Abstract: A method and apparatus for detecting power quality or disturbance events, such as voltage swells, sags or impulses, in power signals at remote locations of a power distribution system and for conveying information relating to the power disturbances to a central location. Voltage and/or current signals in electric power lines are monitored and converted to low level analog signals. The low level signals are processed by analog processing circuits or are digitally sampled and processed by digital processing circuits to detect power disturbances. Each power disturbance is characterized according to multiple parameters. The characterization information is encoded into a single signal. This is done by assigning a subset of a range of possible values of the signal to represent a parameter and then assigning a value within each subset of the range to represent another parameter.