4 to complete the settings. The interface interaction from the main view of Design 2 to the interface change state diagram 2 is the same as the interface interaction operation from the main view of Design 2 to the interface change state diagram 2; click "Lamp Cable" in the interface change state diagram 2 to enter the interface change state diagram 3 of Design 2; click the numerical label on the right side of the interface change state diagram 3 to enter the interface change state diagram 4 of Design 2; click "OK" in the interface change state diagram 4 of Design 2 to complete the settings.

The invention relates to the technical field of energy storage converter testing, and aims to solve the problems that a traditional test needs to be disassembled and is low in efficiency. The method comprises the following steps: directly connecting a communication cable with a configuration screen through an exposed RS-485 (Recommend Standard 485), a CAN (Controller Area Network) bus or an Ethernet interface of the energy storage converter, and establishing a non-intrusive closed-loop communication link; the configuration screen issues control instructions such as start and stop, power setting, operation modes and the like, synchronously collects alternating current and direct current side electrical parameters, temperature and fault information of the energy storage converter, and automatically judges a test result after visual display and data processing. According to the method, disassembly or additional hardware is not needed, operation is convenient, multiple communication protocols are compatible, manual testing, automatic multi-working-condition testing and fault diagnosis can be achieved, the method is suitable for production delivery, operation and maintenance inspection and other scenes, the testing efficiency and consistency are greatly improved, and the testing safety and accuracy are guaranteed.

The present invention provides a method and system for controlling the opening of a turbine governor. The method comprises the following steps: obtaining water head data, a frequency signal, and an initial PID control signal of the turbine; generating a difference correction coefficient by combining the water head data and a preset power setting; correcting the initial difference coefficient preset in the turbine using the difference correction coefficient to obtain an adjustment difference coefficient; generating an adjustment PID control signal by combining the frequency signal, the initial PID control signal, and the adjustment difference coefficient; generating an opening control signal by combining the water head data, the power setting, and a preset opening setting; and superimposing the adjustment PID control signal with the opening control signal to generate a control signal for the turbine. The present invention eliminates the need to set a dead zone for power or opening regulation and solves the problem that a single frequency regulation may not operate or operate incorrectly under small frequency differences.

A power manager of an apparatus exposes an application programming interface (API) usable to specify priority and quality-of-service (QoS) parameters (e.g., latency, throughput) for a workload. An application, for instance, specifies the priority and QoS parameters for a workload to be processed using a hardware compute unit. The priority and QoS parameters are employed by the power manager as a basis to configure the power setting of a hardware compute unit. In particular, resource prioritization is extended to both real-time and best-effort workloads to satisfy specified QoS parameters for inference workloads.

The present invention discloses a method and system for collaborative optimization of intelligent master control and frequency regulation of power systems, which relates to the technical field of automated control of power systems. The method comprises the following steps: constructing a deviation function based on the real-time collected grid frequency; determining the primary frequency regulation response power based on the frequency deviation and the unit regulation parameters; dynamically superimposing the primary frequency regulation response power with the power setting value of the automatic power generation control to form a comprehensive power instruction; and dynamically adjusting the weight ratio of the primary frequency regulation and the automatic power generation control. By collaboratively optimizing the regulation actions of the primary frequency regulation and the automatic power generation control, the present invention can provide a faster response when the frequency fluctuation is large, and optimize the unit power regulation when the frequency fluctuation is small, thereby avoiding the conflict and inefficiency caused by the inconsistent regulation time scales of the two in the traditional method. This not only improves the frequency regulation accuracy of the system, but also enhances the dynamic response capability of the system.

Methods and systems are disclosed for reducing power consumption of refrigerated display cases with electronic door displays. A door system for a refrigerated display case includes: a movable door configured to provide access to the refrigerated display case; an electronic display mounted to the movable door; a sensor; at least one processor in electronic communication with the sensor and the electronic display; and a data store coupled to the at least one processor having instructions stored thereon which, when executed by the at least one processor, causes the at least one processor to perform operations comprising: receiving, from the sensor, data indicating a position of the movable door; and in response to receiving the data indicating the position of the movable door, adjusting a power setting of the electronic display.

An apparatus, system, and method are disclosed for automatically controlling a power setting of a power supply unit (PSU). The apparatus includes a processor and non-volatile memory having a switch configured to instruct the PSU to operate in a first overcurrent protection (OCP) mode.

The invention relates to an automatic control method for a network-related test of an energy storage system, and the method comprises the steps: analyzing a structured configuration file, storing a test identifier, total instruction delay time, and power setting values and duration parameters contained in each power setting stage into a predefined data structure, and after a test starting instruction is received, starting the test starting stage according to the test starting instruction. Performing initial delay according to the total instruction delay time, entering a power setting cycle, sequentially reading a power set value and a duration parameter corresponding to a current power setting stage from a predefined data structure, and sending the read power set value to a control system of the energy storage system, s4, the power setting stage is executed, delay waiting is carried out according to a duration parameter corresponding to the power setting value, whether all power setting stages in the predefined data structure are executed or not is judged, if not, the step S4 is executed, the next power setting stage is read and executed, and if yes, the test process is ended.

Methods and systems are disclosed for reducing power consumption of refrigerated display cases with electronic door displays. A door system for a refrigerated display case includes: a movable door configured to provide access to the refrigerated display case; an electronic display mounted to the movable door; a sensor; at least one processor in electronic communication with the sensor and the electronic display; and a data store coupled to the at least one processor having instructions stored thereon which, when executed by the at least one processor, causes the at least one processor to perform operations comprising: receiving, from the sensor, data indicating a position of the movable door; and in response to receiving the data indicating the position of the movable door, adjusting a power setting of the electronic display.

The application discloses a multi-source low-temperature waste heat self-adaptive grid-connection optimization method based on electric-thermal cooperative scheduling, relates to the technical field of energy management, and comprises the following steps: according to a dynamic weight coefficient, a node marginal electricity price and a real-time power generation instruction, an economic objective function and a carbon emission objective function are established, multi-objective cooperative optimization is carried out, and a power setting value of a power generation device is generated; power generation operation is carried out based on the power setting value of the power generation device, hierarchical control instructions of a heat pump and a heat exchanger are generated, equipment operation state parameters are collected to construct a digital twin, and an actual heating load value is generated through a compensation algorithm; and the deviation between the actual heating load value and a heat network load prediction curve is used to update global federated learning model parameters.The application realizes high-dimensional space-time modeling of a nonlinear coupling relationship between economy and a carbon emission target, and breaks through the technical limitation that it is difficult to respond to real-time fluctuations of an electricity price and a carbon price.

The present invention provides a control device (10) for a secondary battery (110) that can limit the power value of the secondary battery (110) per unit time without excessively limiting the allowable power value of the secondary battery (110). The control device (10) for the secondary battery (110) includes an allowable power setting unit (421) and an allowable power limiting unit (422). The allowable power setting unit (421) sets an allowable power value for the secondary battery (110) during at least one of discharging and charging, based on specified information of the secondary battery (110). The allowable power limiting unit (422) limits the power value before the power value of the secondary battery (110) reaches the allowable power value. The allowable power limiting unit (422) limits the power value in stages at two or more different ratios.

A controller for a resonant converter. The controller is configured to: compare a measured current signal with a positive current threshold; compare the measured current signal with a negative current threshold; and set a power reduction mode as active if either or both: the measured current signal is less than the positive current threshold at the end of the preceding high-side switch half cycle; and the measured current signal is greater than the negative current threshold at the end of the preceding low-side switch half cycle. While the power reduction mode is active: the controller gradually decreases the value of a reduced power signal. While the power reduction mode is inactive: the controller gradually increases the value of the reduced power signal. the controller sets an upper voltage threshold value and a lower voltage threshold value based on the lower of: i) the reduced power signal; and ii) a power setting signal.

The invention provides a server system and a power management method thereof. The power management method comprises the following steps: in a backup mode, enabling a first power supply of a main power supply to receive a power set value, and limiting a first output power value of the main power supply to be not greater than the power set value; and in the standby mode, starting a second power supply which is the slave power supply, and controlling the output power of the slave power supply to be a second output power value, the second output power value being set through the difference between the total load of the power supply device and the first output power value.

The utility model provides a PFC starting circuit and a switching power supply. The PFC starting circuit comprises a power setting circuit and a switching circuit. The input end of the power setting circuit is connected with a control circuit of the switching power supply; the input end of the switching circuit is connected with the output end of the power setting circuit, and the output end of the switching circuit is connected with the PFC circuit of the switching power supply; and the power setting circuit controls the switching circuit to be switched on according to a control signal of the control circuit so as to start the PFC circuit. According to the utility model, the PFC circuit can be prevented from being synchronously conducted while the circuit is controlled to be conducted, and the standby power consumption of the switching power supply is reduced.