The present paper describes and compares different voltage dip representations aiming to characterize the voltage dip severity in terms of duration, depth and time interval around the residual rms-voltage. With this objective, a set of real disturbances collected in Spanish PV power plants along different field-measurement campaigns have been selected and characterized by means of different approaches: (i) rms-voltage values, (ii) scatter-plot distribution and (iii) dq0 transformation. Results and examples regarding the collected disturbances are also included in the paper, as well as a comparison with current Grid-Code requirements for renewable energy resources connected to the grid under the presence of disturbances.