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Improving Hosting Capacity of Rooftop PVs by Quadratic Control of an LV-Central BSS
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-6126-3598
KTH, Superseded Departments (pre-2005), Electrical Systems. KTH, Superseded Departments (pre-2005), Electric Power Systems. KTH, Superseded Departments (pre-2005), Energy Technology. KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-8189-2420
2017 (English)In: IEEE Transactions on Smart Grid, ISSN 1949-3053, E-ISSN 1949-3061, Vol. PP, no 99, p. 1-1Article in journal, News item (Refereed) Published
Abstract [en]

High integration of rooftop photovoltaic (PV) plants in distribution systems leads to new technical challenges: reverse-active power and voltage rise in low-voltage (LV) and medium-voltage (MV) grids. These challenges limit the maximum amount of power can be produced by PVs in LV and MV grids, called the hosting capacity (HC). Battery storage systems (BSSs) have been used in many studies to decrease the reverse power and improve the HC by controlling the active power. However, the influence of a central BSS on the HC can be greatly improved by using a quadratic power control, simultaneous active and reactive power control, and by selecting of the optimal battery size, the converter size, and the place of the central BSS. The effectiveness of the quadratic power control was not seen in previous works due to the fact that grids with one level of voltage without modeling of MV/LV transformers were simulated. This paper develops a method to select the optimal size of the battery and converter unit as well as the optimal place of an LV-central BSS having an optimal quadratic power control. The simulation results show considerable effects of the optimal selection of an LV-central BSS on the HC improvement.

Place, publisher, year, edition, pages
2017. Vol. PP, no 99, p. 1-1
Keywords [en]
Batteries;Mathematical model;Power control;Production;Reactive power;Reactive power control;Voltage control;Battery storage system;distribution grids;hosting capacity;reactive power control;renewable energy sources.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Energy Technology; Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-220984DOI: 10.1109/TSG.2017.2754943OAI: oai:DiVA.org:kth-220984DiVA, id: diva2:1179906
Note

QC 20180327

Available from: 2018-02-02 Created: 2018-02-02 Last updated: 2018-10-09Bibliographically approved

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Hasanpor Divshali, PoriaSöder, Lennart
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