METHOD FOR ACTIVE CONTROL OF FREQUENCY AND VOLTAGE IN A POWER SUPPLY GRID WITH DECENTRALIZED POWER SUPPLY SYSTEMS

摘要

The invention relates to a method for actively controlling in a feedback control at least one output parameter (f i , V i , P i , Q i ) of a decentralized power generating unit (1) feeding power into a power supply grid (14) having a plurality of such decentralized power generating units, the power generating unit (1) being coupled to the grid (14) at a grid tied point (16). The actual resistance (R i ), reactance (X i ) and magnitude (|Z i |) of the impedance (Zeta i ) of the power generating unit (1) at the tied point (16) is determined and a first quotient (R i /|Z i |) between the resistance (R i ) and impedance magnitude (|Z i |) and a second quotient (Chi i i /|Zeta i |) between the reactance (X i ) and the impedance magnitude (|Z i |) is calculated. These quotients (R i /|Z i |, X i /|Z i |) are used for the feedback control of the at least one output parameter (f i , V i , P i , Q i ).