1.Safely improve power factor, avoid power factor’s examination penalty from power supply department;
2. Save energy and reduce consumption, reduce operation cost
3. Reduce damage from harmonic to electric device, secure the steady operation of distribution device and reactive power compensation device
4. Increase the using efficiency of system capacitance and distribution device
Main electric devices of chemical industry are: various pump, Centrifuge, mixer, fan, air compressor, lighting device, some has electric tank, the configuration of device varies from the different products.
1．Various pump, centrifuge, mixer, fan, air compressor and other motors usually use six impulse inverter to drag, for this, it will produce lots of 5,7, 9times harmonic, and consumes much reactive power.
2. Sit lighting usually use mercury arc lamp or sodium lamp, mercury arc lamp or sodium lamp, high voltage rectifier not only produce 3, 5,7 times harmonic, and consumes much reactive power. Therefore, at the time of harmonic control, should also conduct reactive power compensation.
3. Electric tank, the DC power needed for the electrolytic tank is realized by a three-phase rectifier bridge. Three-phase rectifier bridge will produce lots of 5,7, 9 times harmonic.
Main electric devices of chemical industry are: various pump, Centrifuge, mixer, fan, air compressor, lighting device, some has electric tank, the configuration of device varies from the different products.
1．Various pump, centrifuge, mixer, fan, air compressor and other motors usually use six impulse inverter to drag, for this, it will produce lots of 5,7, 9times harmonic, and consumes much reactive power.
2. Sit lighting usually use mercury arc lamp or sodium lamp, mercury arc lamp or sodium lamp, high voltage rectifier not only produce 3, 5,7 times harmonic, and consumes much reactive power. Therefore, at the time of harmonic control, should also conduct reactive power compensation.
3. Electric tank, the DC power needed for the electrolytic tank is realized by a three-phase rectifier bridge. Three-phase rectifier bridge will produce lots of 5,7, 9 times harmonic.
Suggestion is to use fast filter compensation+ active filter to concentrate on local harmonic control and reactive power compensation:
1.Use fast filter compensation device on various pump, centrifuge, mixer, fan, air compressor and lighting device to conduct reactive power compensation and harmonic control
2.As the power factor of rectifier device is high, no need to compensate the reactive power. Only use active filter to conduct local harmonic control.