Electromagnetic network voltage regulation and smart grid application

摘要

The present invention describes a device (10) and a method for providing a regulated mains voltage (ur) in particular in 400v local network with excess voltages of up to 20%. The apparatus (10) uses an electromagnetic control coil (23) on a control magnet core (43) and thus controls the complex voltage drop of power coils (11, 12), by means of which the alternating current flows to be regulated, whereby the magnetic circuit of the power coils (11, 12) with the control magnet core (43) flows and the premagnetization of the control magnet core (43) in the sense of the control is varied. Hence, in a surprisingly simple and reliable manner, a secure network voltage regulation on an electromagnetic basis without sensitive and expensive electronic power semiconductors. The network voltage regulation is used, in particular, in order to compensate for or mains voltage fluctuations, in a targeted manner in the sense of a smart grid control to adjust a suitable local network voltage.