METHOD AND APPARATUS FOR PROTECTING PUMP UNITS FROM CYBER ATTACKS

The invention relates to a method for protecting a pump unit comprising a variable-speed fluid-conveying device (2), particularly a centrifugal pump, a drive and a control system, in the event of cyber attacks. According to said method, signals relating to the speed and/or speed regulation of the fluid-conveying device (2) are first detected. The signals are then evaluated in order to detect a maliciously effected, anomalous operation of the pump unit (cyber attack). At least one nominal variable and at least one actual variable derived from the analyzed signal are then compared. Subsequently,a unit (9) transmits signals to components of the pump unit in order to effect the operation of the fluid-conveying device (2) in conformity with the rules and to generate a state in which the fluid-conveying device (2) is protected from current and/or other cyber attacks. 本发明涉及一种用于在网络攻击时保护泵总成的方法，该泵总成包括经转速调节的流体输送装置（2）、特别是离心泵、驱动器和控制机构。在所述方法中，首先检测涉及流体输送装置（2）的转速和/或转速调节的信号。然后测评信号，以便探测泵总成的故意引起的违规的运行（网络攻击）。在此将至少一个额定参量与至少一个从所分析