Method and apparatus for operating a converter in a converter-based power distribution system, and power distribution system having a plurality of converter-based power transmission units

The invention relates to a method for operating a converter (2) in a power distribution system (1), wherein the converter (2) supplies electric power provided by a source to an AC system (3) at a coupling point (E) or draws electric power from the AC system (3) at the coupling point (E), wherein the AC system (3) is coupled to further converters for supplying or drawing electric power, wherein the converter (2) has an inverter (23) that is provided with power switches in order to provide an electrical variable, comprising the following steps: - provision of one or more system state variables that indicate a system state of the system (3); - selection of one of a plurality of commutation patterns on the basis of the one or more system state variables; and - actuation of the inverter (23) in accordance with the selected commutation pattern. 本发明涉及在配电系统(1)中运行变换器(2)的方法，通过变换器(2)将某个源提供的电能在耦合点(E)馈入到交流电网(3)之中，或者在耦合点(E)从交流电网(3)取得电能，所述交流电网(3)与用来馈入或者获取电能的其它变换器相连，所述变换器(2)具有配备了功率开关的逆变器(23)，以便提供电气量，所述方法包括以下步骤：?提供一个或多个表明电网(3