Analysis of the current status if power quality
Power quality overview
Power quality refers to the quality of AC power supplying to users from public power grid, including voltage quality, current quality, power supply quality and power use quality and other aspects, the ideal public power grid shall supply the power to users by constant frequency, sine waveform and standard voltage, in three-phase AC system, the amplitude of voltage and current of all phases shall be equal, the phases are symmetric and their difference is 120°. Power quality issues including the voltage, current or frequency deviation leads to user’s power equipment can not work normally, any power issues cause the electrical equipment fault or error action.
Current status of power quality and solutions
Due to the nonlinear or asymmetric and other causes of the transformer, transmission lines and a variety of equipment in power distribution system, various issues are generated, including power grid running, power equipment and power supply link, namely power quality issue. Power quality issue will cause the electric equipment fault, neutral cable heating, production line waste product rate rising, data loss, precise instrument can not work normally even get damaged and other issues, even lead to electrical fire, power quality issues need to be controlled by professional equipment.
Miellvar Electric is a professional company engaging in power quality control, the company products are covering harmonic control, reactive compensation, three-phase unbalance control, intelligent power monitoring and comprehensive control for distribution terminal and so on, resolving the distribution power quality issues comprehensively. Harmonic control can enhance the safety and reliability of electricity use; decrease equipment error alarm and error action; reduce computer data error rate; extend the service life of capacitor; reduce electrical equipment heating, decrease equipment maintenance fees, extend the service life of equipment and so on. Reactive compensation control reduces active loss,enhance equipment utilization ratio; improve voltage stability; reduce line loss; avoid electricity fines, electricity expenditure and so on. Three-phase unbalance control can avoid partial voltage unbalance; avoid the equipment gets burnt due to overhigh zero line voltage. Comprehensive control of power distribution end power quality reduces N line current, avoids partial neutral line heating and ageing, reduce the happened rate of electrical fire and so on.
Miellvar Electric provides high quality power quality system solutions.