Power quality mainly includes the quality of voltage, frequency, and waveform.Power quality monitoringdeviceIt mainly measures voltage deviation, voltage fluctuation and flicker, frequency deviation, harmonics and voltage asymmetry, imbalance, etc.

Monitoring the reliability of power supply through power quality monitoring is also one of the important tasks. Power supply reliability refers to the ability of a power supply system to continuously supply electricity, which is an important indicator for assessing the quality of power supply system energy. It reflects the degree to which the power industry meets the national economic energy demand and has become one of the standards for measuring a country's economic development level.

Power supply reliability can be measured by a series of indicators such as power supply reliability rate, average user outage time, average user outage frequency, and equivalent system outage hours; At present, the reliability rate of power supply in general urban areas in China has reached over 3 9s (99.9%), and the average annual power outage time for users does not exceed 8.76 hours; The number of major urban centers has reached over 99.99%, with an average annual power outage time of no more than 53 minutes for users.

Not only can it accurately measure parameters such as single-phase or three-phase current, voltage, phase difference, power, etc., but it also has power quality analysis functions such as harmonic analysis and imbalance analysis, which has unparalleled cost-effectiveness. Whether it is industrial on-site measurement or used as a scientific research instrument, it is very convenient, reliable in operation, and accurate in data.

At present, the widely used fields include high-precision energy efficiency evaluation and power quality monitoring in fields such as ship electric propulsion, motors, wind turbines, water pumps, wind power generation, rail transit, electric vehicles, frequency converters, special transformers, fluorescent lamps, LED lighting, and electricity metering.