1206results about "Power network operation systems integration" patented technology

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.

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 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 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 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.

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 utility model discloses a dual-power switch power distribution system and a control device and an air conditioner thereof, and the device comprises a main power supply and a standby power supply which are connected to a load side circuit breaker after passing through a dual-power switch system; the standby power supply is also connected to the first connecting end of the bypass system; the second connecting end of the bypass system is connected to a circuit breaker of a second-level load and a common end of the second-level load; under the condition that short-circuit faults occur between the main power supply and the load-side circuit breaker and between the standby power supply and the load-side circuit breaker, the dual-power switch system disconnects the main power supply and the standby power supply, and the bypass system controls the standby power supply to supply power to the second-level load through the circuit breaker of the second-level load. According to the scheme, the bypass system is added to the dual-power switch power distribution system, the bypass system is used for supplying power to the second-level load, namely the important load when the short-circuit fault occurs between the dual-power switch and the load circuit breaker, and the reliability of the dual-power switch power distribution system is improved.

The invention discloses an intelligent socket, an intelligent socket system, a control method and a storage medium, and the intelligent socket comprises a plurality of power supply input interfaces, the plurality of power supply input interfaces comprise a commercial power input interface and an energy storage input interface, the commercial power input interface is used for connecting commercial power, and the energy storage input interface is used for connecting a standby power supply; a power supply output interface; the change-over switch can selectively conduct the power supply output interface and any one of the power supply input interfaces; and the controller is configured to control the change-over switch to conduct the power supply output interface and a target power supply input interface, and the target power supply input interface is determined based on working conditions of objects connected with the multiple power supply input interfaces. Through the cooperation of the controller and the change-over switch, the intelligent socket can adaptively adjust the power supply according to the working condition of an object connected with the power supply input interface, and autonomously connect the power supply output interface and the power supply input interface, thereby meeting the demands of different power utilization scenes, and improving the power utilization stability and continuity.

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 relates to the technical field of power electronics, and discloses a wall-mounted power supply and an intelligent monitoring system thereof, and the system comprises a cabinet body which is internally divided into a top AC input region, a middle region and a bottom battery output region; according to the two-way alternating current input circuit, an alternating current input 1 and an alternating current input 2 are respectively connected to a contactor through a circuit breaker to realize switching of a main power supply and a standby power supply through interlocking logic; the rectification and conversion circuit is used for converting AC input into DC48V through a rectification module to charge the lithium iron phosphate battery pack, and outputting the DC 48V to a DC bus through a boost module; an output power distribution circuit, wherein the DC bus is distributed to a plurality of load output circuits through a fuse; and a monitoring unit interface. Seamless switching of two-way alternating current input is achieved through mechanical and electrical interlocking design, zero-delay switching power supply of a main power supply and a standby power supply is ensured, the state of a battery is monitored in real time, a charging and discharging strategy is dynamically optimized, multiple protection mechanisms are integrated, power supply continuity is remarkably improved, the service life of the battery is prolonged, and stable operation requirements under complex working conditions are met.

The utility model relates to the technical field of power supply switching, and discloses a double-path direct current power supply switching device, which comprises a main direct current power supply, a standby direct current power supply, a double-path power supply switching module and a state detection module, the main direct current power supply and the standby direct current power supply are connected in parallel to the double-path power supply switching module, and an output circuit of the double-path power supply switching module is connected with load equipment; the state detection module is electrically connected with the double-circuit power supply switching module, and is used for collecting input current signals of the main DC power supply and the standby DC power supply, controlling the double-circuit power supply switching module to be communicated with at most one circuit of power supply, and transmitting the signals to load equipment. The switching circuit is short in switching time delay, small in size and small in switching voltage fluctuation, and ensures normal operation of load equipment.

A building energy system includes equipment configured to consume, store, or discharge one or more energy resources purchased from a utility supplier. At least one of the energy resources is subject to a demand charge. The system further includes a controller configured to determine an optimal allocation of the energy resources across the equipment over a demand charge period. The controller includes a stochastic optimizer configured to obtain representative loads and rates for the building or campus for each of a plurality of scenarios, generate a first objective function comprising a cost of purchasing the energy resources over a portion of the demand charge period, and perform a first optimization to determine a peak demand target for the optimal allocation of the energy resources. The peak demand target minimizes a risk attribute of the first objective function over the plurality of the scenarios.

The present application discloses a power supply and backup network of a communication device. The network includes a medium-low voltage power distribution system, a high voltage battery backup power system, a power distribution system, and a high-voltage direct-current (HVDC) bus system, where the medium-low voltage power distribution system is connected to the power distribution system by the HVDC bus system; the high-voltage battery backup power system is bypassed on the HVDC bus system; the medium-low voltage power distribution system is configured to provide HVDC power for the power distribution system by the HVDC bus system by using input mains power and oil energy backup power; the high-voltage battery backup power system is configured to provide HVDC backup power for the power distribution system by the HVDC bus system; and the power distribution system is configured to distribute, to a connected electrical device, the HVDC power.

The invention provides an uninterruptible power supply automatic switching device test method and system based on visual control, and the method comprises the steps: connecting a voltage collection end of test equipment to a secondary output terminal of a voltage transformer at a power supply side of an automatic switching device; and meanwhile, a secondary current signal of the current transformer is obtained and input to the test equipment, and a current output end is pre-connected to a protection side current input terminal. In the testing process, actual voltage and current are monitored in real time through a graphical user interface, and the testing equipment is controlled to synchronously output analog voltage and current. The method comprises the following steps: presetting an automatic test sequence and parameters, automatically applying test working conditions to the spare power automatic switching device by test equipment according to the parameters after starting, synchronously acquiring test data, and finally calculating performance indexes based on the test data and generating a test report. According to the method, the spare power automatic switching device can be comprehensively, accurately and safely tested under the condition that power supply is not interrupted.

The present invention discloses a UPS power supply with an automatic switching function, which relates to the field of power supply. The UPS power supply with an automatic switching function comprises: a mains power supply module, which is used to introduce mains alternating current (AC) power and supply it to a step-down rectifier filter module and a load working module; a step-down rectifier filter module, which is used to convert the AC power into DC power and supply it to a switching and storage module; and a switching and storage module, which is used to store electric energy for a battery when DC power is input, and to control the load working module to use the mains AC power as a power supply. When there is no DC power input, the present invention has the following beneficial effects: the present invention determines the current power state of the battery through a power determination module, and feeds it back to a single-chip microcomputer working module, which controls the working condition of the load through a power supply control module, so that the output power of the battery matches the working condition of the load, thereby ensuring the normal working condition of the main power-consuming equipment of the load and extending the normal working time of the main power-consuming equipment.

A method includes determining a probability that load shedding will be needed to achieve a target energy consumption. The method also includes, in response to the probability exceeding a threshold, generating a plurality of scores for a plurality of units of equipment indicating relative advantages of shedding the plurality of units of the equipment and implementing the load shedding by controlling plurality of unit of equipment. Controlling the plurality of units of equipment includes shedding a first unit of the plurality of units. The first unit is associated with an extremum score of the plurality of scores.

The invention belongs to the technical field of power equipment power supply, and relates to a dual-power fast switching redundant system CCV power supply device, which comprises a dual-power module, a fast switching device, a UPS system, a redundant system, an intelligent monitoring module and an operation and maintenance management module according to a functional structure, and all system modules are electrically communicated in an electric information structuring manner to form an integrated power supply technical scheme. Rapid switching, stable operation and a safe and reliable power supply environment are realized; a power supply, a communication network, a control three-dimensional redundant system and an ATS rapid switching device are matched to be differentially matched with an online / backup UPS, zero interruption of load power supply is achieved, the single-point fault risk is effectively resisted, and the high-reliability power supply requirements of precision manufacturing, data centers and the like are met; the system is scientific and comprehensive in design, reliable and flexible in architecture, convenient and efficient in operation and maintenance, wide in application scene and remarkable in advantages of guaranteeing power supply stability and reducing comprehensive cost.

The invention provides a railway emergency power supply cooperative control method and system based on signal linkage, and relates to the field of railway electric braking systems.The method comprises the steps that 1, electrical parameters and power supply state data of station connection cables between adjacent stations are obtained on the basis of optoelectronic isolation signal acquisition units distributed in station machine rooms along a railway, the data are transmitted to the monitoring host in real time through the main-standby dual-path transmission architecture; and step 2, the monitoring host performs dynamic topological relation analysis based on the transmitted data in combination with a preset fault feature library, generates a space structure framework representing a fault influence range, and judges a fault category in combination with a station connection circuit control rule to generate a fault judgment result. Signal linkage and cooperative operation between railway emergency power supplies are achieved, power supply reliability and emergency response speed are improved, and stable operation of a railway system is guaranteed.

The utility model discloses a novel dual-power multi-standby plug-in low-voltage switch cabinet, which comprises a base, a bus coupler cabinet mounted in the middle of the top end of the base, a first wire inlet cabinet mounted on one side of the top end of the base, and a second wire inlet cabinet mounted on the other side of the top end of the base, drawer type circuit breakers are installed in the middle of the bus coupler cabinet, the middle of the first wire inlet cabinet and the middle of the second wire inlet cabinet respectively, a change-over switch is installed on one side of the top of the front face of the bus coupler cabinet, an automatic switching microcomputer is installed on the other side of the top of the front face of the bus coupler cabinet, and two wire outlet drawers are installed at the bottom of the first wire inlet cabinet and the bottom of the second wire inlet cabinet respectively. According to the novel dual-power-supply multi-standby plug-in low-voltage switch cabinet, the two wire inlet cabinets and the bus coupler cabinet of the low-voltage switch cabinet adopt electrical interlocking to ensure that the three wire inlet cabinets and the bus coupler cabinet cannot be switched on at the same time, and a standby power automatic switching microcomputer and a change-over switch are additionally arranged on the contact cabinet to realize three switching functions of standby power automatic switching, manual operation and stopping.

To provide a unit count control device capable of performing demand response while suppressing fluctuation in steam pressure.SOLUTION: A unit count control device controls a plurality of boilers, including one or more electric boilers and one or more fuel boilers. In a case where reduction control is performed to reduce an amount of steam generated by the one or more electric boilers based on power information even if the steam pressure is at a value that does not require a change in a combustion state of the boiler, the unit count control device performs combustion state change control to change the combustion state of at least one of the one or more fuel boilers before the reduction control is started.SELECTED DRAWING: Figure 2

The present inventive concepts comprise a connected, intelligent transfer switch system that permits remote metering, monitoring and control of energy sources connected to a device both by hardwired and wireless connection, and the method for operating this system is disclosed. The inventive concepts represent a significant improvement upon existing transfer switch systems by incorporating advanced monitoring and control capabilities of all energy resources connected to a building, such as fossil-fuel powered generators, battery storage systems, solar photovoltaic arrays, wind turbines, utility grid connections, controllable loads, or other technologies which generate, store or consume energy. The inventive concepts further provide means for flexible and intelligent operation of these resources through a dedicated network communication connection which enables advanced operational decision-making to determine optimal switching actions and real-time interaction through user-facing digital interfaces.

The invention relates to the technical field of power grid control, in particular to a low-frequency load shedding master station control method for a high-proportion new energy power grid. Comprising the steps of collecting frequency data, performing anomaly detection on the frequency data, and introducing a dynamic load shedding decision algorithm based on multi-dimensional influence parameters after an anomaly is found to obtain a preliminary load shedding decision; generating a preliminary load shedding control instruction based on the preliminary load shedding decision; and based on the initial load shedding control instruction, introducing a dynamic feedback adjustment mechanism, and gradually adjusting the initial load shedding decision according to the feedback of the power grid frequency and the load change condition to obtain an optimized load shedding decision. The technical problem that a new energy power grid is low in frequency anomaly control efficiency and poor in accuracy is solved.

The invention provides an anti-countercurrent control method and system based on load removal feature recognition, and the method comprises the steps: setting an anti-countercurrent power judgment threshold value and a feature signal capturing judgment threshold value, recording an event triggering moment, a power reduction starting moment and initial power when the power of a user home-entry gateway is lower than the feature signal capturing judgment threshold value, and recording the initial power of the user home-entry gateway; collecting voltage and current waveforms within a preset time span before and after a power reduction starting moment to form a load removal characteristic waveform, calculating a time difference value and a power difference value, and storing related data in a characteristic library; scanning the voltage and current waveforms of the home-entry gateway in real time, calculating the correlation between the real-time waveform and the waveforms in the feature library through a Pearson's correlation coefficient method, updating the credibility value and the application timestamp of the matched feature waveform when the correlation coefficient exceeds a threshold value, and updating the application timestamp when the credibility value reaches a set threshold value. And generating an energy storage system power suppression instruction based on the power difference value and the time difference value. According to the invention, economic loss and power supply enterprise fines caused by reverse power transmission can be reduced.