Abstract: In a visual display of power transmission quality, at least three display regions are displayed. The display regions are a time-related, a location-related and a control-related display region. The time-related display region enables a selection of the time interval on the part of the user that is to be examined for a violation of one or more predetermined power quality rules.

Abstract: In a visual display of power transmission quality, at least three display regions are displayed. The display regions are a time-related, a location-related and a control-related display region. The time-related display region enables a selection of the time interval on the part of the user that is to be examined for a violation of one or more predetermined power quality rules.

Abstract: To carry out monitoring of the electrical energy quality of an electrical energy supply system using an electrical power quality field device with comparatively little complexity, a method performs the steps of: detecting a first measured value of a first power quality characteristic by a measuring device of a power quality field device arranged at a measurement point of the electrical energy supply system at a first measurement time; detecting a second measured value of the first power quality characteristic by the measuring device at a second measurement time, which directly follows the first measurement time; comparing the first and second measured values with at least one predetermined threshold value; and generating an event signal, which indicates a violation of the threshold value, precisely when one of the two measured values is above and one of the two measured values is below the threshold value.

Abstract: A method for controlling the quality of the electrical energy of an electrical power supply system, which allows the quality of the electrical energy to be controlled so as to correspond largely to the required threshold values. The method comprises the following steps: a first test curve of measured values of a parameter which indicates the quality of the electrical energy of the power supply system is detected during a first observation period; a first pattern recognition is performed regarding the first test curve in order to generate a user profile which indicates expected time-related deviations of the parameter from a predefined setpoint range for at least one future observation period based of patterns recognized in the first test curve; and measures that stabilize the quality of the electrical energy are taken for the times of the future observation period during which a deviation of the parameter from the setpoint range is expected to occur according to the user profile.