Reactive compensation automatic calibrating device
A technology for meter calibration and equipment, which is applied in the field of reactive power compensation automatic meter calibration equipment, can solve the problems of low meter calibration work efficiency, waste of human resources, and increased error rate, so as to save costs and human resources, improve work efficiency, reduce The effect of error rate
Inactive Publication Date: 2015-05-06
南通富士特电力自动化有限公司
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Problems solved by technology
At present, the error caused by the measurement element of the capacitance module is generally corrected manually with precision instruments, but because of the extra process of manual calibration, the work efficiency of the calibration is low, the cost is increased, human resources are wasted, and the error rate is reduced. Increase
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Embodiment 1
[0017] see figure 1 , as shown in the legend, a reactive power compensation automatic meter calibration equipment, including a 20kw program-controlled source and a meter calibration controller. The controller includes 16-bit A / D sampling chip, 32-bit MCU chip and RS485 communication circuit. The A / D sampling chip is connected to the 32-bit MCU chip. Including the command input for man-machine dialogue, the meter calibration controller uses random sequence algorithm and the change of module RS485 receiving port level to identify the measured capacitor module, and uses the number generated by random sequence to solidify the address of the capacitor module, and the meter is calibrated The controller uses the broadcast frame to set the basic parameters of the identified capacitor module, calculates the measurement error coefficient of the capacitor module according to the measured values of the capacitor module and the controller, compares the calculated coefficient with the set...
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The invention discloses a reactive compensation automatic calibrating device. The reactive compensation automatic calibrating device is used for automatically calibrating power parameters such as voltage, current, power factors and harmonic waves and comprises a high-precision programmable source, an A / D (analog / digital) sampling chip, a controller and a communication circuit. The controller is communicated through an RS485 communication circuit, identifies a measured module by means of a random sequence algorithm and through change of the convergent level of the RS485 communication circuit, computes the measurement error coefficient of the measured module according to the measured module and the measurement value of the controller, compares the computed coefficient with a set coefficient range, issues alarm if the computed coefficient exceeds the set coefficient range, and if not, delivers the computed coefficient to the measured capacitor module. According to the reactive compensation automatic calibrating device, through automated setting, numbers generated by random sequences are utilized to solidify the address of the measure module and to avoid address repeating, so that the error rate can be reduced, the working efficiency can be improved, and costs and manpower resources can be saved.
Description
technical field [0001] The invention relates to a meter calibration device, in particular to a reactive power compensation automatic meter calibration device. Background technique [0002] The meter calibration process is an important process in the electronic production process. It is generally used to calibrate the voltage, current, power and other parameters in the controller. At present, the error caused by the measurement element of the capacitance module is generally corrected manually with precision instruments, but because of the extra process of manual calibration, the work efficiency of the calibration is low, the cost is increased, human resources are wasted, and the error rate is reduced. Increase. Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a meter calibration device with high precision, low error, low cost and high efficiency. [0004] In order to achieve the above purpose, the t...
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IPC IPC(8): G01R35/00
Inventor 张澎张劲
Owner 南通富士特电力自动化有限公司