Stabilization system power for a power system including a first computer for alternating generarcorriente at a predetermined frequency, which will be held by the power system, unsegundo energy-consuming equipment, and a system power supply that supplies power from I dedicho first computer to said second computer, said stabilization system energy system seproporciona to stabilize said power system including reducing disturbance of enrealidad frequency held by said power system from said predetermined frequency, said deestabilización system power system comprising: a system of rechargeable power (100) including a rechargeable battery (10) and an inverter having unconvertidor DA which converts DC power from said rechargeable battery in decorriente AC power and supply power AC said power system; caracterizadopormedios detection comprising: means for detecting voltage (51) for detecting a voltage of said power system; means for detecting current (52) for detecting a current of said power system; detection means voltage deviation (22) for detecting a deviation of the detected voltage porlos detection means voltage (51) to a predetermined voltage pordicho power system, ymedios deviation detection of reactive power (24) is made to receive the voltage detected by meansof voltage detection (51) and the current detected by said detecting means outlet (52) paradetectar a deviation of the actual value of the reactive power from the reactive power reference serllevado out by said system energy, means for detecting deviation of active energy (27) related to the voltage detected by said mediosde det ess voltage and current detected by said detecting means current to ladetección a deviation of the actual value of active power from the value of active energy establecidopreviamente, wherein: said detecting means includes means for detecting a deviation frequency (25) for detectaruna deviation of said frequency actually performed by said power system default dichafrecuencia to be held by said power system, and a unit delángulo phase detection (28) for detecting an angle phase voltage, control means comprising means for calculating (23) a required reactive power (RRP) of at least the voltage deviation detected by said deviation detection voltage (22) andthe deviation reactive power detected by said detection means energíareactiva deviation (24) and means for calculating (26) an active energy required (RAP) from at least the deviation on the frequency detected by said detecting means the frequency deviation (25) the deviation dela active energy detected by said detecting means deviation active energy (27) and ángulode phase (PA), said active and reactive energy required are the active and reactive energy respectively needed to stabilize said power system, ymedios control reactive power (23, 30, 31, 40) referred to reactive power required (RPR) calculated by said means for calculating a reactive power required for controlling a reactive deenergía output from said system rechargeable power supply; and control means energíaactiva (26, 30, 31, 40) refers to the active energy required (RAP) calculated by said paracalcular means an active power required to drive an output active power of said desuministro system rechargeable energy, wherein the calculation unit outputs the required reactive power (23) and the computation unit of the active energy required (26) are summed by a summer (29).
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