TY - GEN
T1 - Research on STATCOM DC side capacitor voltage stratified control strategy
AU - Ma, Daoyuan
AU - Ji, Yanchao
AU - Wang, Jianze
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12
Y1 - 2018/12
N2 - The Static Synchronous Compensator (STATCOM) has the advantages of fast response, small footprint, and high compensation accuracy in reactive power compensation and it is widely used in low voltage distribution networks. This paper mainly studies the DC-side capacitor voltage control. For the DC side capacitor voltage control, a layered control strategy is applied in this paper. The first layer control is the overall DC side capacitor voltage control, and the second layer control is the phase-to-phase DC side voltage equalization control. In the overall DC-side voltage control, the second-harmonic pollution caused by the second-harmonic component is suppressed by adding filter links in the feedback channel. This control strategy only exchange the positive sequence active components in the power grid and will not cause pollution to the grid. For the phase-to-phase DC-side voltage equalization control, this paper proposes a voltage equalization control method based on zero-sequence injection voltage. The zero-sequence voltage components is also discussed, which need to be injected when the grid voltage is balanced and unbalanced. The layered control strategy proposed in this paper will not inject negative sequence and harmonic components into the grid and avoid pollution to the grid during the compensation process.
AB - The Static Synchronous Compensator (STATCOM) has the advantages of fast response, small footprint, and high compensation accuracy in reactive power compensation and it is widely used in low voltage distribution networks. This paper mainly studies the DC-side capacitor voltage control. For the DC side capacitor voltage control, a layered control strategy is applied in this paper. The first layer control is the overall DC side capacitor voltage control, and the second layer control is the phase-to-phase DC side voltage equalization control. In the overall DC-side voltage control, the second-harmonic pollution caused by the second-harmonic component is suppressed by adding filter links in the feedback channel. This control strategy only exchange the positive sequence active components in the power grid and will not cause pollution to the grid. For the phase-to-phase DC-side voltage equalization control, this paper proposes a voltage equalization control method based on zero-sequence injection voltage. The zero-sequence voltage components is also discussed, which need to be injected when the grid voltage is balanced and unbalanced. The layered control strategy proposed in this paper will not inject negative sequence and harmonic components into the grid and avoid pollution to the grid during the compensation process.
KW - Capacitor voltage stratified control strategy
KW - Injection of zero sequence voltage
KW - STATCOM
KW - Suppression of double-frequency fluctuation
UR - https://www.scopus.com/pages/publications/85068381054
U2 - 10.1109/ITOEC.2018.8740654
DO - 10.1109/ITOEC.2018.8740654
M3 - 会议稿件
AN - SCOPUS:85068381054
T3 - Proceedings of 2018 IEEE 4th Information Technology and Mechatronics Engineering Conference, ITOEC 2018
SP - 1345
EP - 1352
BT - Proceedings of 2018 IEEE 4th Information Technology and Mechatronics Engineering Conference, ITOEC 2018
A2 - Xu, Bing
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2018
Y2 - 14 December 2018 through 16 December 2018
ER -