Year: 2025
Type: conference-paper
Abstract: In the future, large amount of flexibility is needed from different voltage levels to fulfill the flexibility needs of the transmission and distribution system operators (TSOs and DSOs) in increasingly renewables-based power systems. This paper develops further the TSO-DSO coordinated, frequency-dependent distributed energy resources’ (DERs’) and on-load-tap-changers’ (OLTCs’) control scheme for the future electricity distribution networks to enable prioritized flexibility services provision for the TSOs and DSOs by proposing dynamic adaptive and frequency-dependent current/thermal limits utilization for distribution network lines, cables and transformers as part of the overall scheme. In addition, the paper focuses on comparison of tan(phi)=-0.35 as reactive power (Q) control method for solar photovoltaics (PVs), tan(phi)=-0.35 (discharging) / 0.4 (charging) for battery energy storages and tan(phi)=0.4 for electric vehicle (EV) chargers instead of previously proposed frequency-dependentQ-control principles for DERs. Also the effect of more rapid PV active power (P) fluctuations as well as further modified active power-frequency droop (Pf-droop) settings in MV BESS’s multi-use cases with PV and EV are studied by PSCAD simulations.
Source: IET conference proceedings.
Authors: Hannu Laaksonen, Nikos Hatziargyriou
Institutions: University of Vaasa, National Technical University of Athens
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: Business Finland
OpenAlex ID: W4415168677