TY - GEN
T1 - A seamless transfer strategy based on special master and slave DGs
AU - Meng, Xin
AU - Liu, Zeng
AU - Liu, Jinjun
AU - Wu, Teng
AU - Wang, Shike
AU - Liu, Baojin
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/25
Y1 - 2017/7/25
N2 - In the case of sensitive and critical load, the distributed generation (DG) should supply continuous power, even in the condition of utility outage. This paper proposes a novel seamless transfer control strategy, which based on special master and slave DGs. The master DG unit is controlled by a novel control strategy, which combines indirect current control and droop control. A part of slave DGs are controlled as conventional current sources based on PQ control, which are named as Slave-Type1. Another part of slave DGs are controlled based on PQ control and droop control, which are named as Slave-Type2. When the islanding is confirmed, the control block of Slave-Type2 DGs will transfer from PQ control to droop control. The advantages of this proposed strategy and microgrid structure are as follows. Firstly, the quality of critical load voltage can be maintained when utility outage occurs, Secondly, the reliability of microgrid in islanding mode can be improved because of the existence of multiple master DGs. The simulation results are provided to verify the effectiveness of this proposed control method.
AB - In the case of sensitive and critical load, the distributed generation (DG) should supply continuous power, even in the condition of utility outage. This paper proposes a novel seamless transfer control strategy, which based on special master and slave DGs. The master DG unit is controlled by a novel control strategy, which combines indirect current control and droop control. A part of slave DGs are controlled as conventional current sources based on PQ control, which are named as Slave-Type1. Another part of slave DGs are controlled based on PQ control and droop control, which are named as Slave-Type2. When the islanding is confirmed, the control block of Slave-Type2 DGs will transfer from PQ control to droop control. The advantages of this proposed strategy and microgrid structure are as follows. Firstly, the quality of critical load voltage can be maintained when utility outage occurs, Secondly, the reliability of microgrid in islanding mode can be improved because of the existence of multiple master DGs. The simulation results are provided to verify the effectiveness of this proposed control method.
KW - PQ control
KW - droop control
KW - grid-connected mode
KW - indirect current control
KW - islanding mode
KW - seamless transfer
UR - https://www.scopus.com/pages/publications/85034059771
U2 - 10.1109/IFEEC.2017.7992277
DO - 10.1109/IFEEC.2017.7992277
M3 - 会议稿件
AN - SCOPUS:85034059771
T3 - 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
SP - 1553
EP - 1558
BT - 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
Y2 - 3 June 2017 through 7 June 2017
ER -