1537results about "Power network operation systems integration" patented technology

The invention relates to a power supply switching control optimization method and system, and the method comprises the steps: constructing a multi-dimensional data fusion monitoring system, integrating a real-time voltage ripple coefficient detection module of a main power supply, a load transient response analysis module and an environment temperature and humidity sensor array, and generating a dynamic health degree index; the method comprises the following steps: establishing a fault prediction model based on transfer learning, pre-training through multi-scene failure data in a historical database, receiving a health degree index in real time, outputting a reliability attenuation curve, and activating a dual verification mechanism when the slope of the attenuation curve exceeds a preset threshold; extracting characteristic energy distribution of a frequency band of 0.1-10 kHz; executing a transient load impact test, and measuring dynamic response parameters of voltage recovery time and overshoot amplitude; and generating a switching confidence score based on cross processing of the dual verification result and the attenuation curve, and triggering a hierarchical switching instruction. The accuracy of the switching time of the main power supply and the standby power supply can be improved.

The invention provides a shelter rapid power supply recovery method and system suitable for an emergency rescue task. The method comprises the following steps: collecting a power interruption signal, analyzing the power interruption signal, and generating an emergency response instruction; fault points are automatically identified and accurately positioned, the importance level of each electric device in the shelter is evaluated, and a dynamic priority list and a device demand report are generated; intelligently selecting a stand-by power supply combination scheme, starting a stand-by power supply switching process, and generating a stand-by power supply activation instruction; after a standby power supply activation instruction is received, the power supply sequence and power distribution of all devices are dynamically adjusted, normal operation of key facilities is preferentially guaranteed, and a device power supply plan is generated; and continuously monitoring the working state of the standby power supply and the influence of the standby power supply on the overall power system of the cabin, dynamically optimizing the power supply strategy, and generating an optimized power supply scheme. According to the technical scheme provided by the invention, the response speed and the power supply reliability of the shelter hospital or the temporary emergency facility during power interruption are improved.

The present invention belongs to the field of smart power grids and power system automation control. Disclosed is a load emergency control method based on a dynamic event triggering mechanism, which method comprises: on the basis of an indicator of safe operation of a system, performing region division on a distribution network; proposing an adaptive load level division method based on user response willingness, and by taking the minimization of the system operation cost of the distribution network as an objective, establishing a precise load control model of the distribution network; and using a dynamic event triggering mechanism to reduce communication between substations and a master station of the distribution network, so as to realize effective exchange and precise execution of load control policy information. The method of the present invention can precisely realize precise control of a load, and can effectively alleviate communication transmission pressure of a distribution network, thereby ensuring the stability of a power grid and the continuous supply of critical loads.

The invention relates to the technical field of power distribution, in particular to a power distribution control method, device and equipment and a computer storage medium. Judging whether the operation parameters are abnormal or not based on the operation parameters; if the operation parameters are abnormal, a switching signal is output to the UPS module so as to control to be switched to a standby power supply module for power supply; and outputting a running stopping signal to the main power supply module. The power supply switching efficiency can be improved, and the power failure of the electric equipment can be avoided.

The invention relates to a flywheel energy storage UPS system and method using a split transformer, and the system comprises a standby generator set which is disposed at a power supply end and is connected in parallel with a commercial power supply end, and when the commercial power is abnormal, the standby generator set can serve as a power supply to supply power to a load; one end of the switch control assembly is connected with the commercial power and the standby generator set, the other end of the switch control assembly is connected with a load, and the commercial power, the standby generator set and the load can be connected or disconnected; the output end of the flywheel energy storage device is connected to a power supply line between the switch control assembly and the load and can serve as a power source to supply power to the load. The number of the flywheel energy storage devices is more than two, and the more than two flywheel energy storage devices are connected to a power supply line through the split transformer. Compared with a traditional on-line low-voltage UPS system, the on-line low-voltage UPS system has the advantages that by using the backup flywheel energy storage device and the split transformer, the operation efficiency is as high as 99%, and the system loss is greatly reduced.

A system including an electrical meter and at least one server. The electrical meter: obtains a power monitoring signal by measuring an electrical property of a power line to a building; processes the power monitoring signal in a first mode of operation to determine first information about a first device in the building; transmits the first information to the at least one server; receives from the at least one server, an instruction to change to a second mode of operation; processes the power monitoring signal in the second mode of operation to determine second information about a second device in the building; and transmits the second information to the at least one server. The at least one server: receives the first information from the electrical meter, transmits the instruction to the electrical meter to change to the second mode of operation, and receives the second information.

The invention discloses a low-frequency load shedding method and system based on zero crossing point real-time frequency tracking, and the method specifically comprises the steps: setting a dynamic time window according to the power frequency characteristics of a sensing signal, and removing an abnormal zero crossing point exceeding the dynamic time window; matching a pre-stored harmonic feature library, establishing a mapping relation between a harmonic mode and a phase offset, and performing adaptive phase compensation on a pseudo zero crossing point of the sensing signal; a sensing signal, PMU phasor data and meteorological parameters are input into a three-dimensional convolutional neural network, a cross-modal incidence matrix is calculated through a self-attention mechanism, a future frequency change trajectory is predicted in combination with an LSTM unit, and an optimal load shedding strategy is output; and based on the optimal load shedding strategy, in combination with a forward acceleration criterion and reverse fault locking, executing emergency load shedding according to load importance grading. The technical bottleneck of a traditional low-frequency load shedding device is effectively solved, and the performance and reliability of frequency stability control of the power system are remarkably improved.

The invention belongs to the technical field of on-satellite intelligent information processing power supply and distribution, and discloses a power supply and distribution system of an on-satellite real-time information processing system. The system is composed of a short circuit protection circuit (10), a surge suppression circuit (20), a satellite real-time processing system switching circuit (30) based on a magnetic latching relay, an EMI filter (40), a DC-DC power supply module (50), a relay-based power supply and distribution switching circuit (60), a DC-DC power supply module (70) and a DC-DC power supply module (80). According to the invention, the power supply problem of any dynamic redundancy unit in the satellite real-time information processing system is solved, and the sneak path problem caused by misoperation in the use process is avoided.

The invention provides a communication master control system based on intelligent power supply, and relates to the technical field of communication, and the system comprises a power supply monitoring module which is used for monitoring the commercial power supply state of a communication base station, and automatically controlling a power switching circuit to switch a power supply mode to a standby battery power supply mode when the commercial power interruption is detected; the state acquisition module is used for acquiring the charge state, the discharge efficiency and the health state data of the standby battery in real time in a standby battery power supply mode, and acquiring the residual capacity, the actual discharge capacity and the life index of the battery; and the load receiving module is used for uploading the residual capacity, the actual discharge capacity and the life index of the battery to the communication main control unit, and receiving load data in the current communication network at the same time. According to the invention, intelligent scheduling of power utilization is realized, and the power supply reliability and stability of the communication system are improved.

A method of power management of a hybrid power plant includes at least one type of renewable power generation equipment and an energy storage system, including: before a first dispatching time range: using first forecasts of energy production capability and energy price, and in particular hybrid plant status and plant parameters, to derive a first power generation schedule defining power generation in the first dispatching time range; at a dispatch point in time within the first dispatching time range: using second forecasts of energy production capability and energy price, and in particular plant status and plant parameters, to derive a second power generation schedule defining power generation in a second dispatching time range; and calculating an optimal power injection value for the dispatch point in time based on the first power generation schedule and the second power generation schedule taking into account at least one constraint.

The invention discloses an intelligent UPS power supply control system, and relates to the technical field of UPS power supplies, and the system comprises a first detection module, and when the first detection module detects that the electric energy provided by a power supply control module is lower than a first low-voltage threshold value and is greater than a second low-voltage threshold value, the UPS power supply is started; the first battery module or the second battery module and the power supply control module are controlled by the energy-saving control module to carry out electric energy superposition power supply, so that the electric energy consumption of the first battery module and the second battery module is reduced, and the electric energy of the power supply control module is reasonably utilized; the charging and discharging control module automatically controls the first battery module or the second battery module to carry out balanced discharging and controls the first battery module and the second battery module to carry out series discharging, and the charging and discharging control module can carry out balanced charging control. According to the intelligent UPS control system, the cruising ability of the power supply can be increased, the power supply efficiency of the power supply is improved, the charging and discharging safety is improved, and the service life is prolonged.

An power system for a power system. The power system includes multiple electrical power sources and an enclosure operatively connected to the power sources at multiple input terminals. Multiple loads operatively connect to the enclosure at multiple output terminals by multiple cables. The enclosure includes the input terminals and the output terminals and a controller unit. Multiple selection units operatively connect to the controller unit, multiple power converters are connected to multiple connection paths. The selection units connect to at least one of multiple switches connected in the connection paths. Multiple sensor units are operatively attached to the controller unit which is configured to sence multiple parameters in the connection paths. Responsive to the parameters sensed by the sensor units, the selection units select the connection paths between the electrical power sources and the loads.

An apparatus may control the power delivered from an AC power source to an electrical load, and may comprise a controllably conductive device. The apparatus may also comprise a controller that may be operatively coupled to a control input of the controllably conductive device. The apparatus may also include a first wireless communication circuit operable to communicate via a first protocol and to join a first wireless communication network operable to communicate via the first protocol. The first wireless communication circuit may be in communication with the controller. The controller may be operative to determine a first condition for communicating via the first protocol. The controller may also be operable to control the first wireless communication circuit to join the first wireless communication network upon the first condition being satisfied.

The invention provides an intelligent power supply management device which comprises a power supply monitoring module used for monitoring the state of a mains supply input power supply, a battery module used for providing standby power supply capacity, and a power supply conversion module used for providing power supply conversion capacity. The switch module is used for switching power supply modes; the control module is electrically connected with the power supply monitoring module, the battery module, the power supply conversion module and the switch module, and is used for monitoring the state of a mains supply input power supply through the power supply monitoring module; and predicting and evaluating the occurrence probability of the abnormal condition of the commercial power input power supply state, and controlling the battery module, the power supply conversion module and the switch module to switch among a commercial power supply mode, a battery inversion power supply mode and a hybrid power supply mode according to an evaluation result. Stability of an input end power supply of the electronic equipment can be effectively guaranteed.

The present invention discloses an auxiliary power supply multi-channel power supply active selection circuit, including the following circuit modules: AC rectifier power supply circuit; battery rectifier power supply circuit; bus power supply circuit; RTC buffer circuit: using thermistor as a buffer circuit for power supply voltage; supporting capacitor circuit: electrolytic capacitor as a support for the input voltage of the auxiliary power supply system, ensuring the stability of the auxiliary system power supply voltage during the DC power supply circuit switch switching process; DC power supply circuit switch and switch control circuit. The present invention improves on the original passive auxiliary power supply multi-channel power supply circuit, adds an active switching circuit, and when the AC voltage is established and reaches a constant amplitude, cuts off the battery and bus power supply circuit of the auxiliary power supply, and switches to the AC side for power supply alone, avoiding the continuous loss of system battery energy. After the energy storage system is discharged, the standby state will not consume battery power, and the energy storage system can maintain a long standby operation after discharge without entering a power loss state.

An emergency LED lighting system maintains power to an LED lighting source based on measured voltages and currents provided to the LED lighting source; rolls back or decreases power provided to an LED lighting source over time in order to increase the amount of time the battery can power the LED lighting source; executes a soft start procedure, such that the power provided to the LED lighting source is gradually ramped up during activation of the LED lighting sources; identifies a type of battery coupled to the emergency LED lighting system; cycles the emergency LED lighting system between charging mode and standby mode to reduce power consumption over a window of time; detects AC power or an absence of AC power; and / or uses a status LED to communicate information about the emergency LED lighting system with a remote device.

The utility model provides a hardware circuit and an electronic device for preventing a power supply from being restarted repeatedly, which are suitable for a UPS (Uninterrupted Power Supply) comprising a main power supply and a standby power supply, and the hardware circuit comprises a voltage comparator, a voltage-regulator tube, a first MOS (Metal Oxide Semiconductor) tube, a first triode, a switch element and a first capacitor, the output end of the main power supply is connected with the positive input end of the voltage comparator; the output end of the standby power supply is connected with the first end of the switch element; the second end of the switch element is connected with the first end of the first capacitor, the first end of the voltage-regulator tube and the drain electrode of the first MOS tube; the second end of the first capacitor is connected with the positive input end of the voltage comparator; the second end of the voltage-regulator tube is connected with the negative input end of the voltage comparator; the grid electrode of the first MOS tube is connected with the collector electrode of the first triode; the base electrode of the first triode is connected with the output end of the voltage comparator. The reliability and the stability of the power supply in the use process can be improved.

A system includes a central analysis station and a display. The central analysis station may be configured to receive a unique identifier and performance data from each of a plurality of solar panels. The central analysis station may detect a problem in at least one of the plurality of solar panels based on the performance data. A display may be configured to display a status of the at least one of the plurality of solar panels based on the detected problem.

The invention relates to an operating mechanism of a dual-power automatic change-over switch, which comprises a shell and an automatic change-over assembly, and is characterized in that the automatic change-over assembly comprises a mechanism frame, a motor, a change-over disc, a change-over shaft, a first rotating frame, a first change-over pull plate, two first energy storage springs, a second rotating frame, a second change-over pull plate, two second energy storage springs and a change-over driving part; a driving part is arranged on the side, facing the first rotating frame, of the conversion driving part in a linkage mode, a shifting shaft matched with the driving part is arranged at one end of the first rotating frame, a shifting groove matched with the shifting shaft is formed in the driving part, and one end of the shifting shaft moves along with the first rotating frame and moves in the shifting groove in a reciprocating mode. And linkage matching between the driving piece and the first rotating frame is formed. The circuit breaker has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion and high breaking capacity.

The present disclosure relates to a standby power supply, including: a first sub power supply configured to provide alternating current electrical energy, where the first sub power supply is connected to an input terminal of an alternating current / direct current (AC / DC) converter; the AC / DC converter configured to convert the alternating current electrical energy into direct current electrical energy, where an output terminal of the AC / DC converter is connected to an output terminal of the standby power supply; and second sub power supplies configured to provide the direct current electrical energy, where the second sub power supplies are connected to the output terminal of the standby power supply. Through the present disclosure, a standby power supply solution having high reliability and capable of meeting power consuming requirements of a load with a great change in power demand such as a wind generator may be provided.

Wireless communications are described. A wireless device may be configured to transmit a first signal via a first cell group that may overlap in time with a second signal via a second cell group. The wireless device may adjust a signal transmission power of at least one of the first signal or the second signal. Additionally or alternatively, the wireless device may drop at least one of the first signal or the second signal. Adjusting and / or dropping at least one of the first signal or the second signal may be based on the overlap in time of these signals satisfying a duration threshold and a total power to transmit the first signal and the second signal exceeding a power threshold.

The super capacitor charging module in the multi-path power supply standby power logic circuit for the novel Internet of Things meter comprises a resistor module, a diode D1 and a capacitor C1, wherein the resistor module, the diode D1 and the capacitor C1 are connected in series and are formed by connecting resistors R1 and R2 in parallel; the input ends of the resistors R1 and R2 which are connected in parallel are connected with + 5.2 V; one end of the capacitor C1 is grounded, and the other end is respectively connected with the diodes D1 and D2; + 5.2 V is respectively connected with the clock battery power supply AVBAT network and the VIN end of the voltage stabilizer U1 through a diode D3, and the output end of the diode D3 is also grounded through a capacitor C6; one path of network battery current ABATT is grounded through a capacitor C2 and a resistor R4 which are connected in parallel, and the other path of network battery current ABATT is connected with a resistor R3; the output end of the resistor R3 is respectively connected with diodes D4 and D6 and a resistor R5; the output end of the diode D4 is connected to the output end of the diode D3; the resistor R5 is connected with a power supply E1, and the power supply E1 is connected with a capacitor C3 in parallel; the output end of the diode D6 is connected with the output end of a diode D5; the structure is compact and use is convenient.

A state change device may be electrically connected to a switched receptacle, or to both the switched and unswitched receptacles, of an outlet. The state change device may generate a change of state signal when power is applied to, or removed from, the switched receptacle. The state change device may wirelessly communicate the signal. The state change device may include a load control circuit that may be configured to control the amount of power delivered to an electrical load that is electrically connected to the state change device. The state change device may receive commands directed to the load control circuit. The state change device may be deployed in a load control system and may operate as a control entity, such that the state change device may issue commands to one or more load control devices, responsive to the application or removal of power at the switched receptacle.

The invention discloses a parallel operation UPS system control method, and relates to the technical field of UPS power supplies, the parallel operation UPS system comprises a common battery pack, an AC / DC converter, a DC / DC converter and a DC / AC converter, in the system, at least two UPSs are connected with each other and are jointly connected to the same battery pack through the DC / DC converter; the parallel operation system can realize two main working modes: a backup mode and a capacity mode. According to the parallel operation UPS system control method, the output voltage, frequency and phase of each UPS module are accurately controlled, high synchronization among the UPS modules is ensured, the output current of each UPS module is accurately controlled, uniform distribution of loads is achieved, redundant communication links, a reliable communication protocol and an error detection mechanism are adopted, and the reliability of the system is improved. Accurate transmission and effective execution of the control instruction can be ensured.

A charging management system includes a network interface, a memory, and a processing circuit including a processor. The processing circuit is configured to determine monetary information related to an energy price, determine an electrical vehicle (EV) power limit PLIM for a total amount of EVs in an EV charging network, transmit the monetary information to two or more agents, each of the two or more agents associated with an EV in the EV charging network, receive, from each of the two or more agents, a bid including: an agent monetary value, a desired charging rate PD, and a charging interval, and allow the EVs associated with the two or more agents to be charged based on each of the bids.

The invention relates to the field of load control, in particular to a non-fixed load accurate removal method based on load control fairness and effectiveness consideration. Comprising the following steps: acquiring the frequency of a power grid system, calculating the frequency change rate, judging whether to send a'preparation for load shedding 'instruction to all substations by monitoring the frequency of the power grid system and the frequency change rate, entering a load shedding amount calculation stage, and calculating the load amount needing to be cut off in each region through a dynamic weighted load precise cutting algorithm, calculating a total load shedding amount; based on the load capacity needing to be cut off in each area, the substation optimizes the cut-off combination of the load lines in the areas, after optimization is completed, the substation executes cut-off, and the master station monitors the frequency and the frequency change rate of the power grid system after cut-off and judges whether a locking condition is met or not so as to stop further cut-off. The technical problems that power grid frequency monitoring mostly depends on low-sampling-rate equipment, the rapidly-changing frequency dynamic state is difficult to capture, and instability detection lags or misjudgments are caused are solved.

Systems and methods for managing power on an electric power grid including a server for communicating IP-based messages over a network with distributed power consuming devices and / or power supplying devices, the IP-based messages including information including a change in state of the power consuming device(s), a directive for a change in state of the power consuming device(s), a priority message, an alert, a status, an update, a location with respect to the electric power grid, a function, device attributes, and combinations thereof.

The invention relates to the technical field of low-voltage power supply and distribution systems, and discloses a dual-power-supply quick switching circuit for a low-voltage power supply system, which comprises a main power supply, a standby power supply, a circuit breaker QF1, a circuit breaker QF2, a relay KA1, a relay KA2, an alternating current contactor KM1, an alternating current contactor KM2 and a load, the main power supply is connected with the circuit breaker QF1, one path of the QF1 is connected with the KM1, and the KM1 is connected with the load; the other path is connected with the KA1 from the QF1, the KA1 is connected with the KM2, the KM2 is connected with a coil of the KM1 and then connected with the zero line N, and the 1B phase line and the 1C phase line of the main power supply are further connected with the two ends of the coil of the KA1; the standby power supply is connected with the circuit breaker QF2, one path of the QF2 is connected with the KM2, the KM2 is connected with the load, the other path of the QF2 is connected with the KA2 from the QF2, the KA2 is connected with the KM1, the KM1 is connected with a coil of the KM2 and then connected with the null line N, and the 2A phase line and the 2B phase line of the standby power supply are further connected with the two ends of the coil of the KA2. When the main power supply is abnormal, the standby power supply can be quickly switched to avoid shutdown of the lower-level equipment, the standby power supply can be automatically switched after the lower-level short circuit fault is isolated, and the power supply reliability of the low-voltage power supply and distribution system is greatly improved.

The present invention discloses an orderly charging method and system for electric vehicles based on an intelligent fusion terminal in an electric vehicle substation, and belongs to the technical field of electric vehicle charging and discharging. The method of the present invention comprises: obtaining basic information of the charging piles in the substation, determining the daily load forecast results of the charging piles in the substation according to the basic information, and inputting the daily load forecast results and electricity price information into the intelligent fusion terminal in the substation; judging whether the charging piles in the substation can meet the charging demand according to the SOC information of the newly connected electric vehicle battery, the daily load forecast results, the real-time updated load information and the user demand information; determining the charging plan, and charging the newly connected electric vehicle with the newly formulated charging plan. The present invention can effectively improve the real-time and interconnectivity of charging facility data information, improve the compatibility of distribution automation terminals and electric vehicle charging facilities, and make the collected data sufficient to support the participation of electric vehicle charging facilities in interaction.

The invention belongs to the technical field of power system load control, and discloses a power low frequency-to-flexible load control method, system and device and a medium, and the method comprises the following steps: building a power system node frequency model; performing node frequency solution based on the power system node frequency model to obtain node frequency weight matrix information; constructing a load removal model of the new energy power system, and solving the load removal model of the new energy power system to obtain flexible load power expected to be removed by the power system; and each node flexible load on-site device performs on-site power control on the flexible load according to the optimal distribution result. According to the method, starting from the mechanism of the system frequency space-time distribution characteristics, frequency models of a synchronous machine, loads, new energy and the like are established, main indexes influencing the node frequency are explained, and a low-frequency-to-flexible-load strategy for reducing the system frequency deviation and improving the system stability is provided.