Power quality monitoringdeviceIntroduction to the system:

With the development of power electronics technology, direct current transmission and high-power single-phase rectification technology are widely used in the industrial sectorWidely used in electrical equipment, such as high-power thyristor devices, switching power supplies, variable frequency speed regulation, etcType B nonlinear load will absorb or inject harmonic current from the power grid, causing voltage distortion in the power grid and causing grid wavesThe form is polluted, the power supply quality deteriorates, additional losses increase, and transmission capacity decreases. Three phase negative in the power gridLoad imbalance, power system resonance grounding, and other factors can cause negative sequence, as well as high-power rectifiers and nonlinear equipmentHarmonics. The decline in power quality poses a serious threat to the operation of power supply and electrical equipment.

   This device can continuously monitor the harmonic content, total harmonic distortion, and three-phase voltage of the power grid 24/7Balance, flicker, voltage deviation, voltage fluctuation, frequency, active and reactive power of each harmonic, powerPower quality data such as rate factor, phase shift power factor, effective value, positive and negative sequence, transient events, etc.对Power quality monitoring deviceAnalysis of monitoring data can reflect the power supply to users from the public power gridThe AC power quality of the terminal and the impact of various electrical equipment on the power quality of the public power grid under different operating states. Dynamically monitor the adjustment and operation process of power equipment to assist users in resolving power equipment adjustments and operational issuesProblems that arise during the process. Monitor and analyze dynamic parameters in the power system, and provide functional and technical guidance for relevant equipmentQuantitative evaluation should be made to protect the power consumption of important equipment in the system and avoid potential risks caused by power quality issuesA major accident occurred.

Device features:Adopting low-power embedded systems;Realize full indicator monitoring of power quality;Multi loop monitoring for synchronous sampling of all channels;Fully comply withIEC61000-4-30Specify the measurement method in;achievePQDIFFiles are generated locally and can be uploaded to backend software;Sampling rate up toone thousand and twenty-four点/Period, andtenContinuous sampling of cyclic waves;according toIEC61850Standard modeling to meet the protocol requirements of the substation communication layer;Built in large capacity electronic disk as device storage medium, capable of storing data for up to a year;Power quality monitoring deviceReal time capture of transient power quality events, with waveform data stored asCOMMANDFormat;Powerful data statistics and analysis function, allowing on-site personnel to timely understand the operation status of the line.