AC REACTIVE POWER COMPENSATION SYSTEM

摘要

The invention pertains to electrical engineering, particularly to the fast-operating systems of AC reactive power compensation. Its aim is to improve the functional parameters of AC reactive power compensation system provided with non-regulated capacitors' banks and regulated reactors. The target is reached by the system of an inductive reactive load compensation comprising the non-regulated three-phase capacitors' banks, as well as the control system of regulated three-phase reactors scheme. In series with aforementioned reactors the electronic line switches are introduced in each phase but in parallel to the reactors are introduced the by-passing electronic switches. The control lines of the switches are connected respectively to output of comparator, which compares saw-tooth like inclining edge voltage generated by high-frequency generator with a control signal that depends on the ratio of reactive power of load to the maximum possible one of load, as well as are connected to the output of an inverting element. The measuring unit of reactive power and adjusting potentiometer are connected with opposite polarities to the input of proportional regulator wherein its output is connected to the non-inverting input of said comparator for measuring the said ratio of reactive power, besides its inverting input is connected to an output of the above mentioned saw-tooth like voltage generator.