AC parameter measuring device
A technology of parameter measurement and alternating current, applied in the direction of measuring device, measuring electrical variables, phase angle between voltage and current, etc., can solve the problem of difficult to obtain accurate phase difference, and achieve the effect of high performance and accurate measurement
Inactive Publication Date: 2016-11-02
威立雅能源科技(上海)有限公司
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Problems solved by technology
However, for general electrical parameter measurement equipment, the voltage and current signals collected for electrical parameter measurement are not at the same time in the logical sense, so it is difficult to obtain accurate phase difference
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[0017] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0018] figure 1 It is a system architecture diagram of an AC parameter measuring device of the present invention. like figure 1 As shown, an AC parameter measuring device of the present invention includes at least: a synchronous pulse generation circuit 10 , a multi-channel filter compensation circuit 11 , a phase formation detection circuit 12 , a synchronous analog-to-digital conversion ...
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The invention discloses an alternating current parameter measuring device, comprising: a synchronous pulse generation circuit connected to three-phase six-circuit input and output sampling voltages to obtain other detection synchronous pulses; a multi-channel filter compensation circuit connected to multiple three-phase voltages and currents, The three-phase voltage and current are output after filtering and compensating the various input voltages and currents; the phase formation detection circuit is connected to the output end of the multi-channel filter compensation circuit to form the phase difference output of the three-phase voltage and current; the synchronous mode The digital conversion circuit performs synchronous analog-to-digital conversion on the six-way phase difference signals to obtain the digital signal output of each phase difference; and the MCU is connected to the synchronous analog-to-digital conversion circuit to process the phase differences of the input digital signals to obtain three-phase accurate The phase difference and the precise phase difference of the same-phase current and voltage, through the present invention, can realize the instantaneous fast synchronous sampling measurement of the three-phase current and voltage signals, and can accurately and effectively measure the parameters of the alternating current.
Description
technical field [0001] The invention relates to an alternating current parameter measuring device, in particular to an alternating current parameter measuring device used for measuring electric parameters of a multifunctional GPRS lighting energy-saving control device. Background technique [0002] The measurement of AC parameters usually refers to the measurement of the electrical parameters of power frequency AC signals, mainly including the effective measurement of voltage, current, power factor, frequency, and electric energy. The measurement of the phase difference is a technical key to ensure the measurement accuracy of the electrical parameter measurement device, and its accuracy affects the calculation accuracy of active power and reactive power. Therefore, how to accurately measure the phase difference of the three-phase voltage and current and obtain accurate power factor measurement has become the key to the measurement of electrical parameters. [0003] For the ...
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IPC IPC(8): G01R25/00
Inventor 薛冬梅高宏陆启惠王利军
Owner 威立雅能源科技(上海)有限公司