Method and supervisory control device for monitoring an installation

A method of monitoring an installation having a network topology, the method comprising:

• acquiring at a plurality of measuring points of the installation, measured values characterizing a state of the installation at the respective measuring point;
• obtaining, based on the measured values, state values that indicate a state at prescribed state observation points of the installation, wherein a number of the prescribed state observation points of the installation is larger than a number of the plurality of measuring points of the installation;
• providing state threshold values for at least selected instances of the state observation points, the state threshold values delimiting an admissible operating area for the installation and the respective state observation point;
• comparing the state values ascertained for the selected state observation points with the associated state threshold values;
• producing a graphical representation exclusively for those state values for which a violation of the associated state threshold value has already taken place or is imminent;
• generating the graphical representation with a circular or elliptical base area having a diameter dependent on a magnitude of the respective state value in comparison with the associated state threshold value;
• producing a visual display of a network topology of the installation and displaying same on a display device;
• assigning to at least the state values for which a graphical representation is produced a respective item of location information indicating a position of their respective state observation point in the installation;
• displaying the respective graphical representation, using the location information, at that respective point of the displayed network topology that corresponds to a position thereof in the installation;
• and
• correcting the violation of the associated state threshold value.