366 results about "Electrical grid" patented technology

The present application discloses a calculation method for multi-scale electric-carbon energy efficiency optimization for a power system, which includes designing a carbon flow calculation improvement model of the power system that takes into account a photovoltaic cluster auxiliary service, converting a power lossy transmission network of the power system equivalent to a lossless power consumption network, and calculating a carbon flow of the power system that takes into account a photovoltaic reactive power cluster auxiliary service; designing a decision-making system for low-carbon operation of the power system based on a coupling of electric-carbon energy efficiency, and calculating a correlation between electric quantity and the carbon flow of the power system that takes into account the photovoltaic cluster auxiliary service; the output varies in the range of 0-1, larger values represent a stronger correlation between electric-carbon energy efficiency.

The invention relates to the technical field of cable fault diagnosis and positioning, in particular to a cable fault positioning method and system based on multi-source data space-time correlation, and the method comprises the steps: obtaining partial discharge, traveling wave and temperature multi-source monitoring data from a high-voltage cable-overhead line hybrid power transmission network; on the basis of space-time correlation analysis of partial discharge and temperature data, heat-electricity associated defect points are calibrated; comparing traveling waves of the cable and the overhead line, and identifying and inhibiting cross-domain propagation interference; positioning the traveling wave data which are not identified to obtain temporary coordinates, judging fault characteristics by fusing information such as sheath ring current and the like, and comparing the temporary coordinates with defect points to generate matching identification; and inputting multi-dimensional information such as fault features, defect matching identification and temperature into the fusion model, calculating the confidence coefficient of a fault mode, and outputting a cross validation positioning result. According to the invention, high-reliability positioning of mixed line faults and active early warning of insulation defects are realized by carrying out space-time correlation and fusion decision on multi-source monitoring quantities such as traveling waves, partial discharge, circulation, temperature and the like.

An electrical grid fault localization system including: a plurality of current sensors (measurement devices) electrically connected to the electrical grid; a memory for storing a representation of the electrical grid as a plurality of geographical markers, and for storing a plurality of sets of expected time data, each one of the plurality of sets of expected time data associated with each one of the plurality of geographical markers, each member of the set of expected time data based on an expected signal propagation time from, at least one of the plurality of geographical markers to at least one current sensor; a processor communicative with the plurality of current sensors and the memory, the processor configured to receive measured time data of a fault event from, the plurality of sensors to generate a set of fault event time data and to match the set of fault event time data to at least one of the plurality of sets of expected time data and identify in g / outputting at least one matched geographical marker. Methods and computer-readable media directed to electrical grid fault localization are also described.

A system and method of power management for a power generation system is disclosed. A method of power management for a hydrogen generation system including one or more electrochemical stacks, the one or more electrochemical stacks receiving power from an electrical grid including at least one power source, includes: receiving a frequency or voltage reference value for the hydrogen generation system; continually monitoring a frequency or voltage of the electrical grid; and varying a load of the hydrogen generation system in response to the frequency or voltage of the electrical grid differing from the frequency or voltage reference value to restore the frequency or voltage of the electrical grid to the frequency or voltage reference value.

The invention belongs to the field of thermoelectric unit thermoelectric decoupling, and discloses a fused salt energy storage system for thermoelectric decoupling of a power plant and a working method thereof, and the fused salt energy storage system comprises a fused salt electric heating subsystem, a fused salt heat storage subsystem and a fused salt-steam-water heat exchange subsystem which are connected in sequence. The fused salt electric heating subsystem is used for heating low-temperature fused salt by utilizing high-plant electric energy; the fused salt heat storage subsystem realizes high-temperature and low-temperature fused salt circulating transmission and high-temperature fused salt storage; and the fused salt-steam-water heat exchange subsystem exchanges heat with water through high-temperature fused salt to generate steam which is supplied to the corresponding mother pipe. Thermoelectric decoupling is achieved through fused salt energy storage, fused salt energy storage is not limited by geography, arrangement can be flexible, and power transmission loss is low. Energy is released during the peak of power demand and stored during the valley of power demand, so that the loss of a system power transmission network is effectively reduced, peak clipping and valley filling are realized, the peak regulation and difference adjustment capabilities of a power plant unit are enhanced, the flexible demand of peak-valley difference of a power grid can be better adapted, stable power supply of a region is ensured, and efficient utilization of energy is improved.

A method of adjusting energy delivered by a renewable energy system to an electrical grid and an energy-consuming load is disclosed. The method may comprise determining a production schedule of a renewable energy system (RES) and establishing a prioritization order between the electrical grid and the energy-consuming load. The method may further comprise setting a power receiving threshold for the electrical grid or the energy-consuming load based on the prioritization order, and adjusting the energy delivered by the RES by controlling a first amount of energy delivered to the electrical grid and a second amount of energy delivered to the energy-consuming load. A variability schedule of at least one of the first amount of energy or the second amount of energy can be amplified or dampened over a time period relative to the natural variability energy production schedule of the RES.

A gas turbine generator system configured to be electrically interconnected to an electrical grid via a first circuit breaker. The gas turbine generator system includes a compressor configured to output a pressurized gas flow to an electrically heated thermal energy storage system which outputs a heated and pressurized gas flow to a gas turbine to cause the gas turbine to rotate and drive an electrical generator. The electrical generator outputs electric power to the electrical grid via the first circuit breaker, operating in a normally closed position. There is a controller to detect an opening of the first circuit breaker and to close a first switch, in response to the opening of the first circuit breaker. The first switch is connected to the output of the electrical generator and to the electrical input of the electrically heated thermal energy storage system, connecting the generator to the thermal energy storage system.

A computer-implemented method is provided. A processor set selects a number of nodes. The processor set filters anomalous data from historical data for each node in the number of nodes to generate a refined historical data. The processor set trains a number of computational models using the refined historical data to generate a number of machine learning models for forecasting electrical rate deviation and fluctuation for the number of nodes. The processor set assigns a composite performance score to each machine learning model based on performance for each machine learning model. The processor set computes anomalous electrical rate fluctuation based on the anomalous data for each node using a stochastic model. The processor set generates a forecast comprising anomalous electrical rate fluctuation, and electrical rate fluctuation and deviation for the number of nodes for a period of time.

Information about power events on the electrical grid may be determined by processing reports of power anomalies from power monitors installed at various points on the electrical grid, such as in buildings of end users of electrical power. A power monitor may process sensor measurements of the power line to determine that a power anomaly has occurred. The power monitor may transmit information about the power anomaly, such as the time and location, to a processing location. The processing location may select power anomaly reports having a similar time and location to determine information about a power event that caused the power anomalies. The information about the power event may include the type, time, and location of the power event. A notification may be sent about the power event to facilitate repairs and reduce risks, such as the risk of electrical fires.

The described technology is generally directed towards implementation of an electric vehicle (EV) as an energy generator for a vehicle to grid (V2G) power discharge operation. Energy available at a battery onboard the EV can be discharged to an electrical grid, e.g., via an electric vehicle supply equipment (EVSE) / wallbox. Prior to power discharge occurring, an ObservationTime can be defined, and while the duration of the ObservationTime has not been met, power discharge between the EV and the grid can be prevented. Further, power discharge can be prevented based on one or more operational conditions not being met at the EV and / or the grid. In the event of the ObservationTime, and the one or more operational conditions being met at the EV and / or the grid, power discharge can be enabled. A GridObservationCompleted parameter, having a binary configuration, can be toggled TRUE / FALSE to control the power discharge operation.

Systems, method, and computer readable medium are provided for a controller for a generator. The system includes a rectifier for converting a first AC signal generated by the generator to a first DC signal; a first DC-DC associated with energy storage and a first mode; a second DC-DC associated with an inverter and a second mode; a switch for alternately toggling between the first DC-DC and the second DC-DC, wherein the first mode prevents output to the electrical grid, and the second mode enables inversion of the second DC signal to a second AC signal via the inverter; and a processor that uses the indicator to operate the switch to operate the generator in the first mode when a connection to the grid does not conform with a parameter, and operate the generator in the second mode when the connection to the grid conforms with the parameter.

The invention discloses an inter-harmonic source positioning and propagation path tracking method for a multi-terminal flexible direct-current system. The method comprises the following steps: acquiring an electrical main wiring diagram of the multi-terminal flexible direct-current system, alternating-current side frequency of each converter station, rated capacity and voltage; when inter-harmonics are monitored to exceed the standard in the multi-terminal flexible direct current system, acquiring frequency and amplitude data of inter-harmonic components at the ports of the alternating current side and the direct current side of each converter station; determining a direct current side inter-harmonic frequency needing to be tracked by the multi-terminal flexible direct current system, determining an inter-harmonic frequency and amplitude corresponding to an alternating current side of each converter station, and determining a source station generating inter-harmonics in the multi-terminal flexible direct current system; obtaining current intermediate harmonic amplitude data of each direct current line of the multi-terminal flexible direct current system, and realizing propagation path tracking according to the amplitude of direct current side inter-harmonics needing to be tracked in each line. According to the method, inter-harmonic source positioning of the multi-terminal flexible direct current system is realized, and path tracking of inter-harmonics of the multi-terminal flexible direct current system in a direct current transmission network is realized.

An example operation includes one or more of determining that a transport at a location will be idle for an idle time duration prior to a predicted event or outage at an electrical grid servicing the location; providing the transport with an estimated duration of the predicted event or outage, and an estimated electricity usage at the location during the duration of the predicted event or outage; and charging the transport during at least a portion of the idle time duration to at least meet the estimated electricity usage.

According to an embodiment, a method includes receiving sensor data measured by a plurality of SCADA-enabled sensors associated with an electrical grid and identifying a plurality of momentary outages associated with the electrical grid based on the sensor data. The method further includes predicting (1) a plurality of possible sustained outages associated with the electrical grid based on the plurality of momentary outages and (2) a sustained outage likelihood from a plurality of sustained outage likelihoods for each possible sustained outage from the plurality of possible sustained outages based on the plurality of momentary outages.

A system and method for establishing a microgrid from an existing electrical grid whereby the system provides a remote terminal that collects data from the electrical grid and the microgrid and communicates the data back to and from the microgrid and the electrical grid, whereby the remote terminal unit may continuously monitor specific parameters from the microgrid and the electrical grid, such as distributed generators, converters, and loads, including power levels, charge levels, voltage levels, current flow, temperature, breaker status, and other information pertinent to the microgrid and the electric grid, while the RTU is designed for microgrid islanding and power flow.

A medical imaging system includes an X-ray source configured to emit X-rays. The medical imaging system also includes a high voltage generator configured to provide power to the X-ray source. The medical imaging system further includes a high efficiency power distribution unit configured to receive electrical power from an electrical grid and to store the electrical power, wherein the high efficiency power distribution unit includes an active rectifier configured to regulate a high voltage direct current outputted to components of the medical imaging system including the high voltage generator.

A method including: operating a pumped-heat energy storage (“PHES”) system in a generation mode to generate electricity; and responsive, at least in part, to a determination that a power generation plant will reduce supply of electricity to an electrical grid by a reduction amount of electricity, changing modes of the PHES system from the generation mode to operate in a charge mode. Operating in the charge mode can include receiving a charge amount of electricity, at least equal to the reduction amount of electricity, into the PHES system from the power generation plant and converting at least a portion of the charge amount of electricity to stored thermal energy.

The present disclosure relates to a method for protecting an electrical power collection system comprising an electrical grid being electrically coupled to an electrical branch, the electrical branch comprising a plurality of switches for connecting or disconnecting the electrical branch at respective positions on the electrical branch, wherein a distributed energy resource is electrically coupled to a node on the electrical branch. The method includes detecting a fault occurrence on the electrical branch based on a monitored voltage and / or current of the electrical branch; limiting, based on the detecting a fault occurrence, a power flow from the electrical branch to the electrical grid; adjusting, based on the detecting a fault occurrence, a voltage and / or current on the electrical branch; determining a fault location based on the adjusted voltage and / or current on the electrical branch; and disconnecting a portion of the electrical collection system based on the determined fault location.

Systems connected to an electrical grid for delivering electrical power thereto and methods of controlling such systems are provided. The electrical system includes a plurality of power generators. A system-level controller receives a demand signal from the electrical grid. The system-level controller generates first and second power production commands for respective first and second power generators. The first power production command is based on an excluded zone of operation for the first power generator. The first and second power production commands are transmitted to the plurality of power generators so as to control a power output of the first power generator according to the first power production command and to control a power output of the second power generator according to the second power production command. The power output of the first power generator is outside of the excluded zone of operation for the first power generator.

A method for detecting discrepancies in an electrical grid configuration includes receiving network-communicated telemetry data from a plurality of grid monitoring devices of an electrical grid over a computer network. The apparent grid configuration is estimated based at least in part on the network-communicated telemetry data, and compared to a digital documented configuration of the electrical grid stored in computer storage. Based on the comparison, an indication of a potential discrepancy between the apparent grid configuration and the digital documented grid configuration is output.

A power supply that extracts power from the electromagnetic field surrounding an electrical cable of an electrical grid over a wide current range through the electrical cable. The power supply includes multiple power supply modules connected in parallel across the same input ferromagnetic core and across the same output capacitor. The power supply modules have different numbers of windings across the ferromagnetic core, and when the output voltage exceeds an allowable value for a particular power supply module, a short circuit is applied across the winding of each power supply module.

A power generation system for supplying power to at least one electrical grid of an aircraft, the power generation system comprising a control device configured to receive a universal operational setpoint and to output a first parameterized setpoint (PCONS1) of a first converter (C1) and a second parameterized setpoint (PCONS2) of a second converter (C2), each parameterized setpoint (PCONS1, PCONS2) being a power supply for switching between the converters (C1, C2) and the first converter (C1) and the second converter (C2). The control device is controlled by a voltage regulation setpoint (RegU) of the distribution voltage or an auxiliary regulation setpoint (RegA) for the turbine, the control device being configured to output a parameterized setpoint with a stable delay with respect to the parameterized setpoint of the voltage conversion (TransU) for the auxiliary conversion (TransA) such that the voltage regulation (RegU) is extended during the auxiliary conversion (TransA).

A power supply system and method for operating an electrical grid having coupled thereto at least one fluctuating source of AC power generated from renewable energy, consumers creating a fluctuating AC power demand, at least one grid forming controllable inverter coupled to an electric battery, and the power supply system including a controller. The controller being configured to perform a method of:operating the at least one fluctuating source of AC power as a slave to the grid, measuring grid frequency,controlling grid frequency with the controllable inverter as master controller to obtain a desired grid frequency,supplying power from the electric battery through the controllable inverter to the grid when the measured gridfrequency is below the desired grid frequency by more than a first lower margin, and withdrawing power through the controllable inverter from the grid to the electric battery when the measured grid frequency is above the desired grid frequency by more than a second first upper margin.

The invention provides an importance degree evaluation method and device of a power transmission line, electronic equipment and a storage medium, and can be applied to the technical field of electric power. The method comprises the following steps: acquiring perfection evaluation data corresponding to each evaluation index for evaluating the importance of the power transmission line; wherein the perfection degree evaluation data comprises at least one expert based on index data of the evaluation index and a perfection degree score for evaluating the perfection degree of the evaluation index; for each evaluation index, based on the perfection evaluation data and the index type of the evaluation index, obtaining the index importance of the evaluation index; and obtaining the comprehensive importance of the power transmission line based on the index importance of each evaluation index. According to the method provided by the invention, various evaluation indexes for evaluating the importance of the power transmission network are classified and evaluated, so that a differentiated evaluation system which better conforms to the operation characteristics of the power distribution network is constructed, and the accuracy of power transmission line importance evaluation is effectively improved.

A method of operating a heating system of a wind turbine connected to an electrical grid. The method includes receiving, via a heating circuit of the heating system, a voltage signal from the electrical grid. The method also includes processing the voltage signal using the heating circuit of the heating system. Processing the voltage signal using the heating circuit of the heating system includes superimposing a pulse width modulation (PWM) signal onto the voltage signal. Further, the method includes providing continuous temperature control to at least one heating element of the heating system via the PWM signal from the heating circuit. In addition, the method includes maintaining a temperature of the at least one heating element within a temperature range using the PWM signal during operation of the wind turbine to minimize temperature cycling of the at least one heating element.

Apparatuses, methods, and systems for configuring a vehicle according to energy requirements of an energy supply (e.g., an electrical grid) are disclosed herein. The energy configuration system may determine an energy plan for the vehicle based on energy requirements associated with the power supply, where the vehicle is capable of distributing charge to the supply, the energy plan including a plan for distributing charge from the vehicle to the supply and / or for extracting charge from the supply. The energy configuration system may then generate movement instructions for the vehicle based on the energy plan.

The present utility model relates to a connector for photovoltaic windows which is designed to transmit the electrical energy generated by a photovoltaic glass sheet installed in a window pane to the frame, thereby allowing it to be integrated into the electrical grid of the building. The connector consists of flexible conductors embedded in the window joint, which is an electrical contact system between the pane and the frame, having an insulating sleeve. The main advantages include its ease of installation, durability, energy efficiency and aesthetic design, ensuring discrete integration without affecting the functionality of the window. The invention can be used for residential, commercial and industrial buildings seeking to efficiently harness solar energy.

NUCLEAR STEAM SUPPLY SYSTEM AND METHOD This disclosure relates to a nuclear steam supply system, comprising: a nuclear power plant, a heat source circuit, a working fluid circuit, a steam consumer, and a steam heat accumulator, where the nuclear power plant is connected to the heat source circuit, the working fluid circuit is connected to the steam consumer and the steam heat accumulator, the steam heat accumulator is connected to the steam consumer, and the heat source circuit and the working fluid circuit are independent of each other. This disclosure allows for peak levelling load adjustment of the nuclear power plant and steam load adjustment of the steam consumer, while ensuring the operational safety of an electrical grid and a reactor. Summary figure: Fig. 1

An electrical grid system includes: a first obtaining controller that obtains the electric power demand or supply request information from the electric power transmission and distribution facility; a second obtaining controller that obtains an electric storage state information; a third obtaining controller that obtains a vehicle information of an electric vehicle; a supply and demand satisfaction level calculation controller that calculates a supply and demand satisfaction level based on the electric power demand or supply request information; a selection controller that selects an electric vehicle to be guided to the charge or discharge spot based on the vehicle information obtained by the third obtaining controller and the supply and demand satisfaction level calculated by the supply and demand satisfaction level calculation controller; and a communication controller that sends a guide information to the selected electric vehicle.

Method for controlling a wind power plant for generating and delivering electrical energy to an electrical grid (2), the wind power plant (1) comprising a wind turbine (3) configured to be selectively connected to the electrical grid (2), the method comprising controlling the wind turbine (3) among a plurality of operational modes on the basis of different weather conditions.