METHOD AND DEVICE FOR REGULATING A VOLTAGE IN A DISTRIBUTION NETWORK

摘要

The invention relates to a method for regulating a voltage (U) in a distribution network (VN) that supplies nodes (KN) with voltage via mains power lines (NL). In said method, a node (KN), which recognizes that the local voltage of the distribution network (VN) present at said node lies above or below a permissible supply voltage range, switches from slave mode (SB) to master mode (MB) and in said master mode (MB) regulates the local voltage (U) that is present, by drawing or supplying reactive power (Q) in order to reach the permissible supply voltage range. The node (KN) then indicates this to other nodes (KN) of the distribution network (VN) that are in slave mode (SB) by modulating an indication signal pattern (ASM) onto the reactive power (Q) being drawn or supplied by said node, the signal pattern having a signal parameter which is proportional to the amplitude of the reactive power (Q) that is drawn or supplied by said node (KN).