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46results about "Apparent power measurement" patented technology
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Method and device for recognition of power load and electric appliance types and statistics of electric quantities of different electric appliances
InactiveCN106872824AReal-time monitoring of power consumptionAchieve energy saving and emission reductionSpectral/fourier analysisElectric devicesPower flowPower grid
The invention discloses a method and device for the recognition of power load and electric appliance types and the statistics of electric quantities of different electric appliances. The method comprises the steps: carrying out the sampling of a high-voltage signal and a large-current signal of one side of a power grid, carrying out the analysis of the employed data, recognizing an electric appliance in use in the power grid, monitoring the electric quantity of each type of electric appliance in real time, finding the electric appliance which wastes the electric energy according to the monitoring result, and taking the further measures to achieve the energy saving and emission reduction.
Owner:宁波华创锐科智能科技有限公司
Portable ring network cabinet data tour inspection acquisition method based on internet of things information integration
The invention provides a portable ring network cabinet data tour inspection acquisition method based on internet of things information integration. The portable ring network cabinet data tour inspection acquisition method is characterized by comprising the steps of data acquisition, data inquiring and downloading and data analysis. Signals are transmitted to a portable handheld terminal by utilizing a wifi network environment based on an existing data acquisition module and an uploading module of electrical parameter monitoring equipment and an intelligent switch cabinet, a temperature sensing device of a ring network cabinet electrical equipment temperature monitoring device and an acquisition device, a central processor device and a heating / heat-radiating device of an electrical equipment operation environment regulation and control method and system, and then the portable handheld terminal performs setting and control so as to meet the tour inspection requirements of a ring network cabinet and thus the portable ring network cabinet data tour inspection acquisition method based on internet of things information integration has advantages of being scientific and reasonable, high in applicability and excellent in effect.
Owner:NORTHEAST DIANLI UNIVERSITY
Relay protection device based on 12-bit AD in SOC chip
ActiveCN106053931AImprove reliabilitySatisfy the use of internal assessmentElectric devicesEmergency protective arrangements for automatic disconnectionFour quadrantsPower factor
Aiming at problems that cost of a traditional relay protection device is high, acquisition precision is not high, measurement data is not complete and measured electric energy precision is low, the invention provides a relay protection device based on a 12-bit AD in a SOC chip. A technical scheme is characterized in that a power grid frequency is stored in a CPU module; the CPU module reads a frequency value and makes an acquisition frequency of an AD module which collects data in a period be consistent with a frequency of one period in a power grid; an ADC port in the AD module works under a multi-loop acquisition mode; a pulse counting method is used to accumulate electric energy and time 10ms is taken as a statistics period; an accumulation result is divided into two integers which are stored in an RAM; and one integer stores a pulse value and another integer stores an integer electrical degree. In the invention, a hardware circuit is simplified; under the condition that CT is measured, measured values of active power, reactive power, apparent power, a power factor and four-quadrant electric energy can be provided, and electric energy precision can reach a 0.5S grade.
Owner:HENAN SENIOR ELECTRIC +1
Bidirectional measurement device of electric quantity parameters of distributed photovoltaic grid-connected system
ActiveCN105870974AAccurate measurement of active powerAccurate measurement of reactive powerElectric devicesSingle network parallel feeding arrangementsMicrocontrollerMicrocomputer
The invention provides a bidirectional measurement device of electric quantity parameters of a distributed photovoltaic grid-connected system. The bidirectional measurement device comprises a single chip microcomputer, an alternating-current electric energy measurement circuit and a serial communication interface, wherein the single chip microcomputer is connected with the alternating-current electric energy measurement circuit and the serial communication interface respectively; the alternating-current electric energy measurement circuit comprises an electric energy metering chip CS5463, an alternating-current voltage acquisition unit and an alternating-current current acquisition unit; the alternating-current voltage acquisition unit is connected between a power distribution network and a power utilization network; the alternating-current current acquisition unit is connected between the power distribution network and the power utilization network; the electric energy metering chip CS5463 is connected with the alternating-current voltage acquisition unit and the alternating-current current acquisition unit respectively; the single chip microcomputer adopts a chip STC12C5A60S2, and is further connected with output voltage and output current of a photovoltaic module.
Owner:东台市智创精密制造产业园投资有限公司
Power level identification circuit, power level flag circuit and power level supply system
ActiveUS20140333288A1Measurement using dc-ac conversionMeasurement using ac-dc conversionElectric powerVIT signals
A power level identification circuit includes a power interface, a voltage conversion unit, a waveform detection unit, a signal pre-processing unit and a processing unit. The power interface receives electrical power and first signals indicating a level of the power. The voltage conversion unit receives the power from the power interface and converts the power. The waveform detection unit filters the power and obtains the first signals indicating power level. The signal pre-processing unit shapes the waveform of the first signals indicating power level and thereby generates second signals indicating power level. The processing unit identifies a level of the second signals indicating power level and switches to one of modes of the power level identification circuit corresponding to the identified level of the second signals indicating power level. A power level flag circuit and a power level supply system are also provided.
Owner:CLOUD NETWORK TECH SINGAPORE PTE LTD
Power flow measurement and management
ActiveUS8892268B2Avoid flowContinuous measurementElectric signal transmission systemsLevel controlElectricityPower flow
Methods and systems for measuring and / or managing power consumption by power units connected to an electricity distribution network are disclosed. Power flow to and / or from a power unit connected to an electricity distribution network is controlled in accordance with a control sequence, such that the consumption and / or provision of power by the power unit results in a power flow having a predefined flow pattern, and having a characteristic, such as an amplitude, which can be remotely measured. This measurement may be performed using a method in which a signal indicative of power flowing at a measurement node is measured and correlated with a predefined pattern, and a characteristic of the correlated signal is measured. Thus, power flow characteristics resulting from a group of one or more power flow devices can be remotely detected and measured.
Owner:REACTIVE TECH
Electric power measuring system
ActiveUS20170016942A1Improve measurement reliabilityReduce the amount of calculationCurrent/voltage measurementPower measurement by digital techniqueLow voltageMeasuring instrument
Embodiments of an electric power measuring system capable of computing accurate electric power information using a low voltage measuring instrument in a small-scale electric power system are provided. The electric power measuring system may include a first measuring instrument for measuring and detecting a current and a zero-cross point from a distribution line and for generating and outputting current information of the distribution line from the current and the zero-cross point, and a second measuring instrument for computing electric power information of the distribution line according to a voltage thereof and the current information output from the first measuring instrument.
Owner:LSIS CO LTD
Method for evaluating small current variable by apparent power
ActiveCN110988453AConvenient for security workAvoid tripping and power outagesTesting dielectric strengthElectric devicesSecurity checkCoulometer
The invention discloses a method for evaluating a small current variable by apparent power, and belongs to the technical field of electromagnetic measurement. The method comprises the steps of S1, detecting a small current on a line; S2, collecting the current detected in the step S1, and multiplying the current by a given apparent voltage to obtain apparent power; S3, accumulating the apparent power obtained in the step S2 in real time to obtain apparent electric quantity; and S4, reading the apparent electric quantity in the step S3 once at an interval T, calculating the variation of the apparent electric quantity in each time period, comparing the relative variation amplitude of the apparent electric quantity variations in two adjacent time periods, and making a decision of continuing to detect or report according to the relative variation amplitude. According to the judgment method, the change trend of the damage energy in the line is automatically judged according to the change amplitude of the apparent electric quantity in the adjacent same-length time periods, the development situation of the damage energy is mastered, and an early warning signal is given when the increase amplitude is large, so that workers are reminded to take security check measures, safe production is ensured, the waste of raw materials is avoided, and the loss is reduced.
Owner:山东计保电气有限公司
Malignant load identification method, device and equipment, and storage medium
PendingCN112816816AImprove recognition accuracyElectric devicesElectrical testingIdentification devicePower usage
The embodiment of the invention discloses a malignant load identification method. The method comprises the following steps: acquiring power utilization parameters of power utilization equipment at a plurality of moments; determining reactive power at each moment based on the power utilization parameters at each moment; and outputting a malignant load identification signal when the change of the reactive power at the plurality of moments does not meet a first change condition, wherein the malignant load identification signal is used for representing that the electric equipment is a malignant load. The embodiment of the invention also discloses a malignant load identification device, malignant load identification equipment and a storage medium.
Owner:无锡小净共享网络科技有限公司
Multi-phase electric energy meter, counting method thereof and computer readable storage medium
PendingCN114200204AReduce lossElectric devicesPower measurement by digital techniquePulse numberComputational physics
The invention discloses a multiphase electric energy meter, a counting method thereof and a computer readable storage medium, and relates to the field of electric energy meters, and the counting method comprises the steps: obtaining a plurality of pulse interruptions transmitted by an external metering unit in a first time period; according to the multiple pulse interruptions, the number of active pulses, the number of reactive pulses and the number of apparent pulses are obtained through calculation; according to a power integral weight obtained by the external metering unit in a first time period, classifying the active pulse number, the reactive pulse number and the apparent pulse number according to phases of a preset phase information set to obtain a pulse distribution result; according to the pulse distribution result, active electric energy, reactive electric energy and apparent electric energy corresponding to the phase information set are obtained through calculation. Various types of electric energy calculation can be carried out internally through the pulse number, frequent access with an external metering unit is not needed, and loss of electric energy counting is reduced.
Owner:CLOU GLOBAL TECH CO LTD
Method and system for measuring frequency characteristic of iron core of dry-type voltage transformer
PendingCN113419125ATo achieve the purpose of frequency characteristic measurementElectric devicesResistance/reactance/impedenceConstant frequencyTransformer
The invention relates to the technical field of power transformation equipment, in particular to a method for measuring frequency characteristics of an iron core of a dry-type voltage transformer. The signal generator applies voltage with constant amplitude and adjustable frequency to the iron core, current, active power, reactive power, apparent power and power factors under different frequencies are obtained from the power analyzer, and the purpose of measuring the frequency characteristic of the iron core is achieved. The obtained data is calculated and analyzed to obtain the influence of the frequency on the iron core loss and the iron core magnetic conductivity. The method has guiding significance in the aspect of researching the influence of harmonic waves on the measurement precision of the dry-type voltage transformer.
Owner:HARBIN UNIV OF SCI & TECH
Non-linear power measurement and analysis recorder
PendingCN107991529AEasy to adjustAccurate measurementElectric devicesPower measurement by digital techniqueSignal conditioning circuitsCurrent range
The invention relates to a non-linear power measurement and analysis recorder. The non-linear power measurement and analysis recorder comprises a signal sampling unit, a signal conditioning unit, a range selection unit, an analog-digital conversion unit, an electric isolation unit and a metering subsystem, wherein the signal sampling unit comprises multiple signal sampling circuits; the signal conditioning unit comprises multiple signal conditioning circuits; the range selection unit comprises multiple range switches; the metering subsystem is used for measurement to obtain a value of a sampled signal, controlling one range switch to be switched on according to the value and detecting whether the value of the sampled signal is in the current measuring range, when the value of the sampled signal is in the current measuring range, switching-on of the current range switch is kept, otherwise, the current range switch is controlled to be switched off, and another range switch is controlledto be switched on. Continuous rapid adjustment for the range is realized, and the recorder can be adaptive to non-linear waveform measurement, so that current or voltage measurement is more accurate.
Owner:GUANGDONG ORIENT TELECOMM TECH
Intelligent electricity larceny prevention integrated management system and method
PendingCN110246054AEnergy savingImprove securityData processing applicationsElectric devicesTransformerData acquisition
The invention provides an intelligent electricity larceny prevention integrated management system and method. The device comprises a data collector arranged at a primary side incoming line of a transformer or on an overhead line or a drop-out switch. The data receiver is used for receiving the data; and a load monitoring system master station, the data collector collects primary side three-phase current data; the three-phase current data is sent to a data receiver through a wireless channel; the data receiver uploads power utilization information to the load monitoring system master station through a bus. The load monitoring system master station is configured to obtain uploaded primary side data, and screen out generated power consumption abnormity by comparing the primary side data of the special transformer with a load curve counted by an electric energy meter arranged at a terminal of a corresponding user so as to realize real-time monitoring of the power consumption state of the user.
Owner:ELECTRIC POWER RES INST OF EAST INNER MONGOLIA ELECTRIC POWER +1
Photovoltaic inverter mppt efficiency evaluation method and system, and storage medium
ActiveCN116559524BElectric devicesPower measurement by current/voltageEvaluation resultControl engineering
The application discloses a kind of photovoltaic inverter MPPT efficiency evaluation method, system and storage medium, respectively to measured voltage and measured current are evaluated, then using the result of respective independent evaluation to determine final MPPT efficiency result, compared with the way of traditional direct calculation power then evaluation, effectively reduce the degree of being influenced by output error.And, in the process of processing respectively, by respectively to measured voltage and maximum power point corresponding voltage, to measured current and maximum power point corresponding current are calculated deviation, then using deviation calculation result to carry out tracking efficiency calculation mode, can directly fundamentally guarantee that final calculated result will be less than 100%, i.e., it is in reasonable range, and evaluation result also has real meaning, can effectively reflect the work of photovoltaic inverter.
Owner:HUNAN NEXT GENERATION INSTRUMENTAL T&C TECH CO LTD
Low-rated capacity transformer identification method, device, equipment and medium
ActiveCN115329873BDigital data information retrievalData processing applicationsNameplate capacityElectrical resistance and conductance
The application discloses a low-rated capacity transformer identification method, device, equipment and medium, first, the nameplate capacity value, transformer short-circuit resistance, short-circuit reactance per unit value and historical operation data of the target transformer are acquired. Then, the estimated capacity value of the target transformer is calculated according to the historical operation data, and the voltage regulation rate of the target transformer is calculated according to the transformer short-circuit resistance, short-circuit reactance per unit value and historical operation data. Finally, whether the target transformer has the first low-rated capacity suspicion is judged according to the estimated capacity value and the nameplate capacity value, and whether the target transformer has the second low-rated capacity suspicion is judged according to the voltage regulation rate; if the target transformer has the first low-rated capacity suspicion and the second low-rated capacity suspicion, the target transformer is determined as a low-rated capacity transformer. In summary, the application can realize the automatic screening of the low-rated capacity transformer, and the double suspicion judgment is made by comprehensively considering the nameplate capacity value, the estimated capacity value and the voltage regulation rate, and the occurrence of misjudgment is also effectively reduced.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Electric power measuring system
ActiveUS9863986B2Accurate informationImprove measurement reliabilityElectric devicesCurrent/voltage measurementMeasuring instrumentLow voltage
Embodiments of an electric power measuring system capable of computing accurate electric power information using a low voltage measuring instrument in a small-scale electric power system are provided. The electric power measuring system may include a first measuring instrument for measuring and detecting a current and a zero-cross point from a distribution line and for generating and outputting current information of the distribution line from the current and the zero-cross point, and a second measuring instrument for computing electric power information of the distribution line according to a voltage thereof and the current information output from the first measuring instrument.
Owner:LSIS CO LTD
Platform for monitoring low current by apparent power and processing in real time
PendingCN110988455ADestruction Energy EliminationAvoid tripping and power outagesTesting dielectric strengthElectric devicesPower sensorCurrent sensor
The invention discloses a platform for monitoring low current by apparent power and processing in real time, and belongs to the technical field of electromagnetic measurement. The current on a line isdetected by a current sensor; a current sampling circuit in an apparent power sensor collects the detected current; an arithmetic unit multiplies the collected current by a given apparent voltage toobtain apparent power, and accumulates the apparent power in real time to obtain apparent electric quantity; a central processing unit reads the apparent electric quantity according to a set time interval, calculates the variation of the apparent electric quantity in each time period, compares the relative variation amplitude of the apparent electric quantity variations in two adjacent time periods, and makes a decision of continuing to detect or report to a host; and the host gives an alarm after receiving the alarm signal. The platform judges the change trend of damage energy in the line according to the change amplitude of the apparent electric quantity in the adjacent same-length time periods, and can give an early warning signal to remind a worker to take security check measures whenthe increase amplitude of the apparent electric quantity is large.
Owner:山东计保电气有限公司
Monitoring system
InactiveUS20200292596A1Batteries circuit arrangementsElectric devicesMonitoring systemControl theory
The monitoring system includes: a management server, and a transmission device which obtains, from the power storage system, first charged power index values indicating charged power of the power storage system and input / output power index values indicating input / output power from the power receiving point to which the power storage system is connected to a system, and transmits the index values to the management server via a network. The management server includes: a calculation part which calculates, based on the first charged power index values and the input / output power index values, second charged power index values indicating power charged by generated power of the power generation system connected to the power receiving point of charged power of the power storage system; and a diagnosis part which diagnoses presence or absence of abnormality of the power generation system based on the second charged power index values calculated by the calculation part.
Owner:ORMON CORP
Intelligent load monitoring system of safety type electric energy metering box
The invention discloses an intelligent load monitoring system of a safety type electric energy metering box, which comprises a data acquisition layer, a data transmission layer, a data intelligent processing layer and an application layer, and is characterized in that the data acquisition layer is provided with an intelligent electric meter, a high-precision sensor and an electric energy quality analysis layer, and the data transmission layer comprises a protocol conversion module, an edge conversion module and a communication module; the intelligent data processing layer comprises data access, data processing, data storage, load analysis and intelligent processing, the application layer comprises real-time monitoring, alarm, management, energy efficiency analysis and report, and the electric energy metering box carries out real-time data monitoring on all components in the metering box, collects detailed energy consumption data in each time period, and carries out real-time monitoring on all the components in the metering box. And the collected real-time data is uploaded to the terminal, and is calculated, classified and counted into a table, so that the real-time load condition of each component in the electric energy metering box can be known in time, and the service life of the electric energy metering box is greatly prolonged under the condition that the long-time safe use of the electric energy metering box is ensured.
Owner:ZHONGYAN ELECTRIC (ZHEJIANG) CO LTD
Subsynchronous oscillation monitoring method and device
PendingCN114487537AHazardous operabilityHazardous lifeSpectral/fourier analysisElectric devicesPower gridIntensive care medicine
The embodiment of the invention provides a subsynchronous oscillation monitoring method and device. The subsynchronous oscillation monitoring method comprises the following steps: determining a subsynchronous component signal from a detected electric signal; calculating a subsynchronous comprehensive effective value according to the determined subsynchronous component signal; and judging whether subsynchronous oscillation occurs or not according to the calculated subsynchronous comprehensive effective value. According to the embodiment of the invention, whether subsynchronous oscillation occurs or not can be accurately monitored, so that subsequent targeted treatment is facilitated, and the safety operation and service life of a power grid and a generator set are prevented from being harmed.
Owner:BEIFANG WEIJIAMAO COAL POWER CO LTD
Method and device for improving calibration precision of electricity meter
The invention provides a method and device for improving the calibration precision of an electricity meter, and belongs to the technical field of electricity meter calibration. The method for improving the calibration precision of the electric meter comprises the following steps: S1, collecting a first real-time voltage and a first real-time current; s2, obtaining a first filtering voltage and a first filtering current; s3, obtaining a correction gain coefficient of the filter; s4, acquiring a voltage calibration coefficient and a current calibration coefficient; s5, collecting a second real-time voltage and a second real-time current; s6, obtaining a second filtering voltage and a second filtering current; s7, calculating and obtaining a voltage and current phase difference calculation value based on the second filtering voltage and the second filtering current; and S8, obtaining a power factor standard value, and calculating and obtaining a phase calibration coefficient based on the power factor standard value and the voltage and current phase difference. The method is simple in calibration process, short in period, high in precision and high in success rate, and production efficiency is greatly improved while product performance indexes are guaranteed.
Owner:HEXING ELECTRICAL CO LTD +4
Device for evaluating small current variable by apparent power
PendingCN110988456ADestruction Energy EliminationAvoid tripping and power outagesTesting dielectric strengthElectric devicesPower sensorCurrent sensor
The invention discloses a device for evaluating a small current variable by apparent power, and belongs to the technical field of electromagnetic measurement. The device comprises a current sensor, and is characterized in that the current sensor is used for detecting the current on a line; a current sampling circuit in an apparent power sensor collects the detected current; an arithmetic unit multiplies the collected current by a given apparent voltage to obtain apparent power, and accumulates the apparent power in real time to obtain apparent electric quantity; and a central processing unit reads the apparent electric quantity according to a set time interval, calculates the variation of the apparent electric quantity in each time period, compares the relative variation amplitude of the apparent electric quantity variations in two adjacent time periods, and makes a decision of continuing to detect or report the information. The judgment device judges the change trend of damage energyin the line according to the change amplitude of the apparent electric quantity in the adjacent same-length time periods, and can upload a signal when the increase amplitude of the apparent electric quantity is relatively large so as to remind a worker to take security check measures.
Owner:山东计保电气有限公司
Non-intrusive load identification method fusing transient and steady state characteristics
PendingCN114709926AImprove load identification accuracyElectric devicesArtificial lifeTransient stateFeature vector
The invention discloses a non-intrusive load identification method fusing transient and steady state characteristics, which comprises the following steps of: acquiring voltage and current data when a load operates, thereby acquiring a power sequence of the load, including active power, reactive power and apparent power; detecting the switching state of the load by adopting a sliding window algorithm, and separating transient data and steady state data of the load; required electrical characteristic quantities are extracted from the obtained transient state data and steady state data respectively, and respective characteristic vectors are obtained; inputting the transient feature vectors into a trained XGBoost model, and inputting the steady-state feature vectors into a trained random forest RF model to obtain respective recognition results; basic probability allocation (BPA) is constructed according to the classification recognition result, and fusion is carried out by adopting a D-S evidence theory to obtain a final recognition result; more information of the electric equipment is utilized, and the load identification precision is improved.
Owner:GUIZHOU POWER GRID CO LTD
Monitor small currents with apparent power and deal with them in real time
ActiveCN110988454BDestruction Energy EliminationAvoid tripping and power outagesTesting dielectric strengthElectric devicesSecurity MeasureEngineering
The invention discloses a method of using apparent power to monitor a small current and dispose of it in real time, which belongs to the technical field of electromagnetic measurement, and comprises the steps of S1: detecting the tiny current on the line; S2: collecting the current detected by S1, and then multiplying it by The given apparent voltage is the apparent power; S3: accumulate the apparent power obtained in S2 in real time to obtain the apparent power; S4: read the apparent power in S3 every interval T, and calculate the apparent power in The change in each time period is compared with the relative change range of the apparent power change in two adjacent time periods, and a decision to continue detection or report to the host is made based on the relative change range. This method judges the change trend of the destructive energy in the line according to the change range of the apparent power in two adjacent periods of the same length, grasps its development trend, and gives an early warning signal when the increase range is large, reminding the staff to take security measures , avoid waste of raw materials caused by power outages, and ensure safe production.
Owner:山东计保电气有限公司 +1
A method and system for monitoring energy efficiency of power supply and consumption in green industrial parks and identifying fault responsibilities
ActiveCN107991525BGain a comprehensive view of power qualityImprove power qualityElectric devicesElectrical testingPower qualityWorkstation
Owner:WUHAN UNIV
Power level identification circuit, power level flag circuit and power level supply system
Owner:CLOUD NETWORK TECH SINGAPORE PTE LTD
Broadband oscillation in-situ monitoring and cooperative defense system
PendingCN121484947AData processing applicationsFlicker reduction in ac networkSite monitoringElectric power system
The invention provides a broadband oscillation in-situ monitoring and cooperative defense system, and relates to the technical field of power system control, and the system comprises a new energy substation which is used for obtaining the electrical parameters of a new energy station, calculating the oscillation characteristic quantity of the new energy station based on the obtained electrical parameters, and achieving the evaluation, early warning and control removal functions of broadband oscillation; the regional master station is used for receiving the electrical parameters and the oscillation characteristic quantity sent by the new energy sub-station and positioning an oscillation source so as to realize accurate control in turns; and the dispatching master station is used for monitoring the frequency and voltage level of the power system and the generator tripping quantity information of each regional master station in real time, carrying out system safety check by combining the frequency and voltage level of the system, the generator tripping quantity of each master station and the operation condition of the system, and sending a locking instruction to the related regional master station, thereby realizing effective prevention and control of broadband oscillation on the basis of ensuring the safety of a large power grid. According to the invention, accurate positioning and cooperative prevention and control of broadband oscillation of the novel power system are realized.
Owner:NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1
Distribution transformer terminal power consumption measuring circuit and distribution transformer terminal
PendingCN111650433AReduce the number of wiringReduce Power Measurement ErrorsElectric devicesPower measurement by digital techniquePhase currentsDistribution transformer
The invention relates to a distribution transformer terminal power consumption measuring circuit and a distribution transformer terminal, and belongs to the technical field of distribution transformerterminal intellectualization. The circuit comprises a voltage power consumption measuring circuit and / or a current power consumption measuring circuit. The voltage power consumption measuring circuitcomprises a first metering chip, a current transformer used for measuring each phase of current, and a voltage transformer used for measuring each phase of voltage. The first metering chip is used for calculating the voltage power consumption of each phase according to the acquired voltage and current of each phase of the three-phase voltage of the distribution transformer terminal. The current power consumption measuring circuit comprises a second voltage division circuit and a second metering chip, and the second metering chip is used for calculating the current power consumption of each phase according to the acquired voltage of each phase of the three-phase current of the distribution transformer terminal in combination with the applied current, so that the problems of repeated wiring, poor precision and low efficiency in the power consumption detection process of the distribution transformer terminal are solved.
Owner:STATE GRID CORP OF CHINA +2
An information system architecture management system
ActiveCN111682967BRealize visual managementImprovement of IT operation and maintenance capabilitiesElectric devicesCurrent/voltage measurementIt equipmentIntelligent equipment
The present invention provides an information system architecture management system, including a background management system, a mobile client, a load monitoring subsystem, an intelligent device in a computer room, an environment scanning device in a computer room, and IT equipment, and the IT equipment includes a management system server, an information system server, and a routing device , the intelligent equipment in the computer room includes the intelligent cabinet, the information system server is set in the intelligent cabinet, the background management system runs on the management system server, the management system server and the information system server are connected through the internal network, and the load monitoring subsystem is deployed on the core node of the network and communicates with the The background management system is connected. The computer room environment scanning equipment is used to scan the computer room environment to obtain the computer room modeling data. The background management system is used to realize the three-dimensional display and management of the internal environment of the computer room, IT equipment and resources. The mobile client and the background management system are connected through the network. connected.
Owner:海南电网有限责任公司
Industrial load decomposition method based on harmonic coupling and nonlinear feature fusion
The invention provides an industrial load decomposition method based on harmonic coupling and nonlinear feature fusion, and belongs to the technical field of intelligent power grid monitoring. The method comprises the following steps: acquiring an electrical signal at a main power supply of an industrial load; basic electrical characteristics are extracted based on the electrical signals, and a basic characteristic set is constructed; geometric mean features are determined through the basic electrical features, and a geometric mean feature set and a multi-time scale geometric mean feature set are constructed; combining the basic feature set, the multi-time scale geometric mean feature set and the geometric mean feature set to construct a fusion feature set; training a long-short-term memory network by using the fused feature set; and performing non-intrusive industrial load energy consumption monitoring by using the trained long-short-term memory network. According to the method, the long-short-term memory network is trained by fusing the feature set, and the trained long-short-term memory network set is utilized to carry out non-intrusive load monitoring, so that the energy consumption of each load in the industrial load can be more accurately detected, decomposed and evaluated.
Owner:SHENYANG UNIVERSITY OF TECHNOLOGY
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