Improving PV Dynamic Hosting Capacity Using Adaptive Controller for STATCOMs

Poria Astero; Lennart Söder

doi:10.1109/TEC.2018.2873057

Improving PV Dynamic Hosting Capacity Using Adaptive Controller for STATCOMs

Poria Astero^*
, Lennart Söder

^*Corresponding author for this work

Not published at Aalto University

KTH Royal Institute of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

50 Citations (Scopus)

Abstract

High penetrations of renewable energy sources (RES) in distribution grids lead to new challenges in voltage regulation. These challenges are not just limited to the steady-state voltage rise, but they are extended to rapid voltage changes due to wind speed variations and moving clouds, casting shadows on photovoltaic panels. According to EN50160 in low-voltage (LV) grids, the steady-state voltage should not exceed 1.1 pu (static characteristic), and rapid voltage changes should be kept less than 0.05 pu (dynamic characteristic). These two characteristics may limit the maximum amount of RES that can be installed in LV grids, called, respectively, the static hosting capacity (SHC) and dynamic hosting capacity (DHC). Although existing research just evaluated SHC in distribution grids, high-penetrated RES grids can be faced with such large voltage changes, which cause a smaller DHC than the SHC. This paper studies both SHC and DHC in distribution grids and proposes an adaptive controller for static synchronous compensators to regulate the steady-state and dynamic voltage while avoiding the unnecessary increase in the reactive power. The simulation results in some German distribution grids show considerable effects of the proposed adaptive controller on improving both SHC and DHC.

Original language	English
Article number	8481391
Pages (from-to)	415-425
Number of pages	11
Journal	IEEE Transactions on Energy Conversion
Volume	34
Issue number	1
DOIs	https://doi.org/10.1109/TEC.2018.2873057
Publication status	Published - Mar 2019
MoE publication type	A1 Journal article-refereed

Funding

Manuscript received March 15, 2018; revised July 19, 2018 and September 20, 2018; accepted September 27, 2018. Date of publication October 3, 2018; date of current version February 26, 2019. This work was supported by the Swedish Energy Agency through the Solar-ERA.NET project. Paper no. TEC-00248-2018. (Corresponding author: Poria Hasanpor Divshali.) P. H. Divshali is with the KTH Royal Institute of Technology114 28 Stockholm, Sweden, and also with the VTT Technical Research Center of Finland, 1000 Espoo, Finland (e-mail:,[email protected]).

Keywords

Distribution grids
dynamic voltage regulation
ESPOO
reactive power
renewable energy sources (RESs)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/TEC.2018.2873057

Cite this

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title = "Improving PV Dynamic Hosting Capacity Using Adaptive Controller for STATCOMs",

abstract = "High penetrations of renewable energy sources (RES) in distribution grids lead to new challenges in voltage regulation. These challenges are not just limited to the steady-state voltage rise, but they are extended to rapid voltage changes due to wind speed variations and moving clouds, casting shadows on photovoltaic panels. According to EN50160 in low-voltage (LV) grids, the steady-state voltage should not exceed 1.1 pu (static characteristic), and rapid voltage changes should be kept less than 0.05 pu (dynamic characteristic). These two characteristics may limit the maximum amount of RES that can be installed in LV grids, called, respectively, the static hosting capacity (SHC) and dynamic hosting capacity (DHC). Although existing research just evaluated SHC in distribution grids, high-penetrated RES grids can be faced with such large voltage changes, which cause a smaller DHC than the SHC. This paper studies both SHC and DHC in distribution grids and proposes an adaptive controller for static synchronous compensators to regulate the steady-state and dynamic voltage while avoiding the unnecessary increase in the reactive power. The simulation results in some German distribution grids show considerable effects of the proposed adaptive controller on improving both SHC and DHC.",

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note = "Funding Information: Manuscript received March 15, 2018; revised July 19, 2018 and September 20, 2018; accepted September 27, 2018. Date of publication October 3, 2018; date of current version February 26, 2019. This work was supported by the Swedish Energy Agency through the Solar-ERA.NET project. Paper no. TEC-00248-2018. (Corresponding author: Poria Astero.) P. Astero is with the KTH Royal Institute of Technology114 28 Stockholm, Sweden, and also with the VTT Technical Research Center of Finland, 1000 Espoo, Finland (e-mail:,[email protected]). Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

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Improving PV Dynamic Hosting Capacity Using Adaptive Controller for STATCOMs

Abstract

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Keywords

UN SDGs

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