Power quality monitoring deviceIt is a device used to monitor the status of power quality. In the power system, various electrical equipment require power supply, but poor power quality may cause damage to these equipment and even endanger personal health. Therefore, monitoring power quality has become particularly important. So, how to adjustPower quality monitoringWhat about the sensitivity of the device?

Firstly, we need to understandPower quality monitoring deviceThe principle and construction of. The power quality monitoring device mainly consists of three parts: measurement module, analysis module, and control module. The measurement module is used to collect circuit parameter data, the analysis module is used to process the data and analyze the power quality status of the circuit. The control module controls and adjusts the circuit based on the data analysis results. The sensitivity of the power quality monitoring device can be achieved by adjusting the parameters of the measurement module.

Secondly, we need to understand the sensitivity parameters of the power quality monitoring device. The sensitivity parameters of power quality monitoring devices mainly include voltage measurement accuracy, current measurement accuracy, and frequency measurement accuracy. Voltage measurement accuracy refers to the sampling accuracy of voltage waveforms by power quality monitoring devices; Current measurement accuracy refers to the sampling accuracy of current waveforms by power quality monitoring devices; Frequency measurement accuracy refers to the sampling accuracy of frequency waveforms by power quality monitoring devices. The adjustment of these parameters can achieve sensitivity adjustment of the power quality monitoring device.

Next, we will introduce some specific adjustment methods. Firstly, the adjustment of voltage measurement accuracy. The adjustment of voltage measurement accuracy is mainly achieved by adjusting the sampling time and frequency of the sampler. The sampling time determines the sampling accuracy of the voltage waveform collected by the sampler, and the sampling frequency determines the number of points collected by the sampler. The higher the sampling time and frequency of the sampler, the higher the voltage measurement accuracy.

Next is the adjustment of current measurement accuracy. The adjustment of current measurement accuracy is mainly achieved by adjusting the sensitivity and sampling period of the current sensor. The higher the sensitivity of the current sensor, the higher the accuracy of current measurement; The shorter the sampling period, the higher the accuracy of current measurement.

Adjustment of frequency measurement accuracy. The adjustment of frequency measurement accuracy is mainly achieved by adjusting the sampling period of the frequency meter and the accuracy of the counter. The shorter the sampling period of the frequency meter, the higher the frequency measurement accuracy; The higher the accuracy of the counter, the higher the accuracy of frequency measurement.