Mitigating high PV penetration-induced low-voltage grid overvoltage while stimulating the energy transition through a generalised approach

Master thesis (2021)

Authors

D.J.G. van Hasselt Architecture and the Built Environment

Contributors

T.W. Fens Economics of Technology and Innovation - TPM (supervisor 1)
E. van der Roest Sanitary Engineering - CEG (supervisor 1)
Faculty
Architecture and the Built Environment
Copyright: © 2021 Diederik van Hasselt
Energy Storage Energy Transition System integration Energy system design Overvoltage protection Urban Energy Transition Overvoltage mitigation Low voltage grid TENOMF
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Published Date

15-12-2021

Language

English

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Faculty

Architecture and the Built Environment

Abstract

This research describes a generic step-by-step approach that can be used to depict energy transition-enhancing overvoltage mitigation strategies that fit the local context of a neighbourhood. Although high PV induced low-voltage grid overvoltage mitigation has been studied extensively, this research adds onto existing literature in three ways. It is the first generic approach to develop neighbourhood overvoltage mitigation strategies. Moreover, it considers spatial and socio-economic aspects. Lastly, it regards system integration and wider energy transition ambitions.
The 6 steps of the transition-enhancing overvoltage mitigation framework (TENOMF) are described. Subsequently, the TENOMF is demonstrated on a case study in the Diamantbuurt in Amsterdam.
The results of the case study show that conventional mitigation strategies are very effective in overvoltage mitigation, however, they lack in wider energy transition ambitions. In consideration of local energy transition plans, hydrogen conversion shows to be very effective financially and energetically. In combination with high electrification, home batteries prove to be effective in system integration. The final decision-making should be done with the involvement of local stakeholders. For the social acceptance of a strategy, co-ownership, local benefits and involvement in the planning process are of great importance.
With the TENOMF, strategies mitigating PV induced overvoltage in the LV grid can be chosen that fit the local context of a neighbourhood. By using system integration, the TENOMF matches overvoltage mitigation strategies with energy transition ambitions. Therefore, using the TENOMF, overvoltage mitigation can be seen as an opportunity as it helps catalysing the energy transition as a whole.
Largest limitations were caused by the used PtX model for the energetic assessment. It is recommended to improve PtX’s overvoltage modelling by using a higher time-granularity and by considering fundamental electrotechnical principles.