AC REACTIVE POWER COMPENSATION SYSTEM

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 targ...

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Hauptverfasser: RA IS IVARS, VASI EVI S O EGS
Format: Patent
Sprache:eng ; lav
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Beschreibung
Zusammenfassung: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. Izgudrojums attiecas uz elektrotehniku, konkrēti - uz maiņstrāvas sistēmu reaktīvās jaudas kompensācijas ātrdarbīgām iekārtām. Tā mērķis ir uzlabot maiņsprieguma reaktīvās jaudas kompensācijas sistēmas ar neregulējamiem kondensatoriem un regulējamiem reaktoriem funkcionālos parametrus. Mērķis ir sasniegts tādējādi, ka induktīvās reaktīvās slodzes kompensācijas sistēma sastāv no trīsfāžu maiņsprieguma tīklam pieslēgtu neregulējamu kondensatoru trīsfāžu baterijas, kā arī no ar vadības sistēmu aprīkota regulējamu trīsfāžu reaktoru slēguma, no virknē ar minētajiem reaktoriem, kas tīklam pieslēgti caur trīsfāžu augstfrekvences droseļu-kondensatoru filtru, katrā fāzē ieslēgtiem līnijas elektroniskiem slēdžiem un paralēli katram reaktoram ieslēgtiem šuntējošiem elektroniskiem slēdžiem. Šo slēdžu grupu vadības līnijas attiecīgi ir pieslēgtas pie komparatora izejas, kas salīdzina periodiska augoša zāģsprieguma lielumu, ko ar augstu frekvenci ģenerē attiecīgs ģenerators, ar vadības signāla lielumu, kas ir atkarīgs no slodzes reaktīvās jaudas attiecības pret slodzes maksimālo reaktīvo