The invention discloses a detection method and device. The method comprises the steps that three-phase electric quantity signals are received, wherein the three-phase electric quantity signals include three-phase voltage signals and three-phase current signals; a standard message signal and a detected message signal are acquired, wherein the standard message signal is a message signal outputted by a standard merging unit according to the received three-phase electric quantity signals, the detected message signal is the message signal outputted by equipment to be detected according to the received three-phase electric quantity signals, and the equipment to be detected is equipment in digitalized electric energy metering equipment; and the standard message signal and the detected message signal are compared so that a detection result is obtained. With application of the detection method, problems of low equipment detection efficiency in the digitalized electric energy metering equipment in the related technologies can be solved.

Detection method and device

The invention relates to a quick calibration method for error self-correcting of a single-phase intelligent meter. The quick calibration method for error self-correcting of a single-phase intelligentmeter includes a standard source and an electric energy meter, and includes the following steps: A) the standard source supplies rated voltage and rated current for the electric energy meter; B) the outside gives a specific signal; C) the electric energy meter performs calculation according to the register value in a metering chip and the data in the electric energy meter, so as to obtain the error; D) according to the parameters of the metering chip, the error is converted into a power yield value, and the obtained power yield value is written into the metering chip; E) correction of the error of the meter is performed in a sectional manner, and in each section, the section error value between the practical power of the section and the standard power of a meter correction table is calculated; and F) meter correction is completed. The quick calibration method for error self-correcting of a single-phase intelligent meter has the advantages of reducing the original PC, realizing the verification function in the electric energy meter, and being high in the verification speed.

Quick calibration method for error self-correcting of single-phase intelligent meter

The invention provides a calibration method of a three-phase smart electric energy meter. According to the calibration method, a meter calibration table is electrified, a rated voltage and rated current are applied; meter calibration is started; the phase A, phase B and phase C of the electric energy meter are calibrated under a power source of which the power factor is 0.5L; and the calibration meter is terminated. With the calibration method of the invention adopted, the phase A, phase B and phase C can be calibrated simultaneously, and the calibration meter only needs 2 minutes. The calibration method has the advantages of simple steps, high meter calibration efficiency and low production cost.

Calibration method of three-phase smart electric energy meter

The present invention discloses an automatic meter-calibration method for a single-phase electric energy meter production line, wherein a verification device is adopted. The hardware of the verification device comprises a single-phase standard meter, an error detector, a single-phase power supply, a state grid single-phase electric energy meter bracket, an air pump power source crimping device and a platform control module. The automatic meter-calibration method comprises nine meter calibration steps. According to the technical scheme of the invention, the calibration speed of electric energy meters is improved and the yield is increased. Meanwhile, the time-of-day clock error and the electric quantity error of electric energy meters are accurately calibrated. The basic parameters of electric energy meters can be verified, and common hardware problems can be found out. The production process of electric energy meters can be tracked. Moreover, during the calibration process of electric energy meters, key parameters can be recorded and data can be tracked. In case that the power supply is not switched, the errors of electric energy meters are calibrated according to power. Therefore, the switching time and the waiting time are reduced.

Automatic meter-calibration method for single-phase electric energy meter production line

The invention provides a calibration method for an intelligent electric meter, and belongs to the technical field of electric measurement The calibration method includes the steps of enabling an intelligent stage body to power on an intelligent electric meter so that the intelligent electric meter enters a calibration state; acquiring a measured power value from the intelligent electric meter, acquiring a sample power value from a standard meter, and determining a power difference between the measured power value and the sample power value; if the power difference exceeds a preset range, determining the presence of an error in the intelligent electric meter corresponding to the measured power value; transmitting the power difference value to the intelligent electric meter with the error, so that the intelligent electric meter is calibrated according to the power difference; and after receiving a calibration completion signal, completing the calibration process Through the above calibration method, the sample power value of the standard meter and the measured power value of the intelligent electric meter can be obtained, the power difference between the two can be obtained, and then the intelligent electric meter can be calibrated according to the power difference so as to shorten the calibration time and improve work efficiency

Calibration method for intelligent electric meter

The invention discloses an electric energy meter correction method and system and an electric energy meter. The method comprises the steps that meter correction data including an effective voltage value, an effective current value, a power value and electric meter constants of a standard meter platform are received, wherein the effective voltage value, the effective current value and the power value are metered by the standard meter platform; after an electric energy meter metering chip is initialized, an effective voltage value and an effective current value which are metered by an electric energy meter are obtained, and the correction value of a voltage metering parameter and the correction value of a current metering parameter are calculated according to the difference between the effective voltage value metered by the electric energy meter and the effective voltage value metered by the standard meter platform and the difference between the effective current value metered by the electric energy meter and the effective current value metered by the standard meter platform, and written in a register of the electric energy meter metering chip; then, the power value metered by the electric energy meter under the electric meter constants of the standard meter platform is obtained, and the correction value of a power metering parameter is calculated according to the difference between the power value metered by the electric energy meter and the power value metered by the standard meter platform, and written in the register of the electric energy meter metering chip. The electric energy meter correction method and system and the electric energy meter have the advantage that the calculation and writing operation of the correction values of all the metering parameters of the three-phase electric energy meter can be automatically completed through one time of interaction.

Qin Wanmin

Papers

Electric energy meter correction method and system and electric energy meter