Abstract
| Original language | English |
|---|---|
| Journal | I E E E Transactions on Industrial Informatics |
| Volume | 13 |
| Issue number | 1 |
| Pages (from-to) | 270 - 277 |
| ISSN | 1551-3203 |
| DOIs | |
| Publication status | Published - 2016 |
Bibliographical note
(c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other worksKeywords
- Low Voltage Grid
- Active transformer
- High PV penetration
- Voltage control
- Reactive power management
Cite this
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Efficient Control of Active Transformers for Increasing the PV Hosting Capacity of LV Grids. / Hashemi Toghroljerdi, Seyedmostafa; Østergaard, Jacob; Degner, Thomas; Brandl, Ron; Heckmann, Wolfram.
In: I E E E Transactions on Industrial Informatics, Vol. 13, No. 1, 2016, p. 270 - 277.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Efficient Control of Active Transformers for Increasing the PV Hosting Capacity of LV Grids
AU - Hashemi Toghroljerdi, Seyedmostafa
AU - Østergaard, Jacob
AU - Degner, Thomas
AU - Brandl, Ron
AU - Heckmann, Wolfram
N1 - (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works
PY - 2016
Y1 - 2016
N2 - The increased penetration of grid-connected photovoltaic (PV) systems in low voltage (LV) grids creates concerns about overvoltage in these grids. The proposed methods to prevent overvoltage, such as reactive power absorption by PV inverters and active power management of customers, focus on decreasing the voltage rise along LV feeders, and the potential of active medium voltage to low voltage (MV/LV) transformers for overvoltage prevention has not been thoroughly investigated. This paper presents the application of active MV/LV transformers for increasing the PV hosting capacity of LV grids. The potential interferences between the operation of active transformers and the reactive power absorption by PV inverters are investigated, and a voltage droop control approach is proposed for the efficient control of these transformers during high PV generation periods. The proposed method can potentially increase the PV hosting capacity of the grid, while eliminating the need for a complex and centralized controller. The voltages of specific locations or the grid state estimations provide adequate data for adjustments of the droop parameters. The simulations and field test results associated with the implementation of the proposed method to a newly developed active LV grid with high PV penetration in Felsberg, Germany, confirm the efficiency of the proposed method.
AB - The increased penetration of grid-connected photovoltaic (PV) systems in low voltage (LV) grids creates concerns about overvoltage in these grids. The proposed methods to prevent overvoltage, such as reactive power absorption by PV inverters and active power management of customers, focus on decreasing the voltage rise along LV feeders, and the potential of active medium voltage to low voltage (MV/LV) transformers for overvoltage prevention has not been thoroughly investigated. This paper presents the application of active MV/LV transformers for increasing the PV hosting capacity of LV grids. The potential interferences between the operation of active transformers and the reactive power absorption by PV inverters are investigated, and a voltage droop control approach is proposed for the efficient control of these transformers during high PV generation periods. The proposed method can potentially increase the PV hosting capacity of the grid, while eliminating the need for a complex and centralized controller. The voltages of specific locations or the grid state estimations provide adequate data for adjustments of the droop parameters. The simulations and field test results associated with the implementation of the proposed method to a newly developed active LV grid with high PV penetration in Felsberg, Germany, confirm the efficiency of the proposed method.
KW - Low Voltage Grid
KW - Active transformer
KW - High PV penetration
KW - Voltage control
KW - Reactive power management
U2 - 10.1109/TII.2016.2619065
DO - 10.1109/TII.2016.2619065
M3 - Journal article
VL - 13
SP - 270
EP - 277
JO - I E E E Transactions on Industrial Informatics
JF - I E E E Transactions on Industrial Informatics
SN - 1551-3203
IS - 1
ER -