What is a dynamic reactive power compensation device
Dynamic reactive power compensation device, which is also known as static synchronous compensator, static var generator. Due to its switching device IGBT, so the effect of dynamic compensation is early synchronous condenser, capacitor and reactive power compensation device can not match, with its low harmonic, high efficiency, fast dynamic response, become important equipment in the modern flexible AC transmission system of non reactive power compensation device. The device is mainly used for power compensation in frequent fluctuations without power and inhibit the grid flicker and harmonics, improve the power factor of the power grid, improving efficiency and quality of power supply in distribution network, and reduce network losses and to prolong the service life of the transmission line. At present a variety of non reactive and harmonic compensation device, method for harmonics suppression and reactive power compensation are mainly two categories: a class is loaded assume that the harmonic reactive power compensation device; another kind is to power electronics equipment transformation, make it in the realization of its function and does not generate harmonic nor consume reactive power, or according to the need of the power factor correction. Information, please visit: lose distribution network equipment distribution network reactive power compensation and harmonic suppression device is successfully developed, and put into mass production, can bring great social benefits, at present in power distribution network of our country widespread reactive power compensation is insufficient, layout unreasonable, there is a urban and rural and regional grids capacitor capacity inversion phenomenon. 10KV voltage level above the distribution grid users and work demand, reasonable and effective use of no reactive compensation and harmonic control device and the distribution network of reactive power and harmonic compensation can not only achieve the purpose of saving energy and reducing consumption, but also can reduce the damage of the electric device and the accident caused by the harmonic. After the completion of the project, the company mass production of the product, for the community to save a lot of energy, to promote domestic equipment to replace imported equipment has played a positive role in bringing huge social benefits. An alternative approach to traditional compensating harmonic and reactive current is equipped with passive filter, usually by the power capacitor, inductor and resistor on parallel combination and, the method can harmonic compensation, and compensation of reactive power. Currently our country commonly used reactive power conditioning equipment is mechanical shunt reactors, switched capacitor, the stationary type pressure regulating means, because the adjustment is not continuous, slow response speed, it is difficult to meet the rapid changes in system operating mode of demand. And another surge of static var compensator (SVC), response speed is very fast, but due to a constant impedance characteristics, making in the low voltage to provide the required reactive power support, so deal with emergencies ability is weak, and in order to suppress the harmonics must be installed in the filter, covers an area is larger, in addition, the SVC device easily lead to oscillation system. In contrast, the novel reactive power compensator STATCOM is a more effective means for adjusting voltage, it without reactive current output can be constant in a large range of voltage change, in the low voltage can still provide strong reactive support, and from perceptual to the content of the full range of continuous adjustment.
| Datetime：2016.03.29 From： Views：