Voltage Control Approach from SolarPhotovoltaics with Battery Energy StorageSystem in Low Voltage Distribution Grid
Author
Sørensen, Dominique Alonso
Term
4. term
Education
Publication year
2018
Submitted on
2018-09-30
Pages
89
Abstract
High penetration of rooftop solar in low-voltage distribution grids can cause over-voltage and operational challenges. This thesis investigates voltage regulation under high PV penetration using inverter-based reactive power support (fixed power factor and Volt/VAR control), active power curtailment, and a battery energy storage system (BESS). A low-voltage benchmark feeder is selected, and PV and load profiles, including 24-hour scenarios, are developed to perform steady-state assessments and time-series simulations. The methods are evaluated for their impact on voltage profiles, reactive power compensation, system and line loading, and transformer power flow. The BESS is used to absorb excess PV generation and supply power during high demand to support voltage control. Results for the different strategies are presented and compared in the thesis; specific quantitative outcomes are not provided in this excerpt.
Høj udbredelse af solcelleanlæg i lavspændings-distributionsnet kan forårsage over-spændinger og driftsmæssige udfordringer. Denne afhandling undersøger, hvordan spændingen kan reguleres ved høj PV-indtrængning ved hjælp af inverterbaseret reaktiv effektstøtte (fast effektfaktor og Volt/VAr-kontrol), aktiv effekt-nedregulering samt et batterienergilagringssystem (BESS). Et lavspændings benchmark-net vælges, og der opbygges PV- og lastprofiler, herunder 24-timers scenarier, for at gennemføre stationære analyser og tidsseriebaserede simuleringer. Metoderne vurderes ud fra deres indvirkning på spændingsprofiler, reaktiv effektkompensation, system- og linjebelastninger samt transformerens effektflow. BESS anvendes til at absorbere overskydende PV-produktion og levere effekt ved høj belastning for at understøtte spændingsregulering. Resultaterne for de enkelte metoder præsenteres og sammenlignes i afhandlingen; dette uddrag indeholder ikke specifikke kvantitative konklusioner.
[This apstract has been generated with the help of AI directly from the project full text]
Keywords