TY - GEN
T1 - Research on DVR Compensation Limit Considering the Influence of Power Distribution System Parameters
AU - Liu, Yuanhao
AU - Zhao, Yuehang
AU - Li, Yuguo
AU - Yi, Hao
AU - Zhuo, Fang
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - There is compensation limit for the series-and -shunt connected dynamic voltage restorer (DVR), which cannot fully compensate all voltage sag cases. To deeply discuss this problem, this paper establishes a voltage divider model for a voltage sag for 10kV power distribution system, and the Thevenin equivalent circuit and mathematical expression of the model are derived and analyzed before and after voltage sag. The relationship between DVR compensation capacity and power distribution system parameters is shown, and the principle for voltage sag compensation is revealed through the volt-ampere characteristic curve. It is pointed out that whether the sag voltage can be fully compensated by DVR or not depends on the intersection between source volt-ampere characteristic curve and load rated power curve. Then the maximum output power of equivalent source and corresponding DVR compensation limit are derived by mathematical methods. Finally, the correctness of the above theory is verified by simulation analysis.
AB - There is compensation limit for the series-and -shunt connected dynamic voltage restorer (DVR), which cannot fully compensate all voltage sag cases. To deeply discuss this problem, this paper establishes a voltage divider model for a voltage sag for 10kV power distribution system, and the Thevenin equivalent circuit and mathematical expression of the model are derived and analyzed before and after voltage sag. The relationship between DVR compensation capacity and power distribution system parameters is shown, and the principle for voltage sag compensation is revealed through the volt-ampere characteristic curve. It is pointed out that whether the sag voltage can be fully compensated by DVR or not depends on the intersection between source volt-ampere characteristic curve and load rated power curve. Then the maximum output power of equivalent source and corresponding DVR compensation limit are derived by mathematical methods. Finally, the correctness of the above theory is verified by simulation analysis.
KW - DVR
KW - compensation limit
KW - power distribution system parameters
KW - volt-ampere characteristic curve
KW - voltage sag
UR - https://www.scopus.com/pages/publications/85141897643
U2 - 10.1109/CICED56215.2022.9929142
DO - 10.1109/CICED56215.2022.9929142
M3 - 会议稿件
AN - SCOPUS:85141897643
T3 - China International Conference on Electricity Distribution, CICED
SP - 1052
EP - 1056
BT - Proceedings - 10th China International Conference on Electricity Distribution
PB - IEEE Computer Society
T2 - 10th China International Conference on Electricity Distribution, CICED 2022
Y2 - 7 September 2022 through 8 September 2022
ER -