Method for monitoring voltage qualification rate by use of electric energy metering device
An electric energy metering device and a technology of voltage qualification rate, which are applied in the field of monitoring voltage qualification rate by using electric energy metering device, can solve the problems of reflecting the authenticity of the power supply voltage qualification rate, the statistical results are subject to a large subjective influence, large capital and human resources, etc. Achieve the effect of improving the quality of power supply service, low cost of device modification and implementation, and improving accuracy and objectivity
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[0029] a kind of like Figure 1-3 As shown in the method for monitoring the voltage pass rate using the electric energy metering device, the main parameters involved in the voltage pass rate include voltage transformer transformation ratio, upper limit voltage, lower limit voltage, loss of voltage parameters, sampling statistics cycle and hardware clock time calibration The above parameters should be preset and stored in the parameter area of the data memory when the metering device is installed, and when the metering device is powered on, the meter initialization program will read the relevant parameters and system time into the memory of the MCU.
[0030] (1) Records of voltage pass rate of monitoring points
[0031] Install the improved electric energy metering device at the monitoring point, such as figure 1As shown, the sampling circuit of the metering device converts the AC voltage analog signal input from the monitoring point into analog-to-digital conversion, conver...
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