This dataset presents an analysis of overvoltages on MV busbars in HV/MV substations, according to the classification table in NP EN 50160.
For each monitoring point, the following information is presented:
- Number of overvoltages in each cell of the table, for the indicated period, excluding exceptional events and high-impact incidents in the process of classification as exceptional events.
Number of overvoltages in each cell of the table, during the period of each exceptional event and high-impact incident in the process of classification as exceptional events.
Polyphase aggregation (IEC 61000-4-30) and a 3-minute time interval are considered.
The data are updated annually.
These data are the result of the application of successive biannual monitoring plans for a set of selected points in the distribution network. Point selection takes into account a balanced geographic distribution, as well as the identification of customers as being more susceptible to voltage quality variations, according to the RQS.
| Incremental Voltage u (%) | Duration t (ms) |
| 10 ≤ t ≤ 500 | 500 < t ≤ 5000 | 5000 < t ≤ 60000 |
| u ≥ 120 | Cell S1 | Cell S2 | Cell S3 |
| 120 > u > 110 | Cell T1 | Cell T2 | Cell T3 |
1. The information provided by E-REDES is an approximation of the values related to substations and the MV network as they are extracted from the systems and are based on the time the information was collected.
2. Given that connection points, the electricity distribution network, and consumption and production values themselves are naturally very dynamic, the information provided may be subject to subsequent changes and updates. It also reserves the right to exclude any omissions and/or occasional location inaccuracies that the information may contain.
3. The information provided by E-REDES is only an approximation of the available network capacity at any given time. Therefore, it does not constitute a contractual proposal, nor does it replace consultation with E-REDES for the purposes of formulating the usual grid connection requests (PLR).
4. E-REDES ensures that the information provided does not imply connection to any specific network point or asset, or even to a specific solution within the scope of the PLR that may be implemented. E-REDES reserves the right to evaluate the most appropriate technical solution on a case-by-case basis, based on the respective requests, in accordance with the principles to which it is legally bound.
5. E-REDES is not liable to third parties, including partners, service providers, contractors, users, and customers, for any damages that may arise directly or indirectly from the use of this Information, particularly when performing interventions, calculations, and/or estimates without confirming the accuracy and updating of the data. Therefore, it is duly noted that consulting this information does not prejudice the obligation to consult E-REDES directly for updated information.
6. The information provided is, for all legal purposes, the property of E-REDES and may not be copied, reproduced, adapted, modified, altered, deleted, destroyed, disseminated, transmitted, disclosed, or otherwise made available to third parties without express authorization from E-REDES. Reproduction, commercialization, or transfer to third parties, even free of charge, outside the specified terms or without express authorization from E-REDES, is prohibited under applicable law and may result in civil and criminal liability.
The data provided by the E-REDES Open Data Portal is covered by open licenses (CC BY 4.0). There are no restrictions on access, provided that data users acknowledge the publisher. Therefore, we suggest citing the E-REDES Open Data Portal as:
E-REDES – Electricity Distribution, "E-REDES Open Data Portal." Accessed under "Data." [Online] Available at https://e-redes.opendatasoft.com/pages/homepage/
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