Delimiting unit, pipeline system and method for operating a pipeline system

A delimitation unit for a pipe section (24), comprising at least one protective component (46), a control unit (48) for controlling the protective component (46), and a communication unit (50) for communicating with a remote monitoring station (14),

• wherein the communication unit (50) is arranged to receive at least one control command from the monitoring station (14),
• wherein the control unit (48) is arranged to operate the protective components (46) in different operating modes to maintain the voltage of the pipe section (24) below at least one limit value, and to change the operating modes due to the control command received by the communication unit (50), and
• wherein the control unit (48) is arranged to determine measured values at a sampling rate being defined by the operating mode and to drive the at least one protective component (46) as a function of the measured value, and/or
• wherein at least one of the operating modes comprises a schedule in which different limit values and/or sampling rates are assigned to different times, and/or the at least one control command comprises at least part of a schedule, and/or
• wherein the control unit (48) is arranged to operate the protective components (46) in at least three conditions.