82 results about "Power measure" patented technology

The invention relates to the technical field of new energy power system control, and relates to a power decoupling method for cooperative control of voltage feed-forward compensation and adaptive virtual impedance. The method comprises the following steps: acquiring a power grid current and a power grid voltage, and calculating a reactive power measured value and an active power measured value of a power grid; virtual synchronous machine control is carried out, and a voltage feed-forward pre-compensation item is introduced into a reactive power control loop; calculating a reactive power control loop after VSG compensation, and obtaining VSG output side voltage and instantaneous angular frequency; self-adaptive virtual impedance control is adopted, a self-adaptive virtual impedance reference value is calculated, line impedance is dynamically adjusted, and a voltage loop input instruction voltage is calculated according to the line impedance; and adjusting the output performance of the inverter according to the instruction voltage. According to the invention, the problem of power fluctuation caused by VSG output voltage amplitude variation is effectively solved, and the dynamic influence of a power coupling item is weakened.

The invention relates to an intelligent testing device for a repeating high-power intermediate relay, which comprises a programmable direct-current excitation power supply module for providing starting voltage for the intermediate relay, and is characterized in that the intermediate relay is respectively connected with a high-precision power measurement module and a high-speed action time acquisition module; the high-precision power measurement module and the high-speed action time acquisition module are both connected with the intelligent criterion analysis module, and the intelligent criterion analysis module is connected with the man-machine interaction and communication module. The intelligent testing device for the intermediate relay is compact in structure, convenient to use and accurate in measurement, has intelligent analysis capability, supports various relay brands and models, is compatible with a 220V / 110V system, has good universality and expansibility, can be widely applied to occasions such as acceptance inspection, field maintenance and troubleshooting of a relay protection device, and has wide application prospects. Therefore, the reliability and safety of the operation of the power equipment are improved.

The invention provides a distribution line fault positioning precision self-correction method based on a digital twin model, and the method comprises the steps: independently constructing a virtual branch of a parallel admittance structure for each phase for each measurement point node of the digital twin model, and initializing the admittance vectors of all virtual branches; obtaining a three-phase current measured value of the distribution line, a three-phase voltage amplitude measured value and a power measured value of each measuring point node, and a corresponding power theoretical value in the digital twinborn model; obtaining a residual vector between the power measured value and the power theoretical value; assigning a division result of the residual vector and the voltage amplitude square matrix to an admittance vector; and acquiring the virtual power of each virtual branch according to the admittance vector, and correcting the admittance parameter of the distribution line in the digital twinborn model according to the current measured value. According to the method, the digital twin model can continuously and automatically track parameter changes of a physical system through a closed-loop correction mechanism, and the precision and reliability of fault positioning based on the model are ensured.

The invention relates to a method for determining the AC linear electrical resistance of a steel pipe, comprising the steps of generating an induced current in a portion (4) of the pipe by means of an induction coil (6) centered on a longitudinal axis (XX) of the pipe and traversed by an alternating current, the coil being housed in a ferromagnetic cylinder head (8) to confine the magnetic field over a predefined surface of the pipe portion, measuring the active power dissipated by the pipe portion subjected to the magnetic field, measuring the amplitude of the produced magnetic field, and determining the AC linear electrical resistance of the pipe portion from the measurements of the dissipated active power and the amplitude of the induced magnetic field. The invention also relates to a device (2) for implementing said method.

To provide a method, system, and apparatus for transitioning power.SOLUTION: The power transfer device may be configured to fit securely into a fuse block, fuse holder, and / or the like. Power transfer devices may transfer power from a source to a load, such as connected to a fuse block and / or fuse holder, while also isolating power to prevent power from being fed back to the source. Power transfer devices may be used to perform tests, measurements, and / or analyses (e.g., voltage measurements, power measurements, frequency analyses, system impedance tests, etc.).SELECTED DRAWING: Figure 1A

The application relates to a light shielding device and a power measurement system. The light shielding device comprises: a plurality of light shielding mechanisms, the projections of the plurality of light shielding mechanisms along a first direction are connected in sequence, the projection of the light shielding mechanism along the first direction is located on a to-be-tested mechanism, and the light shielding mechanism is used for shielding the to-be-tested mechanism; and a detection hole, the plurality of light shielding mechanisms surround and construct the detection hole, and the detection hole is used for exposing an active area of the to-be-tested mechanism along the first direction; wherein the positions between two adjacent light shielding mechanisms are adjustable, so as to change the size of the detection hole. Through the technical scheme provided in the application, the problems of complicated operation and low applicability of the light shielding device in the related art can be solved.

The application provides a kind of launch assembly operating state monitoring device, it relates to launch assembly operating state monitoring technical field, including voltage measurement circuit, current measurement circuit, power measurement circuit, operational amplifier circuit, analog-digital conversion circuit, digital input circuit, digital output circuit, communication circuit and processor circuit, each circuit has electrical connection between each other.The application can realize the analog quantity collection of power voltage, power amplifier module working current and radio frequency signal power of launch assembly, power supply undervoltage and overvoltage, overtemperature and the state monitoring of input and output radio frequency signal power, emergency stop, development of receiving gate sleeve signal, gate sleeve output and the control of indication signal, and the communication transceiver with outside, more comprehensively realizes the monitoring and reporting of launch assembly operating state and protection and fault diagnosis function.

An electric power measurement circuit includes: a period measurement circuit that measures a measurement period; a first measurer that measures (i) a first toggle number that is a number by which a signal value indicated by an input signal to a first target circuit has changed and (ii) a first operation period that is a period during which the input signal is valid; a second measurer that measures (i) a second toggle number that is a number by which a signal value indicated by an output signal from the first target circuit has changed and (ii) a second operation period that is a period during which the output signal is valid; and a calculator that calculates the first power consumption of the first target circuit based on the measured first toggle number, the measured first operation period, the measured second toggle number, and the measured second operation period.

To provide a frequency converter for satellite broadcast reception, and a power measurement system provided with the frequency converter, for performing frequency conversion for a satellite broadcasting signal obtained through a satellite broadcast reception antenna.SOLUTION: A frequency converter 1 for satellite broadcast reception according to the invention includes: an interference wave reception antenna 11 having receiving gain in a predetermined image frequency band; channel under interference selection means (an interference wave detection part 12 and a frequency determination part 13 / 13a) for identifying a channel under interference in a satellite broadcasting signal from a reception signal obtained through the interference wave reception antenna 11; frequency conversion means for channel under interference (a second frequency conversion part 17 and a bandpass filter 18) for generating a second intermediate frequency signal regarding the channel under interference by performing frequency conversion for the signal of the channel under interference; and output means (a mixer 21 or the like) for transmitting a signal based on the second intermediate frequency signal regarding the channel under interference to a predetermined home distribution system with one coaxial cable.SELECTED DRAWING: Figure 1

The invention is suitable for the technical field of communication, and particularly relates to a chip power tolerance robustness detection method and system and a storage medium. According to the invention, the insertion loss of the first power measurement unit and the insertion loss of the second power measurement unit are calibrated; calculating a first gain value of the chip to be measured according to the first measurement value and the second measurement value; stopping transmitting the input signal to the power amplifier, and recording a second quiescent current of the current second power supply; comparing the first quiescent current with the second quiescent current; calculating a second gain value of the chip to be measured according to the third measurement value and the fourth measurement value; and comparing the first gain value with the second gain value, and judging whether the first comparison value or the second comparison value exceeds a preset comparison value: if so, taking the third measurement value as the tolerance limit value of the chip to be tested. Compared with the prior art, the tolerance of the to-be-detected chip can be accurately detected and evaluated, so that the chip is prevented from being damaged due to the fact that a high-power signal is received.

A power measurement system, especially for a spindle or drive axes of a numerical machine tool, comprises a microcontroller (1), at least one analog-to-digital converter (2) connected to a current sensor (4), wherein the sensor (4) is connected for measurement purposes to an electric motor (5), especially one driving a spindle or drive axes of a numerical machine tool. The subject of the application is also a method of measuring power implemented using a power measurement system.

The application provides a power measurement device and method based on an analog quantum voltage source. The first standard voltage source in the power measurement device is an analog quantum voltage source and is used to generate a first standard quantum voltage in a sinusoidal waveform. The second standard voltage source is an alternating quantum voltage source and is used to output a second standard quantum voltage in a sinusoidal step wave. In the case where the other end of the switch is connected to the second standard voltage source, the processor adjusts the first standard quantum voltage based on the second standard quantum voltage. In the application, the standard quantum voltage of the alternating quantum voltage source is transmitted to the analog quantum voltage source. The pure sinusoidal wave signal of the analog quantum voltage is conducive to reducing the difference value of the power difference sampling, realizing continuous measurement, reducing the requirement for the stability of the power source, and realizing a double-pass analog quantum voltage source, and simplifying the differential measurement control of the voltage and the current in different phases.

Described herein are systems, methods, and other techniques for aligning a terminal in a satellite communication system. An indicator of a test slot is sent to the terminal to designate a specific frequency allocation for testing. The satellite obtains a set of multi-slot power measurements based on signals received, including a first signal transmitted by the terminal on the test slot. The measurements are transmitted by the satellite to a ground station in a second signal. A set of power measurements specifically for the test slot are extracted from the multi-slot power measurements. The extracted power measurements are transmitted by a gateway to the satellite in a third signal and then from the satellite to the terminal in a fourth signal. These power measurements are utilized by the terminal to perform pointing and cross polarization alignment and power adjustment.

A shaft power monitoring system based on wireless power supply and micro-strain measurement comprises a rotor, a stator, a wireless power supply system and a display end, the rotor part collects shafting strain signals through a strain gauge, and after signal conditioning and digital processing are completed through a microcontroller, non-contact transmission of data is achieved through a wireless transmitting module; meanwhile, electric energy required by operation is obtained through a wireless power supply receiving end and a rectifying circuit board; the stator part receives and analyzes data transmitted by the rotor through a wireless receiving module, and signal management and state monitoring are carried out by a microcontroller; meanwhile, a rotating speed measuring module arranged in the stator monitors the rotating speed of the shaft system in real time, and continuous and stable energy support is provided for the rotor through a direct-current power supply and a wireless power supply transmitting end. According to the invention, through combination of a high-precision micro-strain measurement technology, wireless power supply and wireless data transmission, technical difficulties of a traditional shaft power measurement system can be effectively solved.

The present invention relates to a substrate processing equipment, and more particularly, to a substrate processing equipment equipped with a current / voltage / power measurement module for measuring the current / voltage applied for generating and maintaining plasma during substrate processing using plasma, and further for measuring the power of incident and reflected waves. The present invention discloses a substrate processing equipment comprising a process chamber forming a sealed processing space in which plasma is formed to perform substrate processing; a substrate support unit disposed in the processing space on which a substrate is seated; and a gas injection unit for injecting a process gas into the processing space, wherein the substrate support unit includes a heater for heating the seated substrate, and a current / voltage / power measurement module for measuring an RF voltage, current, and power of an incident wave and a reflected wave generated by plasma in the processing space is installed adjacent to a heater power line for supplying power to the heater.

The present application provides a thermoelectric conversion module for calorimetric power measurement and a power measurement method, the thermoelectric conversion module for calorimetric power measurement comprising: a calorimetric body for absorbing power and converting the absorbed power into heat energy; the temperature measuring circuit is used for outputting a corresponding voltage value based on the heat energy, and the voltage value is used for determining the size of the power; the temperature measuring circuit comprises a bridge and three operational amplifiers; the electric bridge comprises a temperature measuring resistor, the temperature measuring resistor is in contact with the calorimetric body, and the resistance value of the temperature measuring resistor is correspondingly changed based on the magnitude of the heat energy; the bridge is used for outputting corresponding differential signals before and after calorimetric power measurement in response to the change of the resistance value of the temperature measurement resistor, and the three operational amplifiers are used for amplifying the differential signals so as to output the voltage value, so that the power measurement efficiency can be improved.

The embodiment of the invention provides a power measurement system and method, and relates to the technical field of terminal equipment. According to the power measurement system provided by the embodiment of the invention, in the process of synchronously acquiring the current and the voltage, the condition of deviation of the acquired current caused by the characteristics of the voltage acquisition module can be avoided, and the accuracy of instantaneous power measurement is improved. The power measurement system comprises: a current acquisition module configured to: receive a first input voltage and a second input voltage; the voltage acquisition module is configured to pull down a first voltage corresponding to the first end of the first load so as to enable the first voltage to form a first input voltage, and a first voltage drop exists between the first input voltage and the first voltage; and the current compensation module is configured to pull down a second voltage corresponding to the second end of the first load so as to enable the second voltage to form a second input voltage, a second voltage drop exists between the second input voltage and the second voltage, and the first voltage drop is equal to the second voltage drop.

The present invention relates to a substrate processing equipment, and more particularly, to a substrate processing equipment equipped with a current / voltage / power measurement module for measuring the current / voltage applied for generating and maintaining plasma, and further for measuring the power of incident and reflected waves. The present invention discloses a substrate processing equipment comprising a process chamber, a substrate support unit, a gas injection unit, and at least one RF power source. The substrate support unit includes a heater and an RF energy blocking part installed above the heater. A current / voltage / power measurement module is installed adjacent to a grounding wire, which is connected to the RF energy blocking part, to measure the RF voltage, current, and power of an incident wave and a reflected wave generated by the plasma.

The application discloses a kind of laser power measurement method, system, equipment, product and medium, the method includes: obtaining first thermoelectric voltage dataset;Based on the operation processing to first thermoelectric voltage dataset, obtain the first voltage rate of change sequence corresponding to first thermoelectric voltage dataset, wherein the first voltage rate of change sequence includes the first voltage rate of change between the first voltage signal value collected in every two adjacent sampling time in acquisition process;Based on the search to first voltage rate of change sequence, obtain the first maximum voltage rate of change in first voltage rate of change sequence;Based on first maximum voltage rate and calibration curve, obtain the test power value of the laser output to be tested, wherein the calibration curve is fitted based on several calibration powers and the second maximum voltage rate obtained based on several calibration powers for several calibration processes.This application can effectively solve the problem of slow response time of thermoelectric pile type laser power meter.

A system and method for filtered visualization of dynamic load monitoring via a power distribution unit (PDU) collects power measurement data measured from each end device plugged into, and drawing operating power from, the PDU. The PDU collects the power measurement data into power state data over a line cycle or series of time intervals. Within the PDU, Kalman filtering determines a current power state estimate based on the measured power state data balanced with predictions of subsequent power state, as well as tuning parameters defining the balance from line cycle to line cycle. The resulting power state estimate may be displayed or presented to provide a more intuitive representation of operating power drawn by the end devices as opposed to raw power measurement data, which may be subject to fluctuation caused by high performance / AI pulsing loads.

The present invention relates to a substrate processing apparatus including a current / voltage / power measurement module for measuring a current / voltage applied to generate and maintain plasma during substrate processing using plasma, and incident wave and reflected wave power.SOLUTION: The substrate processing apparatus according to an embodiment includes a process chamber 10 in which plasma is formed and which forms a sealed processing space S for performing substrate processing, a substrate support 11 which is provided in the processing space S and on which a substrate W is placed, and a gas injection part 12 which injects a gas for performing a process into the processing space S. the substrate support 11 is provided with a heater 41 for heating the placed substrate W, and a current / voltage / power measurement module 100 for measuring RF voltage, current, and power of an input wave and a reflected wave generated by plasma generated in the processing space S is installed adjacent to a heater power line 42 for supplying power to the heater 41.SELECTED DRAWING: Figure 1

Certain aspects of the present disclosure provide techniques for site control. An example method includes obtaining a plurality of power measurements from one or more site energy sources and one or more points of common coupling associated with the one or more site energy sources, wherein the one or more points of common coupling correspond to one or more nodes where the one or more site energy sources are coupled to a grid; determining whether the plurality of power measurements violate a grid limit of the grid for at least a threshold time period; and sending a trip signal to at least one inverter controller associated with at least one site energy source of the one or more site energy sources based on the plurality of power measurements violating the grid limit for at least the threshold time period.

The invention relates to a method (1) for supplying an electrical load with electrical energy, the method (1) comprising the following steps:-measuring (10) a voltage between a voltage source and the electrical load and a current between an AC voltage source and the electrical load,-calculating (30) an apparent power value S in a main electrical network (110),-determining an apparent power measurement limit value Slim, -estimating (72) a required power value SLoad and a required active power value PLoad required by the at least one electrical load (200), if SLoadgt; if PLoad < = S, injecting (750) a reactive power supplement Qsupp from the auxiliary grid into the main grid, if lSLoadgt, and if lSLoadgt, injecting (750) a reactive power supplement Qsupp from the auxiliary grid into the main grid, if lSLoadgt; if PLoadgt, Slim, and if PLoadgt; s, injecting (752) the reactive power supplement Qsupp and the active power supplement Psupp from the auxiliary grid into the main grid,-otherwise, not performing the injection from the auxiliary grid into the main grid.

The invention provides an electromagnetic narrow pulse high-precision power measurement system and measurement method, the measurement system is provided with a standard horn antenna and a microwave power measurement device, and the microwave power measurement device is connected with the standard horn antenna through a radio frequency cable; the measurement method comprises the steps of calibration source full-temperature output power calibration, wired link insertion loss measurement, calibration signal digital acquisition processing, electromagnetic narrow pulse signal acquisition processing and electromagnetic narrow pulse power calculation. The method is more suitable for power measurement of narrow pulse microwave signals, eliminates the influence of temperature on power measurement, can provide powerful support in military application and civil application, and has wide and important application prospects and value.

The application relates to the technical field of electric energy metering, in particular to a wide-frequency alternating-current power measuring device and method based on thermoelectric converters, wherein the device comprises a band-pass filter and a band-stop filter, and the fundamental wave voltage, the fundamental wave current, the harmonic wave voltage and the harmonic wave current are obtained based on the measured voltage signal and the measured current signal; the first adder and the second adder and the first subtractor and the second subtractor output the fundamental wave component and the harmonic wave component; the first to fifth thermoelectric converters perform electric-thermal conversion to obtain equivalent direct-current parameters corresponding to the fundamental wave component and the harmonic wave component; and the sampling microcontroller obtains the fundamental wave power, the harmonic wave power and the fundamental wave power factor. According to the application, the measurement of the fundamental wave power and the harmonic wave power can be realized based on the thermoelectric converters under the condition that the voltage and current signals have harmonics, the fundamental wave power factor is obtained, the range width of the frequency response is improved, the cost of the high-frequency power measurement is reduced, and the accuracy and the practicability are higher.

On one hand, a wireless node (e.g., UE, gNB, etc.) receives a reference signal (RS-P) for positioning on the corresponding bandwidth of one or more paths, including the earliest path; and measures the reference signal received power (RSRP) associated with the earliest path of the RS-P based on the sum of energy in the corresponding bandwidth of at least a number of samples from the peak of the earliest path.

The invention discloses a rapid noise traction method and device, and belongs to the technical field of chip measurement. The method comprises the following steps: calibrating a noise traction system by using a power meter in advance so as to perform a noise traction process by using the calibrated noise traction system; the noise traction system does not comprise a noise source; after S parameter calibration is completed, deducing a relational expression of a system noise coefficient by using a function of the noise coefficient with respect to a source reflection coefficient and a power measurement result; and on the basis of the relational expression of the system noise coefficients, noise parameters of the tested piece are extracted by using variable input impedance and a noise traction technology. According to the invention, the test speed and the test precision in the noise traction process can be improved.

This invention discloses an auxiliary frequency regulation system based on variable load in a power plant, comprising a 220kV high-voltage busbar, a main transformer, a distributed control system (DCS), a remote terminal unit (RTU), a power measurement device, a generator, a high-voltage station service transformer, a 6kV station service busbar, a load transformer, and a variable load system. The coal-fired generator is connected to the main transformer and the high-voltage station service transformer via the power measurement device. The main transformer is connected to the 220kV high-voltage busbar via a first switch. The high-voltage station service transformer is connected to the 6kV station service busbar via a second switch. The 6kV station service busbar is connected to the high-voltage side of the load transformer via a third switch. The low-voltage side of the load transformer is connected to a large-capacity load via a power control device. The DCS establishes a communication connection with the power control device to participate in the unit's AGC (Automatic Generation Control) process, effectively improving the power plant's response speed to AGC commands, assisting in unit frequency regulation, meeting the requirements of power grid performance indicators, and increasing the economic benefits of power generation enterprises.

The invention relates to the technical field of power electronic equipment stability and optimization control research, and provides a novel networking control method for improving the synchronous stability of a current converter. The method comprises the following steps: acquiring an active power measurement value output by a common coupling point converter, inputting the active power measurement value into an active synchronization ring, and generating a common coupling point voltage phase reference value; obtaining an active power difference value between the output active power measurement value and the active power reference value, and inputting the active power difference value into a proportional controller to obtain an output current d-axis component reference value; obtaining a reactive power difference value between a reactive power measurement value output by the common coupling point converter and a reactive power reference value, and inputting the reactive power difference value into a proportional-integral controller to obtain an output current q-axis component reference value; acquiring a d-axis component measured value and a q-axis component measured value of the output current, and inputting a d-axis component reference value and a q-axis component reference value of the output current of the converter into a vector current controller, so as to obtain a d-axis component reference value and a q-axis component reference value of the output voltage of the converter; and performing Parker inverse transformation on the d-axis component reference value of the output voltage and the q-axis component reference value of the output voltage to generate a modulation signal, and finally generating a PWM signal of the converter through a triangular carrier modulation mode.