Supply DETSF dynamic filter device

With a single-chip microcomputer as the core controller, it has multiple analysis and control methods such as harmonic current and power factor. At the same time, it uses a thyristor as the switching switch of the filter bank. It has zero-crossing switching, fast switching, no inrush current, excellent filtering effect, and takes into account no Power compensation function. Phase-separated filtering compensation can be carried out at the unbalanced load operation site. The equipment has advanced technology, complete functions, high reliability and low maintenance. Technical featuresrr
It has both harmonic filtering and fundamental wave reactive power compensation functions.
High filtering efficiency: It can filter out characteristic harmonics of various orders, and the harmonic filtering rate is as high as %.
High compensation accuracy: Adjusting the switching capacity can make the compensation accuracy meet the reactive power change requirements of the system.
Complete protection: short circuit, overload, overvoltage, undervoltage and equal protection.
Effectively reduce system losses and have certain energy-saving effects.
Working principlerr
The dynamic passive filter device uses capacitors and reactors connected in series to connect to the power grid. The controller automatically controls the thyristor to quickly switch on and off the filter capacitor bank, aiming at harmonics of different frequencies. The low-impedance filter channel is tuned accordingly to shunt the harmonics existing in the power supply system, so that the harmonics flow into the filter channel. Since the filtering effect is affected by the system impedance and filter capacitor bank parameters, reliable and accurate parameters and complex calculations and verifications are a reliable guarantee for the effective operation of the passive dynamic filter device.
Scope of application
Widely used in power systems, mining, cement, electrified railways, petrochemicals, metallurgy, shipbuilding, automobile manufacturing and other industries where load fluctuations are frequent, impact is strong, and harmonic content seriously exceeds standards.