TY - JOUR
T1 - Improving PV Dynamic Hosting Capacity Using Adaptive Controller for STATCOMs
AU - Astero, Poria
AU - Söder, Lennart
N1 - 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:,poria.astero@aalto.fi).
Publisher Copyright:
© 1986-2012 IEEE.
PY - 2019/3
Y1 - 2019/3
N2 - 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.
AB - 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.
KW - Distribution grids
KW - dynamic voltage regulation
KW - ESPOO
KW - reactive power
KW - renewable energy sources (RESs)
UR - http://www.scopus.com/inward/record.url?scp=85054469916&partnerID=8YFLogxK
U2 - 10.1109/TEC.2018.2873057
DO - 10.1109/TEC.2018.2873057
M3 - Article
AN - SCOPUS:85054469916
SN - 0885-8969
VL - 34
SP - 415
EP - 425
JO - IEEE Transactions on Energy Conversion
JF - IEEE Transactions on Energy Conversion
IS - 1
M1 - 8481391
ER -
