The power quality monitoring device can realize the monitoring of voltage deviation, frequency deviation, voltage fluctuation and flicker, unbalance, harmonic and interharmonic required by the state, as well as the capture and analysis of transient power quality events such as voltage temporary rise, voltage temporary rise and voltage interruption.

For a region, the causes of power quality pollution are very complex, which may be transmitted from other regions or generated by the load in the region. Therefore, the power supply company needs to build a power quality monitoring and evaluation system covering the whole service area, so as to realize the power quality of the monitoring area and each power user, quickly and accurately locate the power quality pollution source, and quantitatively evaluate the responsibility of power quality pollution.

This requires the installation of power quality online monitoring device, because the power quality online monitoring device is a long-term monitoring and stable operation equipment, which is convenient for continuous collection, recording and storage of power quality information.

There is also a power quality analyzer on the market. The power quality analyzer is suitable for irregular detection in the operation of power system. Due to the particularity of power quality problems, the data monitored by this monitoring method can not fully and accurately reflect the power quality information of power system and grid, Because to carry out all-round power quality monitoring in the power system, the on-line power quality monitoring device should be used.

Power quality monitoring equipment is facing a better market prospect. With the gradual wide application of electronic equipment, the sensitivity of various electrical equipment to power quality is increasing. As a necessary tool for power supply, power generation and power consumption to understand the power quality, the power quality on-line monitor will develop rapidly and have great market potential in the future.